MICROCHIP TC54 Technical data

M

OUT

SS

C54

3

TC54

Voltage Detector

Features

• Precise Detection Thresholds: Standard ±2.0%,
Custom ±1.0%

• Small Packages: 3-Pin SOT-23A, 3-Pin SOT-89,
5-Pin SOT-23A (7.7V only)

• Low Current Drain: Typ. 1µA

• Wide Detection Range: 1.1V to 6.0V and 7.7V

• Wide Operating Voltage Range: 0.7V to 10V

Applications

• Battery Voltage Monitoring

• Microprocessor Reset

• System Brown-out Protection

• Switching Circuit in Battery Backup

• Level Discriminator

Device Selection Table

Part Number Package Temp. Range

TC54-xxxxxxxxxxx 3-Pin SOT-23A -40°C to +85°C

TC54-xxxxxxxxxxx 3-Pin SOT-89 -40°C to +85°C

TC54-xxxxxxxxxxx 5-Pin SOT-23A -40°C to +85°C

Other output voltages are available. Please contact Microchip
Technology Inc. for details.

Package Type

General Description

The TC54 Series are CMOS voltage detectors, suited
especially for battery-powered applications because of

their extremely low 1µA operating current and small

surface-mount packaging. Each part is laser trimmed to
the desired threshold voltage which can be specified
from 1.1V to 6.0V and 7.7V, for a 2% and 1.5V to 6.0V
for a 1% tolerance.

The device includes a comparator, low-current high­precision reference, laser-trimmed divider, hysteresis
circuit and output driver. The TC54 is available with
either an open-drain or complementary output stage.

In operation, the TC54's output (V
logic HIGH state as long as V
specified threshold voltage (V
below V

- the output is driven to a logic LOW. V

DET

remains LOW until VIN rises above V
amount V

, whereupon it resets to a logic HIGH.

HYST

) remains in the

OUT

is greater than the

IN

-). When VIN falls

DET

- by an

DET

OUT

Functional Block Diagram

2

V

IN

–
+

TC54VC only

V

OUT

1

3-Pin SOT-23A 3-Pin SOT-89

V

REF

T

132

V

OUT

5-Pin SOT-23A

NC

5

1

V

OUTVINVSS

NOTE: 3-Pin SOT-23A is equivalent to the EIAJ SC-59.

5-Pin SOT-23A is equivalent to the EIAJ SC-74A.

 2002 Microchip Technology Inc. DS21434C-page 1

TC54

2

NC

4

3

TC54

V

V

IN

SS

TC54VN has open-drain output.
TC54VC has complementary output.

V

SS

3

TC54

1.0 ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings*

Input Voltage ........................................................+12V

Output Current .................................................... 50mA

Output Voltage: CMOS..... (V

Open Drain ..........(V

Power Dissipation (T

≤ 70°C):

A

– 0.3V) to (VIN + 0.3V)

SS

– 0.3V) to 12V

SS

*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.

3-Pin SOT-23A...........................................240mW

3-Pin SOT-89 .............................................400mW

5-Pin SOT-23A...........................................240mW

Operating Temperature Range.............-40°C to +85°C

Storage Temperature Range..............-65°C to +150°C

TC54 ELECTRICAL SPECIFICATIONS

Electrical Characteristics: TA = 25°C, unless otherwise specified.

Symbol Parameter Min Typ Max Units Test Conditions

V

IN

I

SS

- Threshold Voltage V

V

DET

V

HYST

I

OUT

(V

T

C

DET

Operating Voltage 0.7 — 10.0 V (V

Quiescent Current —

Hysteresis Voltage V

Output Current —

-) Tempco of (V

1.0
—
—
—

- x 0.98 — V

DET

- x 0.02 V

DET

1.3

1.6

2.0

- x 0.05 V

DET

7.7
—
—
—

—

-) — ±100 — ppm/°C -40°C ≤ T

DET

10.1

11.5

13.0

-10.0

3.0

3.4

3.8

4.2

- x 1.02 V

DET

- x 0.08 V

DET

—
—
—
—

—

µAV

mA VOL = 0.5V, VIN = 2.1V

-) = 0.8 to 6.0V

DET

= 2.1V

IN

V

= 3.0V

IN

V

= 4.0V

IN

V

= 5.0V

IN

V

= 3.0V

IN

V

= 4.0V

IN

V

= 5.0V

≤ 85°C

A

IN

TC54VC Only;
V

= VIN – 2.1V, VIN = 8.0V

OH

DS21434C-page 2  2002 Microchip Technology Inc.

