LTM4703

25

Rev. 0

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Figure 12. 2-Phase 1V, 24A from 3V to 16VIN, 1MHz with Soft-Start, Fast Start-Up and Power Good

1µF

1Ω

105k

100nF

49.9k

220µF

×2

1µF

1Ω

137k

100nF

22µF

×2

1µF

4.99k

49.9k

220µF

×2

22µF

×2

VIN

SVIN

RUN

COMPa

SET

RT

AGND

LTM4703

VOUT

VOSNS

PGSET

GND

CLKOUT

SYNC

PHMODE

INTVCC

fSW = 1MHz

VIN

SVIN

RUN

COMPa

SET

RT

AGND

LTM4703

VOUT

VOSNS

PGSET

GND

SYNC

PHMODE

INTVCC

EXTERNAL

ENABLE

SIGNAL

VIN

3V TO 16V

VOUT

1V, 24A

CH1

CH2

CH2 IS SYNCHRONIZED TO 1MHz VIA THE SYNC PIN. THE RT RESISTOR VALUE MUST SET INTERNAL OSCILLATOR TO <0.8MHz (80% OF 1MHz).

COMPa PINS ARE CONNECTED TOGETHER.

PHMODE CONNECTED TO GND FOR 180°. PHASE SHIFT AT CLKOUT.

SET PINS CAN BE CONNECTED TOGETHER FOR 200µA CURRENT REFERENCE; THIS PROVIDES LOWER 1/f NOISE AND BETTER

CURRENT SHARING.

PG

PG

PINS NOT USED: COMPb, SW, TSENSE+, TSENSE–.

4703 F12

180°

6.8nF

1k

TYPICAL APPLICATION