Texas Instruments TPS767D325PWP, TPS767D325PWPR, TPS767D318PWPR, TPS767D318PWP, TPS767D301PWPR Datasheet

TPS767D301, TPS767D318, TPS767D325

DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS

SLVS209B – JULY 1999 – REVISED APRIL 2000

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D

Dual Output Voltages for Split-Supply

Applications

D

Output Current Range of 0 mA to 1.0 A Per

Regulator

D

3.3-V/2.5-V, 3.3-V/1.8-V, and 3.3-V/Adjustable

Output

D

Fast-Transient Response

D

2% Tolerance Over Load and Temperature

D

Dropout Voltage Typically 350 mV at 1 A

D

Ultra Low 85 µA Typical Quiescent Current

D

1 µA Quiescent Current During Shutdown

D

Dual Open Drain Power-On Reset With

200-ms Delay for Each Regulator

D

28-Pin PowerP AD TSSOP Package

D

Thermal Shutdown Protection for Each

Regulator

description

The TPS767D3xx family of dual voltage regulators offers fast transient response, low dropout voltages and dual

outputs in a compact package and incorporating stability with 10-µF low ESR output capacitors.

t – Time – µs

LOAD TRANSIENT RESPONSE

I – Output Current – A

O

V

O

– Change in∆

Output Voltage – mV

1

0.5

604020 80 100 140120 160 180 200

0

V

O

= 3.3 V

C

L

=100 µF

T

A

= 25°C

0

0

50

100

–50

–100

T

A

– Free-Air Temperature – °C

–40 0 20 120

10

3

–60 40 60 80 100

– Dropout Voltage – mV

V

DO

DROPOUT VOLTAGE

vs

FREE-AIR TEMPERATURE

10

2

10

1

10

0

10

–1

10

–2

–20 140

I

O

= 1 A

I

O

= 10 mA

I

O

= 0

V

O

= 3.3 V

C

O

= 10 µF

Copyright  2000, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments Incorporated.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

NC

NC

1GND

1EN

1IN

1IN

NC

NC

2GND

2EN

2IN

2IN

NC

NC

1RESET

NC

NC

1FB/NC

1OUT

1OUT

2RESET

NC

NC

NC

2OUT

2OUT

NC

NC

PWP PACKAGE

(TOP VIEW)

NC – No internal connection

TPS767D301, TPS767D318, TPS767D325

DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS

SLVS209B – JULY 1999 – REVISED APRIL 2000

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

description (continued)

The TPS767D3xx family of dual voltage regulators is designed primarily for DSP applications. These devices

can be used in any mixed-output voltage application, with each regulator supporting up to 1 A. Dual active-low

reset signals allow resetting of core-logic and I/O separately.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 350 mV

at an output current of 1 A for the TPS767D325) and is directly proportional to the output current. Additionally ,

since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent

of output loading (typically 85 µA over the full range of output current, 0 mA to 1 A). These two key specifications

yield a significant improvement in operating life for battery-powered systems. This LDO family also features a

sleep mode; applying a TTL high signal to EN

(enable) shuts down the regulator, reducing the quiescent current

to 1 µA at T

J

= 25°C.

The RESET

output of the TPS767D3xx initiates a reset in microcomputer and microprocessor systems in the

event of an undervoltage condition. An internal comparator in the TPS767D3xx monitors the output voltage of

the regulator to detect an undervoltage condition on the regulated output voltage.

The TPS767D3xx is offered in 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version

(programmable over the range of 1.5 V to 5.5 V). Output voltage tolerance is specified as a maximum of 2%

over line, load, and temperature ranges. The TPS767D3xx family is available in 28 pin PWP TSSOP package.

They operate over a junction temperature range of –40°C to 125°C.

AVAILABLE OPTIONS

T

A

REGULATOR 1

V

O

(V)

REGULATOR 2

V

O

(V)

TSSOP

(PWP)

Adj (1.5 – 5.5 V) 3.3 V TPS767D301PWP

–40°C to 125°C

1.8 V 3.3 V TPS767D318PWP

2.5 V 3.3 V TPS767D325PWP

The TPS767D301 is adjustable using an external resistor divider (see application

information). The PWP packages are available taped and reeled. Add an R suffix

to the device type (e.g., TPS767D301PWPR).