2.0 PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 2-1.

TABLE 2-1: PIN FUNCTION TABLE

Pin No.

(3-Pin SOT-23A)

(3-Pin SOT-89)

1V

2V

3V

Symbol Description

OUT

IN

SS

Digital output. This output goes low when VIN drops below V
rises above V

Analog input. This pin is both the power supply input and the voltage to be monitored.

Ground terminal.

DET

- + V

. (See Figure 3-1, Timing Diagram.)

HYST

TC54

- and returns high when VIN

DET

Pin No.

(5-Pin SOT-23A)

1V

2V

3V

4 NC Not connected.

5 NC Not connected.

Symbol Description

OUT

IN

SS

Digital output. This output goes low when VIN drops below V
rises above V

Analog input. This pin is both the power supply input and the voltage to be monitored.

Ground terminal.

DET

- + V

. (See Figure 3-1, Timing Diagram.)

HYST

- and returns high when VIN

DET

 2002 Microchip Technology Inc. DS21434C-page 3

TC54

g

ge

ST

ge

ge

ge

OUT

3.0 DETAILED DESCRIPTION

In normal steady-state operation, when VIN > V
the output will be at a logic high, see Figure 3-1. In the
case of the TC54V, this is an open-drain condition. If
and when the input falls below V
pull down (Logic 0) to V
down to within 0.5V of V

. Generally, V

SS

at rated output current and

SS

-, the output will

DET

input voltage. (See Section 1.0, Electrical
Characteristics).

FIGURE 3-1: TIMING DIAGRAM

Detect Voltage V

Minimum Operatin

Volta

Ground Level

OUT

DET

can pull

The output, V
falls below the minimum operating voltage, V

-,

0.7V. Below this minimum operating voltage, the output
is undefined. During power-up or anytime V
below V
above V
valid. V
V

IN

< V

IN

IN

OUT

DET

the input rises above V

, will stay valid until the input voltage

OUT

has fallen

, V

will remain undefined until VIN rises

OUT

MIN

, at which time the output will become

MIN

IN

will be in its active low state while V

+. (V

DET

+ = V

- + V

DET

+, the output will assume its

DET

HYST

). If and when

, of

IN

MIN

<

IN

MIN

inactive state. (High for TC54VC, open-drain for
TC54VN).

Release Volta

HY

or RESET Volta

Output Volta

Ground Level

4.0 APPLICATIONS INFORMATION

Refer to Microchip Technology Application Note #779,
Using the TC54 Voltage Detector.

DS21434C-page 4  2002 Microchip Technology Inc.

5.0 PACKAGING INFORMATION

5.1 Package Marking Information

TC54

3

1

represents output configuration (CMOS or Nch)

and first integer of voltage

Ex: CMOS 3.x =

D

Symbol Output Voltage

BCMOS1.

CCMOS2.

DCMOS3.

ECMOS4.

FCMOS5.

HCMOS6.

Symbol Output Voltage

LNch1.

MNch2.

NNch3.

PNch4.

RNch5.

SNch6.

TNch7.

represents first decimal of output voltage (0-9)

2

4

Ex: CMOS 3.x =

D

1

represents output configuration and first integer
of voltage

Symbol Output Voltage

TNch7.

2

represents first decimal of output voltage

Symbol Voltage

0.0

1.1

2.2

3.3

4.4

5.5

6.6

7.7

8.8

9.9

3

represents assembly lot code

4

&

3

 2002 Microchip Technology Inc. DS21434C-page 5

represents assembly lot code

4

&

TC54

5.2 Taping Form

Component Taping Orientation for 3-Pin SOT-23A (EIAJ SC-59) Devices

User Direction of Feed

Device

Marking

W

PIN 1

Standard Reel Component Orientation
for TR Suffix Device
(Mark Right Side Up)

Carrier Tape, Number of Components Per Reel and Reel Size

Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size

3-Pin SOT-23A 8 mm 4 mm 3000 7 in

P

Component Taping Orientation for 3-Pin SOT-89 Devices

User Direction of Feed

Device

Marking

W

PIN 1

P

Standard Reel Component Orientation
for TR Suffix Device
(Mark Right Side Up)

Carrier Tape, Reel Size, and Number of Components Per Reel

Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size

3-Pin SOT-89 12 mm 8 mm 1000 7 in

DS21434C-page 6  2002 Microchip Technology Inc.

