TEXAS INSTRUMENTS TPS7415, TPS7418, TPS7425, TPS7430, TPS7433 Technical data

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TPS7415, TPS7418, TPS7425, TPS7430, TPS7433

FAST-TRANSIENT -RESPONSE USING SMALL OUTPUT CAPACITOR

200-mA LOW-DROPOUT VOLTAGE REGULATORS

SLVS212 – DECEMBER 1999

D

Fast Transient Response Using Small
Output Capacitor (10 µF)

D

200-mA Low-Dropout Voltage Regulator

D

Available in 1.5-V, 1.8-V, 2.5-V , 3-V and 3.3-V

D

Dropout Voltage Down to 170 mV at 200 mA
(TPS7433)

D

3% Tolerance Over Specified Conditions

D

8-Pin SOIC Package

D

Thermal Shutdown Protection

D PACKAGE

(TOP VIEW)

EN

1

NC

2

NC

3
4

IN

NC – No internal connection

8
7
6
5

SENSE
OUT
GND
IN

description

This device is designed to have a fast transient response and be stable with 1-µF capacitors. This combination
provides high performance at a reasonable cost.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 170 mV
at an output current of 200-mA for the TPS7433). 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 less than 1 µA at
TJ = 25°C.

The TPS74xx is offered in 1.5-V, 1.8-V, 2.5-V, 3-V, and 3.3-V. Output voltage tolerance is specified as a
maximum of 3% over line, load, and temperature ranges. The TPS74xx family is available in 8 pin SOIC
package.

TPS7433

300

250

200

150

DROPOUT VOLTAGE

JUNCTION TEMPERATURE

VI = 3.2 V

vs

IO = 200 mA

100

50

0

– Change in

O

–50

V

∆

Output Voltage – mV

LOAD TRANSIENT RESPONSE

200 mA

di/dt =

25 µs

TPS7418

CO = 10 µF

100

– Dropout Voltage – mV

DO

V

50

0

–25 250 50 75 100 125 150

–50

TJ – Junction Temperature – °C

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.

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.

IO = 75 mA

IO = 50 mA

200

IO = 1 mA

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

0

O

I – Output Current – mA

0 300200100 400 500 700600 800 900 1000

t – Time – µs

Copyright  1999, Texas Instruments Incorporated

1

TPS7415, TPS7418, TPS7425, TPS7430, TPS7433

T

FAST-TRANSIENT -RESPONSE USING SMALL OUTPUT CAPACITOR
200-mA LOW-DROPOUT VOLTAGE REGULATORS

SLVS212 – DECEMBER 1999

AVAILABLE OPTIONS

OUTPUT VOLTAGE

J

–40°C to 125°C

The D package is available taped and reeled. Add an R suffix to the device type (e.g.,
TPS7433DR).

V

I

1 µF

(V)

TYP

3.3 TPS7433D
3 TPS7430D

2.5 TPS7425D

1.8 TPS7418D

1.5 TPS7415D

TPS74xx

4
5

1

SENSE SENSE

IN
IN

EN

GND

PACKAGED DEVICES

8

7

OUT

6

SOIC

(D)

+

ESR

1 µF

V

C

O

O
†

functional block diagram

IN

EN

V

ref

†

See application information section for capacitor selection details.

Figure 1. Typical Application Configuration

_
+

GND

OUT

SENSE

R1

R2

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

I/O

DESCRIPTION

D

FAST-TRANSIENT -RESPONSE USING SMALL OUTPUT CAPACITOR

Terminal Functions

TERMINAL

NAME NO.

EN 1 I Enable input
GND 6 Regulator ground
IN 4, 5 I Input voltage
NC 2, 3 Not connected
OUT 7 O Regulated output voltage
SENSE 8 I Sense

TPS7415, TPS7418, TPS7425, TPS7430, TPS7433

200-mA LOW-DROPOUT VOLTAGE REGULATORS

SLVS212 – DECEMBER 1999

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

Input voltage range‡, VI –0.3 V to 8 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage range at EN

–0.3 V to VI + 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

Operating virtual junction temperature range, TJ –40°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

†

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 1 – FREE-AIR TEMPERATURES

PACKAGE

AIR FLOW

(CFM)

0 568 mW 5.68 mW/°C 312 mW 227 mW

250 904 mW 9.04 mW/°C 497 mW 361 mW

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

stg

TA < 25°C

POWER RATING

DERATING FACTOR

ABOVE TA = 25°C

TA = 70°C

POWER RATING

TA = 85°C

POWER RATING

recommended operating conditions

MIN MAX UNIT

Input voltage, V
Output current, IO (see Note 1) 0 200 mA
Operating virtual junction temperature, TJ (see Note 1) –40 125 °C

§

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

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

§

I

I(min)

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

= V

2.5 7 V

+ V

O(max)

DO(max load)

Ĕ

.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3

TPS7415, TPS7418, TPS7425, TPS7430, TPS7433

TPS7415

2.5 V

V

V

TPS7418

2.8 V

V

V

g( µ )

TPS7425

3.5 V

V

V

V

TPS7430

4.0 V

V

V

TPS7433

4.3 V

V

V

I

V

A

Quiescent current (GND current) (See Note 2)

