ST STTS751 User Manual

2.25 V low-voltage local digital temperature sensor

Features

■ Operating voltage 2.25 V to 3.6 V

■ Operating temperature –40 °C to +125 °C

■ Programmable

– 10 different conversion rates

0.0625 to 32 conversions/sec.
1 conversion/sec. - default

– 4 different resolutions

9-bit (0.5 °C/LSB) to12-bit (0.0625 °C/LSB)
10-bit (0.25 °C/LSB) - default

■ Low supply current

– 50 µA (typ) for 8 conversions/sec.
– 20 µA (typ) for 1 conversion/sec.
– 3 µA (typ) standby

■ Accuracy

– ±1.0 °C (typ) 0 °C to +85 °C
– ±2.0 °C (typ) –40 °C to +125 °C

■ One-shot mode for power saving

■ Fast conversion time 21 ms (typ) 10-bit

■ Pull-up resistor value allows single pin to select

one of four slave addresses

■ Supports 400 kHz serial clock

Table 1. Device summary

STTS751

UDFN-6L

SOT23-6L

■ SMBus 2.0 compatible

– SMBus ALERT (ARA) support
– SMBus timeout

■ RoHS/green

Applications

■ Solid state drives

■ Portable electronics

■ Notebook computers

■ Smart batteries

■ Servers

■ Telecom

Order code Pull-up resistor value SMBus address Comments

7.5 K ±5% 1001 000 b

STTS751-0DP3F

STTS751-0WB3F

STTS751-1DP3F

STTS751-1WB3F

July 2010 Doc ID 16483 Rev 5 1/36

12 K ±5% 1001 001 b

20 K ±5% 0111 000 b

33 K ±5% 0111 001 b

7.5 K ±5% 1001 010 b

12 K ±5% 1001 011 b

20 K ±5% 0111 010 b

33 K ±5% 0111 011 b

Address selection via resistor pull-up

on Addr/Therm

Address selection via resistor pull-up

on Addr/Therm

pin

pin

www.st.com

1

Contents STTS751

Contents

1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3 SMBus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1 SMBus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2 WRITE byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.3 READ byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.4 SEND byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.5 RECEIVE byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.6 SMBus addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.7 SMBus timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.8 Alert response address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4 STTS751 register summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.1 STTS751 register formats and details . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.2 Temperature register format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.3 Temperature limit register format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.4 Temperature examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.5 Status register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.6 Configuration register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.7 Conversion rate register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.8 One-shot register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.9 Therm limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.10 Therm hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.11 SMBus timeout register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.12 STTS751 product ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.13 STTS751 manufacturer’s ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.14 STTS751 revision ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5 EVENT output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2/36 Doc ID 16483 Rev 5

STTS751 Contents

6 Addr/Therm output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

8 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

10 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Doc ID 16483 Rev 5 3/36

List of tables STTS751

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 3. Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 4. SMBus WRITE byte protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 5. SMBus READ byte protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 6. SMBus SEND byte protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 7. SMBus RECEIVE byte protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 8. SMBus protocol response to ARA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 9. Registers/pointers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 10. Pointer register format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 11. Temperature register (two’s complement) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 12. Temperature limit register (two’s complement format) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 13. Temperature examples (two’s complement format) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 14. Status register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 15. Configuration register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 16. Conversion resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 17. Conversion rate register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 18. Conversion rates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 19. One-shot register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 20. Therm limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 21. Therm hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 22. SMBus timeout register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 23. Product ID register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 24. Manufacturer’s ID register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 25. Revision ID register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 26. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 27. Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Table 28. DC and AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 29. AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 30. UDFN-6L (2 mm x 2 mm x 0.5 mm) package mechanical data . . . . . . . . . . . . . . . . . . . . . 29

Table 31. SOT23-6L (2.90 mm x 2.80 mm) package mechanical data . . . . . . . . . . . . . . . . . . . . . . . 30

Table 32. Carrier tape dimensions for UDFN-6L and SOT23-6L packages . . . . . . . . . . . . . . . . . . . . 32

Table 33. Reel dimensions for 8 mm carrier tape - UDFN-6L and SOT23-6L packages . . . . . . . . . . 33

Table 34. Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 35. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

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STTS751 List of figures

List of figures

Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 2. Pinout - SOT23-6L and UDFN-6L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 3. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 4. Application hardware hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5. SMBus timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 6. EVENT
Figure 7. Therm

Figure 8. AC measurement I/O waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 9. UDFN-6L (2 mm x 2 mm x 0.5 mm) package mechanical drawing . . . . . . . . . . . . . . . . . . 29

Figure 10. SOT23-6L (2.90 mm x 2.80 mm) package mechanical drawing . . . . . . . . . . . . . . . . . . . . . 30

Figure 11. UDFN-6L package footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 12. SOT23-6L package footprint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 13. Carrier tape for UDFN-6L and SOT23-6L packages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 14. Reel schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Doc ID 16483 Rev 5 5/36

Description STTS751

1 Description

The STTS751 is a digital temperature sensor which communicates over a 2-wire SMBus 2.0
compatible bus. The temperature is measured with a user-configurable resolution between
9 and 12 bits. At 9 bits, the smallest step size is 0.5 °C, and at 12 bits, it is 0.0625 °C. At the
default resolution (10 bits, 0.25 °C/LSB), the conversion time is nominally 21 milliseconds.

