TPS2158 datasheet(10/19 Pages) TI

Part #	TPS2158

Description	3.3-V LDO AND DUAL SWITCH FOR USB PERIPHERAL POWER MANAGEMENT

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Manufacturer	TI [Texas Instruments]

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10 / 19 page

TPS2148

TPS2158

SLVS373 – AUGUST 2001

10

www.ti.com

TYPICAL CHARACTERISTICS

Figure 6

SHORT-CIRCUIT CURRENT, SWITCH

ENABLED INTO A SHORT

t – Time – ms

01

2

3

4

56

7

8

9

10

IO(OUT)

(100 mA/div)

VI(EN)

(5 V/div)

Figure 7

VI(LDO_EN)

(5 V/div)

VO(LDO_OUT)

(1 V/div

LDO TURNON DELAY AND RISE TIME

WITH 4.7-

µF LOAD

0

0.4

0.8

1.2

1.6

2

2.4

2.8

3.2

3.6 4.2

t – Time – ms

VI = 5 V

TA = 25°C

CL = 4.7 µF

RL = 13.2 Ω

Figure 8

LINE TRANSIENT RESPONSE

t – Time –

µs

0

100 200 300 400 500 600

700 800 900 1000

∆VO(LDO_OUT)

(0.05 V/div)

TA = 25°C

CL(LDO_OUT) = 4.7 µF

ESR = 1

Ω

IO(LDO_OUT) = 200 mA

5.25 V

VI(VIN)

4.25 V

Figure 9

LOAD TRANSIENT RESPONSE

t – Time –

µs

0

100 200 300 400 500 600

700 800 900 1000

∆VO(LDO_OUT)

(100 mV/div)

TA = 25°C

CL(LDO_OUT) = 4.7 µF

ESR = 1

Ω

IO(LDO_OUT)

(200 mA/div)

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