I

100 mA

V

A

I

200 mA

V

A

Standby current
Input current (EN)

A

TPS7430

Dropout voltage (see Note 4)

mV

TPS7433

FAST-TRANSIENT -RESPONSE USING SMALL OUTPUT CAPACITOR
200-mA LOW-DROPOUT VOLTAGE REGULATORS

SLVS212 – DECEMBER 1999

electrical characteristics over recommended operating free-air temperature range,
V

= V

i

Output voltage (10 µA to 200 mA load)
(see Note 2)

Output voltage line regulation (∆VO/V
(see Notes 2 and 3)

Load regulation 5 mV
Output noise voltage
Output current Limit VO = 0 V 500 750 mA

Thermal shutdown junction temperature 150 °C

High level enable input voltage 2 V
Low level enable input voltage 0.7 V

p

Power supply ripple rejection (see Note 2)

p

NOTES: 2. Minimum IN operating voltage is 2.5 V or V

+ 1 V, I

O(typ)

PARAMETER TEST CONDITIONS TEST CONDITIONS MIN TYP MAX UNIT

3. If VO = 1.5 V then V

4. IN voltage equals VO(Typ) – 100 mV; TPS7430 and TPS7433 dropout limited by input voltage range limitations (i.e., TPS7430 input
voltage needs to drop to 2.9 V for purpose of this test).

= 1 mA, EN = 0 V, CO = 1 µF (unless otherwise noted)

O

TJ = 25°C 1.5
TJ = –40°C to 125°C 1.455 1.545
TJ = 25°C 1.8
TJ = –40°C to 125°C 1.746 1.854
TJ = 25°C 2.5
TJ = –40°C to 125°C 2.425 2.575
TJ = 25°C 3.0
TJ = –40°C to 125°C 2.910 3.090
TJ = 25°C 3.3
TJ = –40°C to 125°C 3.201 3.399
TJ = 25°C 80
TJ = –40°C to 125°C 115
TJ = 25°C 550
TJ = –40°C to 125°C 850
TJ = 25°C 1300
TJ = –40°C to 125°C 1500

CO = 1 µF,

EN = V

I,

EN = V

I,

CO = 1 µF,

imax

100

*

2.5 V

Ǔ

1000

O

)

= 7 V, V

imax

imin

Line Reg. (mV)

<

< 7

I

<

< 7

I

<

< 7

I

<

< 7

I

<

< 7

I

= 1 mA, EN = 0

O

=

O

=

O

VO + 1 V < VI ≤ 7 V, TJ = 25°C 0.06 %/V

BW = 300 Hz to 50 kHz,
TJ = 25°C

2.5 V < VI < 7 V,
TJ = 25°C

2.5 V < VI < 7 V,
TJ = –40°C to 125°C

EN = 0 V –1 1
EN = V
f = 100 Hz,

TJ = 25°C
IO = 200 mA, TJ = 25°C 180
IO = 200 mA, TJ = –40°C to 125°C 350
IO = 200 mA, TJ = 25°C 170
IO = 200 mA, TJ = –40°C to 125°C 315

O(typ)

= 2.5 V:

+ǒ%ńVǓ

, EN = 0

, EN = 0

I

+ 1 V, whichever is greater. Maximum IN voltage 7 V.

ǒ

V

V

O

190 µVrms

1 µA

3 µA

–1 1

55 dB

µ

µ

µ

µ

If VO ≥ 2.5 V then V

4

= 7 V, V

imax

imin

Line Reg. (mV)

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

= VO + 1 V:

+ǒ%ńVǓ

ǒ

V

imax

*ǒVO)

V

O

100

1V

Ǔ

Ǔ

1000

VOOutput voltage

TPS7415, TPS7418, TPS7425, TPS7430, TPS7433

FAST-TRANSIENT -RESPONSE USING SMALL OUTPUT CAPACITOR

200-mA LOW-DROPOUT VOLTAGE REGULATORS

SLVS212 – DECEMBER 1999

Table of Graphs

FIGURE

p

Ground current vs Junction temperature 7, 8
Power supply ripple rejection vs Frequency 12
Output noise vs Frequency 9

Z

o

V

DO

Output impedance vs Frequency 10
Dropout voltage vs Junction temperature 11
Line transient response 13, 15
Load transient response 14, 16
Output voltage vs Time 17
(Stability) Equivalent series resistance (ESR) vs Output current 19

TYPICAL CHARACTERISTICS

vs Output current 2, 3, 4
vs Junction temperature 5, 6

1.810

1.805

1.800

– Output Voltage – V

O

V

1.795

TPS7418

OUTPUT VOLTAGE

vs

OUTPUT CURRENT

VI = 2.8 V
TA = 25°C

0 200

50 100

IO – Output Current – mA

150 250

Figure 2

3.310

3.305

– Output Voltage – V

O

V

3.300

TPS7433

OUTPUT VOLTAGE

vs

OUTPUT CURRENT

VI = 4.3 V
TA = 25°C

0 200

50 100 150 250

IO – Output Current – mA

Figure 3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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