The open-drain EVENT

output is used to indicate an alarm condition in which the measured
temperature has exceeded the user-programmed high limit or fallen below the low limit.
When the EVENT

pin is asserted, the host can respond using the SMBus Alert Response

Address (ARA) protocol to which the STTS751 will respond by sending its slave address.

The STTS751 is a 6-pin device that supports user-configurable slave addresses. Via the
pull-up resistor on the Addr/Therm

pin, one of four different slave addresses can be
specified. Two order numbers (STTS751-0 and STTS751-1) provide two different sets of
slave addresses bringing the total available to eight. Thus, up to eight devices can share the
same 2-wire SMBus without ambiguity, thereby allowing monitoring of multiple temperature
zones in an application.

The two-wire interface can support transfer rates up to 400 kHz. Two small footprint
packages are available: a UDFN-6L and a standard SOT23-6L package.

Figure 1. Logic diagram

V

DD

(1)

SDA

EVENT

STTS751-0

STTS751-1

SCL

Addr/Therm

GND

1. This pin may not float.

Table 2. Signal names

Symbol Type Description

Addr/Therm

EVENT

SDA I/O SMBus interface data I/O

SCL Input SMBus interface clock input

V

DD

GND Ground Device ground

6/36 Doc ID 16483 Rev 5

Output Address selection pin / thermal status pin

Output Event (alert) output

Power Device power supply

AM03028v1

STTS751 Description

Figure 2. Pinout - SOT23-6L and UDFN-6L

SOT23-6L

Addr/Therm

GND

V

DD

1

2

3

Table 3. Pin descriptions

Pin

Name Description

SOT23-6L UDFN-6L

14

Addr/Therm

UDFN-6L

SDA

6

5

EVENT

4

SCL

SCL

EVENT

V

DD

1

2

3

6

5

4

SDA

GND

Addr/Therm

Open-drain output that can be used to turn on/off a fan or throttle a CPU
clock in the event of an overtemperature condition.

The pin at power-up determines the SMBus slave address according to the
pull-up resistor value as shown in Ta bl e 1 .

This pin must have a pull-up resistor connected to the same voltage as V
or tied to GND (pin cannot float).

Total capacitance on this pin must be <100 pF.
Note: By tying Addr/Therm

to ground, the device functions as one address
device only. The Therm functionality is then not available. The address for
device STTS751-0 is 72h and the address for device STTS751-1 is 76h.

AM03029v1

DD

25GNDGND

33VDDPower supply V

DD

4 1 SCL SMBus clock

5 2 EVENT

Open-drain interrupt output. Output supports the SMBus Alert (ARA).
Note: This pin may not float.

6 6 SDA SMBus data input/output

Doc ID 16483 Rev 5 7/36

Description STTS751

Figure 3. Block diagram

V

DD

REGISTERS

Address Pointers

Temperature Registers

Status

SDA

SCL

SMBus

Interface

V

DD

Sensor

Control Logic

A to D
Converter

Configuration

Conversion Rate

High Limit Registers

Low Limit Registers

One-Shot

Therm LIMIT

Therm HYSTERESIS

SMBus Timeout

Product ID

Manufacturer ID

Revision ID

Interrupt Enabling

EVENT

Addr/Therm

Figure 4. Application hardware hookup

V

DD

SCL

SDA

STTS751-0

R

STTS751-1

GND

EVENT

Addr/Therm

GND

Digital Comparator

Alert Response

Host

Controller

AM03030v1

Fan

Driver

AM03031v1

8/36 Doc ID 16483 Rev 5

STTS751 Functional description

2 Functional description

The STTS751 digital temperature sensor acquires the temperature and stores it in the
temperature register. The resolution is programmable which allows the host controller to
select the optimal configuration between sensitivity and conversion times. The STTS751
can be placed in standby mode to minimize power consumption.

The user can control the update rate of the temperature measurements via the configuration
register (Table 15 on page 17). Sample rates can be adjusted from once every 16 seconds
up to 32 samples per second, in powers-of-2 steps.

These devices also offer a one-shot feature. When the device is in the standby mode, writing
to the one-shot register initiates a single temperature conversion. The result is compared
with the limit registers, and the outputs updated accordingly. Then the device returns to the
standby mode. Operating the device in this mode allows for very low average power
consumption, thereby making this device ideal for low power applications.

The device supports the SMBus Alert Response address (ARA) protocol. The ARA is polled
by the controller (host) device that supports this protocol whenever it detects that the
EVENT

Section 3.8 on page 12).

The STTS751 contains 16 registers. The register summary is shown in Table 9 on page 13.
Using register addresses not specified in the table may result in an incorrect response.
These registers and their functions are described in more detail in the following sections.

pin has been asserted. The STTS751 will respond with its device address (refer to

Doc ID 16483 Rev 5 9/36

SMBus interface STTS751

3 SMBus interface

3.1 SMBus protocol

The STTS751 communicates over a 2-wire serial interface compatible with the SMBus
standard. Temperature data, alarm limits and configuration information are communicated
over the bus. A detailed timing diagram is shown below in Figure 5.