RESET

OUT

OUT

6

5

4

IN

IN

EN

GND

3

28

24

23

V

I

C1

0.1 µF

50 V

RESET

V

O

10 µF

+

TPS767D3xx

C

O

250 kΩ

Figure 1. Typical Application Circuit (Fixed Versions) for Single Channel

TPS767D301, TPS767D318, TPS767D325

DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS

SLVS209B – JULY 1999 – REVISED APRIL 2000

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

functional block diagram—adjustable version (for each LDO)

_

+

V

ref

= 1.1834 V

OUT

EN

GND

R1

R2

RESET

_

+

IN

200 ms Delay

functional block diagram—fixed-voltage version (for each LDO)

200 ms Delay

_

+

V

ref

= 1.1834 V

OUT

FB/NC

EN

GND

RESET

_

+

IN

External to the device

R1

R2

TPS767D301, TPS767D318, TPS767D325

DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS

SLVS209B – JULY 1999 – REVISED APRIL 2000

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Terminal Functions

TERMINAL

NAME NO.

I/O

DESCRIPTION

1GND 3 Regulator #1 ground

1EN 4 I Regulator #1 enable

1IN 5, 6 I Regulator #1 input supply voltage

2GND 9 Regulator #2 ground

2EN 10 I Regulator #2 enable

2IN 11, 12 I Regulator #2 input supply voltage

2OUT 17, 18 O Regulator #2 output voltage

2RESET 22 O Regulator #2 reset signal

1OUT 23, 24 O Regulator #1 output voltage

1FB/NC 25 I Regulator #1 output voltage feedback for adjustable and no connect for fixed output

1RESET 28 O Regulator #1 reset signal

NC 1, 2, 7, 8,

13–16, 19, 20,

21, 26, 27

No connection

timing diagram

†

V

res

is the minimum input voltage for a valid RESET

. The symbol V

res

is not currently listed within EIA or JEDEC standards

for semiconductor symbology.

V

I

V

res

†

V

res

t

t

t

V

O

Threshold

Voltage

RESET

Output

200 ms

Delay

200 ms

Delay

Output

Undefined

Output

Undefined

V

IT+

‡

V

IT–

V

IT–

V

IT+

‡

Less than 5% of the

output voltage

‡

VIT –Trip voltage is typically 5% lower than the output voltage (95%V

O

)

TPS767D301, TPS767D318, TPS767D325

DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS

SLVS209B – JULY 1999 – REVISED APRIL 2000

5

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

absolute maximum ratings over operating free-air temperature (unless otherwise noted)

†

Input voltage range

‡

, V

I

–0.3 V to 13.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage range, V

I

(1IN, 2IN, EN) –0.3 V to V

I

+ 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage, V

O

(1OUT, 2OUT) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage, V

O

(RESET) 16.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Peak output current Internally limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ESD rating, HBM 2 kV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation See dissipation rating tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating virtual junction temperature range, T

J

–40°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

stg

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond 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 beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

‡

All voltage values are with respect to network terminal ground.

DISSIPATION RATING TABLE

PACKAGE

AIR FLOW

(CFM)

T

A

≤ 25°C

POWER RATING

БББББ

Á

DERATING FACTOR

ABOVE T

A

= 25°C

T

A

= 70°C

POWER RATING

T

A

= 85°C

POWER RATING

0

3.58 W

35.8 mW/°C

1.97 W

1.43 W

PWP

†

250 5.07 W

50.7 mW/°C 2.79 W 2.03 W

†

This parameter is measured with the recommended copper heat sink pattern on a 4–layer PCB, 1 oz. copper on 4–in x 4–in

ground layer. For more information, refer to TI technical brief literature number SLMA002.

recommended operating conditions

MIN MAX UNIT

Input voltage, V

I

#

(1IN, 2IN)

2.7 10 V

Output current for each LDO, I

O

(Note 1) 0 1.0 A

Output voltage range, V

O

(1OUT, 2OUT) 1.5 5.5 V

Operating virtual junction temperature, T

J

–40 125 °C

#

To calculate the minimum input voltage for your maximum output current, use the following equation: V

I(min)

= V

O(max)

+ V

DO(max

load)

.