5.2 Taping Form (Continued)

Component Taping Orientation for 5-Pin SOT-23A (EIAJ SC-74A) Devices

Device

Marking

TC54

User Direction of Feed

W

PIN 1

Carrier Tape, Number of Components Per Reel and Reel Size

Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size

5-Pin SOT-23A 8 mm 4 mm 3000 7 in

5.3 Package Dimensions

SOT-23A-3

.118 (3.00)
.098 (2.50)

PIN 1

P

Standard Reel Component Orientation
TR Suffix Device
(Mark Right Side Up)

.020 (0.50)
.012 (0.30)

.071 (1.80)
.055 (1.40)

.075 (1.90)

REF.

.122 (3.10)
.106 (2.70)

.051 (1.30)
.035 (0.90)

.006 (0.15)
.000 (0.00)

 2002 Microchip Technology Inc. DS21434C-page 7

10° MAX.

.022 (0.55)
.014 (0.35)

Dimensions: inches (mm)

.010 (0.25)
.004 (0.09)

TC54

5.3 Package Dimensions (Continued)

SOT-89-3

.181 (4.60)
.173 (4.39)

.071 (1.80)
.063 (1.60)

.063 (1.60)
.055 (1.40)

.019 (0.48)
.014 (0.36)

PIN 1

SOT-23A-5

.122 (3.10)
.098 (2.50)

.020 (0.50)
.012 (0.30)

.022 (0.56)
.016 (0.41)

PIN 1

.063 (1.60)
.055 (1.40)

.075 (1.90)

REF.

.019 (0.48)
.014 (0.36)

.037 (0.95)

.102 (2.59)
.090 (2.29)

.031 (0.79) MIN.

.071 (1.80)
.059 (1.50)

REF.

.167 (4.24)

.017 (0.43)
.014 (0.36)

Dimensions: inches (mm)

.122 (3.10)
.106 (2.70)

.057 (1.45)
.035 (0.90)

.006 (0.15)
.000 (0.00)

DS21434C-page 8  2002 Microchip Technology Inc.

10° MAX.

.024 (0.60)
.004 (0.10)

Dimensions: inches (mm)

.010 (0.25)
.004 (0.09)

PRODUCT IDENTIFICATION SYSTEM

To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office

PART CODE TC54V X XX X X X XX XXX

Output Configuration:

N = Nch Open Drain
C = CMOS Output

Detected Voltage:

Ex: 15 = 1.5V; 60 = 6.0V
Ex: 11 = 1.1V; 60 = 6.0V

Extra Feature Code:
Fixed: 0

Tolerance:

1 = ±1% (custom)
2 = ±2% (standard)

Temperature:

E: -40°C to +85°C

Package Type and Pin Count:

CB: 3-Pin SOT-23A (equivalent to EIAJ SC-59)
MB: 3-Pin SOT-89
CT: 5-Pin SOT-23A (equivalent to EIAJ SC-74A)

TC54

Taping Direction:

TR: Standard Taping

Sales and Support

Data Sheets

Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom­mended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:

1. Your local Microchip sales office

2. The Microchip Corporate Literature Center U.S. FAX: [phone]

3. The Microchip Worldwide Site (www.microchip.com)

Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.

New Customer Notification System

Register on our web site (www.microchip.com/cn) to receive the most current information on our products.

 2002 Microchip Technology Inc. DS21434C-page9

TC54

NOTES:

DS21434C-page10  2002 Microchip Technology Inc.

TC54

Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Micr ochip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip’s products as critical com­ponents in life support systems is not authorized except with
express written approval by Microchip. No licenses are con­veyed, implicitly or otherwise, under any intellectual property
rights.

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The Microchip name and logo, the Microchip logo, FilterLab,
K

EELOQ

, microID, MPLAB, MXDEV, PIC, PICmicro,
PICMASTER, PICSTART, PRO MATE, SEEVAL and The
Embedded Control Solutions Company are registered trade­marks of Microchip Technology Incorporated in the U.S.A. and
other countries.

dsPIC, dsPICDEM.net, ECONOMONITOR, FanSense,
FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP,
ICEPIC, microPort, Migratable Memory, MPASM, MPLIB,
MPLINK, MPSIM, MXLAB, PICC, PICDEM, PICDEM.net,
rfPIC, Select Mode and Total Endurance are trademarks of
Microchip Technology Incorporated in the U.S.A.

Serialized Quick Turn Programming (SQTP) is a service mark
of Microchip Technology Incorporated in the U.S.A.

All other trademarks mentioned herein are property of their
respective companies.

© 2002, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.

Printed on recycled paper.

 2002 Microchip Technology Inc. DS21434C-page 11

M

W

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DS21434C-page 12  2002 Microchip Technology Inc.