Figure 5. SMBus timing diagram

SMCLK

SMDATA

T

PS

T

BUF

R

T

HD; STA

T

LOW

T

HD:DAT

T

SU:DAT

T

HIGH

T

F

S - start condition

P - stop condition

S

T

SU:STA

T

HD; STA

The STTS751 supports standard SMBus protocols (see Ta bl e 4 , 5, 6, and 7).

● WRITE byte

● READ byte

● SEND byte

● RECEIVE byte

● Alert response address

T

SU:STO

P

AM03067v1

10/36 Doc ID 16483 Rev 5

STTS751 SMBus interface

3.2 WRITE byte

The WRITE byte protocol is used to write one byte of data to the registers as shown in

Ta bl e 4 . The gray data is sent by the STTS751 while the white data is sent by the host.

Table 4. SMBus WRITE byte protocol

Start Slave address WR ACK

1 bit 7 bits 1 bit 1 bit 8 bits 1 bit 8 bits 1 bit 1 bit

Register

address

ACK Data ACK Stop

3.3 READ byte

The READ byte protocol is used to read one byte of data from the registers as shown in

Ta bl e 5 .

Table 5. SMBus READ byte protocol

Start Slave address WR ACK

1 bit 7 bits 1 bit 1 bit 8 bits 1 bit 1 bit 7 bits 1 bit 1 bit 8 bits 1 bit 1 bit

Register
address

ACK Start Slave address RD ACK Data NACK Stop

3.4 SEND byte

The SEND byte protocol is used to set the internal address register to the correct address. It
sends a register address with no data (see Tab l e 6 ). The SEND byte can be followed by the
RECEIVE byte protocol described below in order to read data from the register.

Table 6. SMBus SEND byte protocol

Start Slave address WR ACK Register address ACK Stop

1 bit 7 bits 1 bit

1 bit 8 bits 1 bit 1 bit

3.5 RECEIVE byte

The RECEIVE byte protocol is used to read data from the register when the internal register
address pointer is known (see Ta b le 7 ). This can be used for consecutive reads of the same
register.

Table 7. SMBus RECEIVE byte protocol

Start Slave address RD ACK Data NACK Stop

1 bit 7 bits 1 bit

1 bit 8 bits 1 bit 1 bit

Doc ID 16483 Rev 5 11/36

SMBus interface STTS751

3.6 SMBus addresses

The STTS751 is available in two versions. Each version has 4 slave addresses determined
by the pull-up resistor value connected to the Addr/Therm

pin. Refer to Ta bl e 1 for valid
address and recommended resistor values. The device will not respond to an invalid slave
address.

3.7 SMBus timeout

The STTS751 supports SMBus timeout which is enabled by default at power-up. This can
be disabled via bit 7 in the timeout register, refer to Section 4.11: SMBus timeout register.
When timeout is enabled, the STTS751 will time out after 25 to 35 ms of inactivity.

The STTS751 supports the SMBus timeout feature. If the host holds SCL low or the device
drives SDA low for more than t

TIMEOUT

(max), the STTS751 resets and releases the bus.
This feature is turned on by default. The STTS751 also supports timeout while in standby
mode and when the device is driving SDA low.

Note: The STTS751 never drives the clock line and it does not support clock stretching.

3.8 Alert response address

The STTS751supports the SMBus alert response address (ARA) protocol. In the event of
an out-of-limit temperature measurement, the EVENT
the host (supporting the ARA protocol) will send the SMBus Alert Response Address to the
general (slave) address of 0001_100b. All devices with active interrupts will respond with
their client addresses as shown in Table1 on page1 (with the LSB bit set to 0).

The STTS751 will acknowledge the ARA and respond with its slave device address. Ta bl e 8
shows the ARA transfer. See Section 5 for more information.

Table 8. SMBus protocol response to ARA

ALERT

Field START

Bits 171

RESPONSE

ADDRESS

RD ACK

output will be asserted. In response,

STTS751

SLAVE

ADDRESS

1 81 1

NACK STOP

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STTS751 STTS751 register summary

4 STTS751 register summary

The STTS751 uses 8-bit registers. Variables longer than 8 bits are managed in byte pairs.
For example, when reading a 10-bit temperature value (10 bits is the default resolution.) the
application must read two registers and then concatenate the upper byte with the 2 most
significant bits of the lower byte.

Ta bl e 9 below summarizes the register map for the device. Accessing any invalid address

results in indeterminate data.

Table 9. Registers/pointers

Address

pointers (h)

00 Temperature value high byte 8 R undefined

01 Status 8 R undefined

02 Temperature value low byte 8 R undefined

03 Configuration 8 R/W 0000 0000

04 Conversion rate 8 R/W 0000 0100

05 Temperature high limit high byte 8 R/W 0101 0101 (85 °C)

06 Temperature high limit low byte 8 R/W 0000 0000

07 Temperature low limit high byte 8 R/W 0000 0000 (0 °C)

08 Temperature low limit low byte 8 R/W 0000 0000

0F One-shot 8 W N/A

20 THERM limit 8 R/W 0101 0101 (85 °C)

21 THERM hysteresis 8 R/W 0000 1010 (10 °C)

22 SMBus timeout enable 8 R/W 1000 0000 (Enabled)

FD Product ID register 8 R

Device registers name Size Type

STTS751 register map

Power-up default values

binary (dec)

STTS751-0
[0000 0000]

STTS751-1
[0000 0001]

FE Manufacturer ID 8 R 0101 0011 (53h)

FF Revision number 8 R 0000 0001

In the following sections are the detailed descriptions of the registers along with their power­up default values. Examples are also included.

