TPS62402DRCR datasheet(7/43 Pages) TI

Part #	TPS62402DRCR

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

TPS62402, TPS62403

SLVS681D – JUNE 2006 – REVISED FEBRUARY 2007

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 TPS62402

5

Efficiency TPS62403

6

Efficiency

vs VIN

7,8

DC Output Accuracy VOUT1 = 1.1V

9

DC Output Accuracy VOUT2 = 3.3V

10

DC Output Accuracy VOUT2 = 1.8V

11

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

12

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

13

FOSC

vs VIN

14

Iq for one converter

15

Iq for both converters, not switching

16

RDSON PMOS

vs VIN

17

RDSON NMOS

vs VIN

18

Light Load Output Voltage Ripple in Power Save Mode

19

Output Voltage Ripple in Forced PWM Mode

20

Output Voltage Ripple in PWM Mode

21

Forced PWM/ PFM Mode Transition

22

Load Transient Response PFM/PWM

23

Load Transient Response PWM Operation

24

Line Transient Response

25

Startup Timing One Converter

26

7

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