TPS62401DRCRG4 datasheet(7/39 Pages) TI

Part #	TPS62401DRCRG4

Description	2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package

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Manufacturer	TI [Texas Instruments]

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PARAMETER MEASUREMENT INFORMATION

SW1

FB1

SW2

ADJ2

DEF_1

VIN2.5V – 6V

VIN

EN_1

EN_2

MODE/

DATA

TPS62400

GND

L

C

10 F

IN

m

R11

R12

1

2.2 H

LSP4018

m

VOUT1

C

2x10 F

GRM21BR61A106K

OUT1

m

VOUT2

R21

R22

L2

C ff2

33pF

2.2 H

LSP4018

m

C

2x10 F

GRM21BR61A106K

OUT2

m

TYPICAL CHARACTERISTICS

TABLE OF GRAPHS AND FIGURES

TPS62400

,, TPS62401

TPS62403

SLVS681C – JUNE 2006 – REVISED DECEMBER 2006

FIGURE NO.

Efficiency TPS62401 VOUT1 = 1.1V

1

Efficiency TPS62401 VOUT1 = 1.575V

2

Efficiency VOUT 2 = 1.8V

3

Efficiency TPS62400 VOUT2 = 3.3V

4

Efficiency

vs VIN

5, 6

DC Output Accuracy VOUT1 = 1.1V

7

DC Output Accuracy VOUT2 = 3.3V

8

DC Output Accuracy VOUT2 = 1.8V

9

DC Output Accuracy VOUT1 1.575V, L = 2.2µH, COUT = 22µF

10

DC Output Accuracy VOUT1 1.575V, L = 3.3µH, COUT = 10µF

11

FOSC

vs VIN

12

Iq for one converter

13

Iq for both converters, not switching

14

RDSON PMOS

vs VIN

15

RDSON NMOS

vs VIN

16

Light Load Output Voltage Ripple in Power Save Mode

17

Output Voltage Ripple in Forced PWM Mode

18

Output Voltage Ripple in PWM Mode

19

Forced PWM/ PFM Mode Transition

20

Load Transient Response PFM/PWM

21

Load Transient Response PWM Operation

22

Line Transient Response

23

Startup Timing One Converter

24

TPS62401 DEF1_pin Function for Output Voltage Selection

25

Typical Operation VIN = 3.6V, VOUT1 = 1.575V, VOUT2 = 1.8V

26

7

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TPS62401DRCRG4 Datasheet(PDF) 7 Page - Texas Instruments

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