Doc ID 16483 Rev 5 13/36

STTS751 register summary STTS751

4.1 STTS751 register formats and details

The STTS751 register set is comprised of the 16 addresses shown in Tab l e 9 . The
individual registers are accessed by transferring their addresses via the SMBus interface as
shown in Section 3.2, 3.3, and 3.4. In the case of the RECEIVE byte sequence
(Section 3.5) the address used is the address sent in the previous WRITE, READ or SEND
byte sequence.

An example read sequence of the Therm hysteresis register, address 21h, with its default
value, 0Ah, is shown below. The slave address used is 90h. The gray data is sent by the
STTS751 while the white data is sent by the host.

Table 10. Pointer register format

START

SLAVE

ADDRESS

1001_000 0 0010_0001 1001_000 1 0000_1010

WR ACK

REGISTER

ADDRESS

ACK START

SLAVE

ADDRESS

RD ACK DATA NACK STOP

Note: All eight bits are used to select the register.

4.2 Temperature register format

The temperature data is a 12-bit number and is stored in two's complement format spanning
the high byte and low byte registers as shown in Ta bl e 1 1.

Table 11. Temperature register (two’s complement)

ADDR

(hex)

R/W Register b7 b6 b5 b4 b3 b2 b1 b0

00 R Temperature - high byte sign 64 °C 32 °C 16 °C 8 °C 4°C 2 °C 1 °C 00

02 R Temperature - low byte

½ °C ¼ °C

1

/

8

°C

1

/

°C 0 0 0 0 00

16

The integer portion of the temperature is stored in the high byte, and the fractional portion in
the low byte. The lower four bits of the low byte will always read 0. At power-up, the
STTS751 defaults to 10-bit resolution. Thus, bits b5 and b4 of the lower byte will also read 0
until the device is configured to a higher resolution (via the Tres bits in the configuration
register).

Power-up

default

(hex)

14/36 Doc ID 16483 Rev 5

STTS751 STTS751 register summary

4.3 Temperature limit register format

The high and low limit registers have the same format as the temperature register with the
integer portion of the two's complement value stored in the high byte and the fractional
portion in the low byte. These registers are read-write.

Note that the high limit defaults to 85 °C.

Table 12. Temperature limit register (two’s complement format)

ADDR

(hex)

R/W Register b7 b6 b5 b4 b3 b2 b1 b0

05 R/W High limit - high byte sign 64 °C 32 °C 16 °C 8 °C 4°C 2 °C 1 °C 55 (85 °C, dec)

06 R/W High limit - low byte ½ °C ¼ °C1/8 °C1/16 °C 0 0 0 0 00

07 R/W Low limit - high byte sign 64 °C 32 °C 16 °C 8 °C 4°C 2 °C 1 °C 00

08 R/W Low limit - low byte ½ °C ¼ °C

1

/8 °C1/16 °C 0 0 0 0 00

Power-up

default (hex)

4.4 Temperature examples

The table below shows several examples of how the data is arranged in the high and low
byte pairs used for the temperature and limit registers.

Table 13. Temperature examples (two’s complement format)

b7 b6 b5 b4 b3 b2 b1 b0

Weighting of the

bits

–64 °C

–63 °C

–1 °C

+1 °C

+5.3125 °C

+125 °C

1. With 12-bit resolution selected.

(1)

High byte sign 64 °C 32 °C 16 °C 8 °C 4°C 2 °C 1 °C

Low byte ½ °C ¼ °C

High byte 1 1 0 0 0 0 0 0

Low byte 0 0 0 0 0 0 0 0

High byte 1 1 0 0 0 0 0 1

Low byte 0 0 0 0 0 0 0 0

High byte 1 1 1 1 1 1 1 1

Low byte 0 0 0 0 0 0 0 0

High byte 0 0 0 0 0 0 0 1

Low byte 0 0 0 0 0 0 0 0

High byte 0 0 0 0 0 1 0 1

Low byte 0 1 0 1 0 0 0 0

High byte 0 1 1 1 1 1 0 1

Low byte 0 0 0 0 0 0 0 0

1

/8 °C

1

/16 °C 0 0 0 0

Note: The maximum and minimum values for the temperature registers are 127.9375 (7F:F0h,

high byte : low byte) and –64 (C0:00h), respectively. This also applies to the high and low
limit registers.

Doc ID 16483 Rev 5 15/36

STTS751 register summary STTS751

4.5 Status register

Table 14. Status register

ADDR

(hex)

R/W Register b7 b6 b5 b4 b3 b2 b1 b0

Power-up

default

(hex)

01 R Status Busy T

The STTS751 status register is read-only and located at address 01h. The various status
bits function as described below.

Busy: [7] Bit =1 when a temperature conversion is in progress.

T

: [6] Bit = 1 indicates temperature high limit has been exceeded (TA > high limit).

HIGH

T

is cleared when the status register is read, provided the condition no longer exists.

HIGH

T

: [5] Bit = 1 indicates the is at or below the low limit (TA ≤ low limit). T

LOW

when the status register is read, provided the condition no longer exists.

RFU: [4:1] Not used - reserved.