NOTE 1: Continuous current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the

device operate under conditions beyond those specified in this table for extended periods of time.

TPS767D301, TPS767D318, TPS767D325

DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS

SLVS209B – JULY 1999 – REVISED APRIL 2000

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics, V

i

= V

O(nom)

+ 1 V , I

O

= 1 mA, EN = 0, C

O

= 10 µF(unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

1.5 V ≤ V

≤ 5.5 V,

T

J

= 25°C V

O

Adj

u

stable

O

,

10 µA < I

O

< 1 A

T

J

= –40°C to 125°C 0.98V

O

1.02V

O

p

2.8 V < V

< 10 V,

T

J

= 25°C 1.8

Output voltage (V

)

1

.

8

V

O

u

p

u

t

I

,

10 µA < I

O

< 1 A

T

J

= –40°C to 125°C 1.764 1.836

V

g(

O

)

(see Note 2)

p

3.5 V < V

< 10 V,

T

J

= 25°C 2.5

2

.

5

V

O

u

tp

u

t

I

,

10 µA < I

O

< 1 A

T

J

= –40°C to 125°C 2.45 2.55

p

4.3 V < V

< 10 V,

T

J

= 25°C 3.3

3

.

3

V

O

u

tp

u

t

I

,

10 µA < I

O

< 1 A

T

J

= –40°C to 125°C 3.234 3.366

V

Quiescent current (GND current) for each LDO

10 µA < I

O

< 1 A, T

J

= 25°C 85

(

see

N

o

t

e

2)

I

O

= 1 A, T

J

= –40°C to 125°C 125

µ

A

Output voltage line regulation for each LDO

(∆V

O

/V

O

)

(see Notes 2 and 3)

V

O

+ 1 V < V

I

≤ 10 V, T

J

= 25°C 0.01 %/V

Output noise voltage

BW = 300 Hz to 50 kHz,

C

O

= 10 µF, T

J

= 25°C

190 µVrms

Output current Limit for each LDO V

O

= 0 V 1.7 2 A

Thermal shutdown juction temperature 150 °C

2.7 < V

I

< 10V ,

T

J

= 25°C,

EN = V

I,

1 µA

Standb

y

c

u

rrent

for

each

LDO

2.7 < V

I

< 10V ,

T

J

= –40°C to 125°C

EN = V

I,

10 µA

FB input current Adjustable FB = 1.5 V 2 nA

High level enable input voltage 2.0 V

Low level enable input voltage 0.8 V

Power supply ripple rejection (see Note 2)

f = 1 KHz,

T

J

= 25°C,

C

O

= 10 µF

60 dB

Minimum input voltage for valid RESET I

O(RESET)

= 300µA 1.1 V

Trip threshold voltage V

O

decreasing 92 98 %V

O

Hysteresis voltage Measured at V

O

0.5 %V

O

Reset

Output low voltage V

I

= 2.7 V, I

O(RESET)

= 1 mA 0.15 0.4 V

Leakage current V

(RESET)

= 7 V 1 µA

RESET time-out delay 200 mA

NOTES: 2. Minimum IN operating voltage is 2.7 V or V

O(typ)

+ 1 V, whichever is greater. maximum IN voltage 10V.

3. If VO ≤ 1.8 V, V

imin

= 2.7 V, and V

imax

= 10 V:

Line Reg. (mV)

+

ǒ

%

ń

V

Ǔ

V

O

ǒ

V

imax

*

2.7 V

Ǔ

100

1000

If VO ≥ 2.5 V, V

imin

= Vo + 1 V, and V

imax

= 10 V:

Line Reg. (mV)

+

ǒ

%

ń

V

Ǔ

V

O

ǒ

V

imax

*

ǒ

V

O

)

1V

Ǔ

Ǔ

100

1000