THRM: [0] Bit = 1 indicates the measured temperature has crossed the Therm limit. The
THRM bit will go low when the temperature falls below the Therm limit minus the Therm
Hysteresis. When the THRM bit is high, the Addr/Therm

HIGHTLOW

RFU RFU RFU RFU THRM undefined

is cleared

LOW

output will be asserted low.

16/36 Doc ID 16483 Rev 5

STTS751 STTS751 register summary

4.6 Configuration register

The STTS751 configuration register is read/write and controls the functionality of
temperature measurements. It is located at address 03h. The configuration register bits
function as described below.

Table 15. Configuration register

ADDR

(hex)

R/W Register b7 b6 b5 b4 b3 b2 b1 b0

Power-up

default

(hex)

03 R/W Configuration MASK1 RUN

/STOP 0 RFU Tres1 Tres0 RFU RFU 00

Description

MASK1: [bit 7]

0: EVENT

1: EVENT

RUN

/STOP: [bit 6]

is enabled. Any out-of-limit condition asserts the EVENT pin (active low).

is disabled.

0: Device is running in continuous conversion mode.

1: Device is in standby mode drawing minimum power.

The RUN

/STOP bit controls temperature conversions by the ADC. When this bit is 0, the
ADC converts temperatures in continuous mode, at a rate as selected by the Conversion
Rate register (Section 4.7). When the RUN

/STOP bit is 1, the ADC will be in standby mode,

thus reducing current supply significantly.

Note: The device can still be accessed via the SMBus while in standby mode.

When RUN

/STOP is 1 and the one-shot register is written to, the ADC will execute a

temperature measurement and then return to standby mode.

[bit 5]: This bit must always be 0.

RFU: [bit 4] Not used - reserved.

Doc ID 16483 Rev 5 17/36

STTS751 register summary STTS751

Tres1:Tres0 [bits 3 and 2]

These bits select one of the four programmable resolutions for temperature data on the
STTS751 providing resolutions down to 0.0625 °C/LSB. The default resolution is 10 bits,

0.25 °C/LSB.

Table 16. Conversion resolution

Tres1:Tres0 Temperature resolution LSB step size (°C)

00 10 bits (default) 0.25

01 11 bits 0.125

11 12 bits 0.0625

10 9 bits 0.5

RFU [bits 1 and 0] Not used - reserved.

4.7 Conversion rate register

The STTS751 conversion rate register is read/write and controls the number of times the
temperature value will be updated each second.

Table 17. Conversion rate register

ADDR

(hex)

R/W Register b7 b6 b5 b4 b3 b2 b1 b0

04 R/W Conversion rate 0 0 0 0 CONV[3:0] 04 (1/sec)

Power-up

default (hex)

The upper four bits of the register are reserved and default to 0 on power-up. The lower four
bits control the conversion rate as shown in the table below. The power-up default is 1
conversion per second. The current draw is proportional to the conversion rate, and goes up
at higher rates.

18/36 Doc ID 16483 Rev 5

STTS751 STTS751 register summary

Table 18. Conversion rates

CONV[3:0]

(hex)

00.0625 15

1 0.125

20.25

30.5

41 20

52

64

78 50

8 16 9, 10, or 11-bit resolutions only

9 32 125 9 or 10-bit resolutions only

A-F reserved

Conversions per second Typical current (µA) Comment

Note: The user must program the conversion rate and resolution bits (Tres1:Tres0 in the

configuration register, address 03h) to be consistent with this table. For a sampling rate of
32 conversions per second, the maximum resolution is 10 bits. For 16 conversions per
second, the maximum is 11 bits.

4.8 One-shot register

The STTS751 can be configured to perform a single temperature conversion on demand.
When the device is placed in standby mode (by setting RUN
register) a write to the one-shot register will invoke a temperature conversion. The device
will set the busy bit while the conversion is in progress. The conversion is complete when
the busy bit is cleared. The STTS751 returns to standby mode upon completion of the
conversion.

The one-shot register is write-only and is located at address 0Fh. The value written to
invoke the one-shot conversion is a don't care. The device responds only to the write at
address 0Fh and ignores the value written.

Note: Writes to the one-shot register will be ignored when the STTS751 is in continuous

conversion mode (ie. when RUN

/STOP=0).

Table 19. One-shot register

ADDR

(hex)

R/W Register b7 b6 b5 b4 b3 b2 b1 b0

0F W One shot X X X X X X X X n/a

/STOP to 1 in the configuration

Power-up

default (hex)

Doc ID 16483 Rev 5 19/36

STTS751 register summary STTS751

4.9 Therm limit

The Therm limit is a read/write register located at address 20h. The power-on default value
is 85 °C (55h). The format is 8-bit, two's complement integer. This is the same format as
the upper byte of the temperature register (Section 4.2: Temperature register format).

Whenever the temperature exceeds the value of the therm limit, the Addr/Therm

output will

be asserted (low). See Section 6 for more information.

Table 20. Therm limit

ADDR

(hex)

R/W Register b7 b6 b5 b4 b3 b2 b1 b0

20 R/W Therm sign 64 °C 32 °C 16 °C 8 °C 4 °C 2 °C 1 °C 55 (85 °C, dec)

Power-up

default (hex)

4.10 Therm hysteresis

The Therm hysteresis values controls the hysteresis for Addr/Therm output. Once Therm
output has asserted, it will not de-assert until the temperature has fallen below the
respective therm limit minus the therm hysteresis value. See Section 5 for more
information.

The therm hysteresis register is read/write and is located at address 21h. The power-up
default value is 10 °C (0Ah). The format is 8-bit, two's complement integer.

Table 21. Therm hysteresis

ADDR

(hex)

R/W Register b7 b6 b5 b4 b3 b2 b1 b0

21 R/W Therm hysteresis sign 64 °C 32 °C 16 °C 8 °C 4 °C 2 °C 1 °C 0A (10 °C, dec)

Power-up

default (hex)

4.11 SMBus timeout register

At power-up, the STTS751 is configured with an SMBus timeout of 25 to 35 milliseconds
(t

TIMEOUT

Table 22. SMBus timeout register

ADDR

(hex)

R/W Register b7 b6 b5 b4 b3 b2 b1 b0

22 R/W SMBus timeout TIMEOUT 0 0 0 0 0 0 0 80

TIMEOUT: [bit 7]

[bits 6:0] Not used - reserved.

20/36 Doc ID 16483 Rev 5

). See Section 3.7 for more information.

1: SMBus timeout is enabled. Default condition.

0: SMBus timeout is disabled.

Power-up

default (hex)

STTS751 STTS751 register summary

4.12 STTS751 product ID

The two versions of the STTS751 as shown in Ta b l e 1 can be identified via the read-only
Product ID register at address FDh. The STTS751-0 has a Product ID of 00h. The
STTS751-1 has a Product ID of 01h.

Table 23. Product ID register

ADDR

(hex)

R/W Register b7 b6 b5 b4 b3 b2 b1 b0 hex

FD R Product ID

0 0 0 0 0 0 0 0 00: STTS751-0

0 0 0 0 0 0 0 1 01: STTS751-1

4.13 STTS751 manufacturer’s ID

The read-only manufacturer's ID is located at address FEh. For the STTS751, the value is
53h.

Table 24. Manufacturer’s ID register

ADDR

(hex)

FE R Mfg ID 0 1 0 1 0 0 1 1 53

R/W Register b7 b6 b5 b4 b3 b2 b1 b0 hex

4.14 STTS751 revision ID

The STTS751 revision ID register pointer is read-only and can be accessed at address FFh.
The value is formatted as an unsigned, 8-bit integer.

Table 25. Revision ID register

ADDR

(hex)

FF R Revision ID 0 0 0 0 0 0 0 1

R/W Register b7 b6 b5 b4 b3 b2 b1 b0

Doc ID 16483 Rev 5 21/36

EVENT output STTS751

5 EVENT output

The STTS751 EVENT output is open drain and requires a pull-up resistor.

The EVENT

pin is asserted (low) whenever the temperature exceeds the high limit or is
equal to or below the low limit. Once asserted, the output will remain asserted until the
STTS751 receives an SMBus Alert Response Address (ARA) from the host and
acknowledges with its slave address. The output will be deasserted when the ARA is
acknowledged. If the triggering condition is still true, the output will be reasserted at the next
temperature conversion.

Figure 6 below shows how the EVENT

Figure 6. EVENT

output

output functions.

Temperature

Temperature high limit

Temperature low limit

Time

EVENT

SMBus ARA acknowledged

AM03032v1

22/36 Doc ID 16483 Rev 5

STTS751 Addr/Therm output

6 Addr/Therm output

The Addr/Therm pin functions normally as an output to alert the system of an over
temperature condition. It is open drain and requires a pull-up resistor. During power-up, the
pull-up value is sensed by the STTS751 to determine what its slave address will be as
depicted in Ta bl e 1 .

The Therm

output is asserted low whenever the temperature exceeds the Therm limit
(address 20h). Only the upper 8 bits of the temperature register are used in the
comparison with the Therm limit. Once asserted, Therm

will remain asserted until
temperature falls below the Therm limit minus the therm hysteresis value. For example, if
the Therm limit is 25 °C, and the therm hysteresis value is 10 °C, the Therm

output will
assert when the temperature exceeds 25 °C. It will remain asserted until the temperature
falls down to or below 15 °C (25 – 10).

This pin can be used to control a fan or other failsafe device as shown in Figure 4 on page 8.

Figure 7 below shows how the Therm

Figure 7. Therm

output

Temperature

Therm limit

Therm Limit minus

Therm Hysteresis

output functions.

Therm

Hysteresis

Time

Addr/Therm

AM03033v1

Doc ID 16483 Rev 5 23/36

Maximum ratings STTS751

7 Maximum ratings

Stressing the device above the rating listed in the absolute maximum ratings table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.

Table 26. Absolute maximum ratings

Symbol Parameter Value Unit

T

T

SLD

V

V

STG

I

Storage temperature (VDD off) –55 to 150 °C

(1)

Lead solder temperature 260 °C

Input or output voltage –0.3 to VDD + 0.3 V

IO

Supply voltage 5.0 V

DD

Output current 20 mA

O

UDFN-6L 78

θ

1. Reflow at peak temperature of 260 °C. The time above 255 °C must not exceed 30 seconds.

Thermal resistance (junction to ambient)

JA

SOT23-6L 191

°C/W

24/36 Doc ID 16483 Rev 5

STTS751 DC and AC parameters

8 DC and AC parameters

This section summarizes the operating measurement conditions, and the DC and AC
characteristics of the device. The parameters in the DC and AC characteristics tables that
follow, are derived from tests performed under the measurement conditions summarized in

Table 27: Operating and AC measurement conditions. Designers should check that the

operating conditions in their circuit match the operating conditions when relying on the
quoted parameters.

Table 27. Operating and AC measurement conditions

Parameter Conditions Unit

V

supply voltage - temperature sensor 2.25 to 3.6 V

DD

Ambient operating temperature (T

Input rise and fall times 5 ns

Input pulse voltages 0.2 V

Input and output timing reference voltages 0.3 V

) –40 to +125 °C

A

to 0.8 V

DD

DD

to 0.7 V

DD

DD

V

V

Figure 8. AC measurement I/O waveform

Input levels

0.8 *

V

DD

0.2 *

V

DD

Input and output timing
reference levels

0.7 *

V

DD

0.3 *

V

DD

AM04731v1

Doc ID 16483 Rev 5 25/36

DC and AC parameters STTS751

Table 28. DC and AC characteristics

Symbol Description Test condition

V

DD

Supply voltage 2.25 3.6 V

0.0625

conversions/second

I

DD

Operating current dependent upon

conversion rate

1 conversion/second

8 conversions/second 50 85 µA

32 conversions/second 125 250 µA

I

SB

Standby current 3 8 µA

Temperature measurement

Accuracy

(4)

2.25 V to 3.6 V

0 °C to 85 °C ±1.0 ±1.5 °C

–40 °C to +125 °C ±2.0 ±2.5 °C

temperature data

10-bit temperature data

(default)

Resolution

STTS751 is programmable from 9 bits

to 12 bits (0.5 °C/LSB to 0.0625 °C)

11-bit temperature data

12-bit temperature data

9-bit

(1)

(3)

(3)

Min Typ

(2)

15 35 µA

20 40 µA

0.5 °C/LSB

9bits

0.25 °C/LSB

10 bits

0.125 °C/LSB

11 bits

0.0625 °C/LSB

12 bits

Max Unit

t

CONV

V

I

OH

OL

High level output leakage current

Conversion time

Low level output voltage

Addr/Therm

EVENT

, SDA, Addr/Therm

SMBus interface inputs (SDA, SCL)

V

V

I

I

C

I

SINK

IH

IL

HI

LI

IN

Input logic high (SCL, SDA) 2.3 V ≤ VDD ≤ 3.6 V

Input logic low (SCL, SDA) 2.3 V ≤ VDD ≤ 3.6 V

Logical "1" input current 0 V ≤ VIN ≤ V

Logical "0" input current 0 V ≤ VIN ≤ V

Input capacitance (SDA) 5 pF

SMBus output low sink current SDA forced to 0.6 V 6 mA

, EVENT

9-bit 10.5 14 ms

10-bit (default) 21 28 ms

11-bit 42 56 ms

12-bit 84 112 ms

I

= 4 mA 0.4 V

OL

V

OH

= V

DD

DD

DD

0.7 x
V

DD

–1 1 µA

–1 1 µA

1µA

V

0.3 x
V

DD

V

26/36 Doc ID 16483 Rev 5

STTS751 DC and AC parameters

Table 28. DC and AC characteristics (continued)

Symbol Description Test condition

(1)

Min Typ

(2)

Max Unit

V

PV

V

POR

t

TIMEOUT

Pull-up supply voltage

(open drain)

Power On Reset threshold

(POR) - TS

SMBus timeout

(5)

25 35 ms

Spike suppression

t

SP

Pulse width of spikes that must

be suppressed by the input filter

1. Valid for ambient operating temperature: TA = –40 to +125 °C; VDD = 2.25 V to 3.6 V (except where noted).

2. Typical numbers are for T

3. Not tested, guaranteed by design.

4. Accuracy measurements made at resolutions > 10 bits.

5. SMBus timeout min and max are valid for T

Table 29. AC characteristics

= +25 °C; VDD = 3.0 V

A

A

= –30 to +125 °C.

(Addr/Therm

EVENT

, SDA, SCL –0.3 5.5 V

V

falling edge 1.75 V

DD

Input filter on SCL and

SDA

)–0.3 3.6V

50 ns

Symbol Description Min Typ Max Unit

f

SCL

t

HIGH

t

LOW

t

R

t

F

t

SU:DAT

t

HD:DI

t

HD:DAT

t

SU:STA

t

HD:STA

Hold time after (repeated) start condition. After this period,

SMBus/I2C clock frequency 10 400 kHz

Clock high period 600 ns

Clock low period 1.3 µs

Clock/data rise time 300 ns

Clock/data fall time 300 ns

Data setup time 100 ns

Data in hold time 0 ns

Data out hold time 300 ns

Start condition setup time 600 ns

the first clock cycle is generated.

600 ns

t

SU:STO

t

BUF

Stop condition setup time 600 ns

Bus free time between stop (P) and start (S) conditions 1.3 µs

Doc ID 16483 Rev 5 27/36

Package mechanical data STTS751

9 Package mechanical data

In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK

®

packages, depending on their level of environmental compliance. ECOPACK®

®

is an ST trademark.

28/36 Doc ID 16483 Rev 5

STTS751 Package mechanical data

Figure 9. UDFN-6L (2 mm x 2 mm x 0.5 mm) package mechanical drawing

8187820_A

Table 30. UDFN-6L (2 mm x 2 mm x 0.5 mm) package mechanical data

mm inches

Sym

Min Typ Max Min Typ Max

A 0.45 0.50 0.55 0.018 0.020 0.022

A1 0.00 0.05 0.000 0.002

A3 0.065 0.003

b 0.20 0.25 0.30 0.008 0.010 0.012

D 1.95 2.00 2.05 0.077 0.079 0.081

E 1.95 2.00 2.05 0.077 0.079 0.081

e0.65 0.026

L 0.50 0.60 0.70 0.020 0.024 0.028

Doc ID 16483 Rev 5 29/36

Package mechanical data STTS751

Figure 10. SOT23-6L (2.90 mm x 2.80 mm) package mechanical drawing

7049717_G

Table 31. SOT23-6L (2.90 mm x 2.80 mm) package mechanical data

mm inches

Sym

Min Typ Max Min Typ Max

A1.450.057

A1 0.00 0.15 0.000 0.006

A2 0.90 1.15 1.30 0.035 0.045 0.051

b 0.30 0.50 0.012 0.020

c 0.08 0.22 0.003 0.009

D2.90 0.114

E2.80 0.110

E1 1.60 0.063

e0.95 0.037

e1 1.90 0.075

L 0.30 0.45 0.60 0.012 0.018 0.024

θ 0° 4° 8° 0° 4° 8°

N6 6

30/36 Doc ID 16483 Rev 5

STTS751 Package mechanical data

Figure 11. UDFN-6L package footprint

Figure 12. SOT23-6L package footprint

8187820_A(LP)

7049714_G(LP)

Doc ID 16483 Rev 5 31/36

Package mechanical data STTS751

Figure 13. Carrier tape for UDFN-6L and SOT23-6L packages

P

D

T

A

TOP COVER

TAPE

K

0

0

CENTER LINES
OF CAVITY

P

2

B

0

0

P

1

E

F

W

USER DIRECTION OF FEED

Table 32. Carrier tape dimensions for UDFN-6L and SOT23-6L packages

Package W D E P

1.50

+0.10/

–0.00

1.50

+0.10/

–0.00

1.75

±0.10

1.75

±0.10

UDFN-6L

SOT23-6L

8.00

±0.30

8.00

+0.30/

–0.10

4.00

±0.10

4.00

±0.10

P

0

2.00

±0.05

2.00

±0.10

FA0B

2

3.50

±0.05

3.50

±0.05

2.20

±0.10

3.23

±0.10

0

2.20

±0.10

3.17

±0.10

0.75

±0.10

1.37

±0.10

AM03073v1

K

P

0

1

4.00

±0.10

4.00

±0.10

TUnit

0.25

±0.05

0.254

±0.013

mm

mm

32/36 Doc ID 16483 Rev 5

STTS751 Package mechanical data

Figure 14. Reel schematic

T

40mm min.

Access hole

At slot location

B

D

C

A

Tape slot

Full ra dius

In core for

Tape s tart

2.5mm min.width

N

G measured

At hub

AM04928v1

Table 33. Reel dimensions for 8 mm carrier tape - UDFN-6L and SOT23-6L packages

A

(max)

180 mm

(7 inch)

B

(min)

1.5 mm

C

13 mm

± 0.2 mm

D

(min)

N

(min)

20.2 mm 60 mm

G

8.4 mm

+ 2/–0 mm

T

(max)

14.4 mm

Note: The dimensions given in Ta bl e 3 3 incorporate tolerances that cover all variations on critical

parameters.

Doc ID 16483 Rev 5 33/36

Part numbering STTS751

10 Part numbering

Table 34. Ordering information scheme

Example: STTS751-0 DP 3 F

Device type

STTS751-0

STTS751-1

Package

DP = UDFN-6L

WB = SOT23-6L

Temperature range

3 = –40 °C to 125 °C

Shipping method

®

F = ECOPACK

E = ECOPACK

package, tape & reel

®

package, tubes

For other options, or for more information on any aspect of this device, please contact the
ST sales office nearest you.

34/36 Doc ID 16483 Rev 5

STTS751 Revision history

11 Revision history

Table 35. Document revision history

Date Revision Changes

06-Nov-2009 1 Initial release.

Updated Features; removed Therm2 throughout document (from

Section 1, 2, 3.8, 4.6, 4.10, 5, Figure 1, 2, 3, 4, 6, Ta b le 2 , 3, 15, 28);

21-Jan-2010 2

12-May-2010 3

updated Figure 3, Section 3.4, Section 4.6, Section 4.8, Section 4.10,

Ta bl e 1 0 , 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25; added

package footprints (Figure 11 and 12); minor textual changes.

Updated Section 3.7, Section 4.11, Section 5; Figure 6, 7, 11, 12;

Ta bl e 3 , 9, 25, 28,

Ta bl e 3 1 ; added tape and reel information

(Figure 13, 14 and Ta bl e 3 2 , 33); minor textual changes in title and
document.

01-Jul-2010 4

Document status upgraded to full datasheet; updated cover page;
added footnote to Ta bl e 2 8 ; minor textual changes.

20-Jul-2010 5 Removed footnote from Tab le 2 8 .

Doc ID 16483 Rev 5 35/36

STTS751

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