LTC3407-3 Просмотр технического описания (PDF) - Linear Technology

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LTC3407-3

Dual Synchronous, 1.8V/0.8A and 3.3V/0.8A 2.25MHz Step-Down DC/DC Regulator

Linear Technology 

LTC3407-3

BLOCK DIAGRA

MODE/SYNC 6

REGULATOR 1

VOUT1 1

0.6V +

ITH

R1

EA

VFB –

R3

0.55V

–

UV

UVDET

+

+

OV

OVDET

0.65V

–

SHUTDOWN

SLOPE

COMP

BURST

CLAMP

0.65V

–

EN

SLEEP

+

BURST

S

Q

RS

LATCH

R

Q

SWITCHING

LOGIC

AND

BLANKING

CIRCUIT

–+

ICOMP

ANTI

SHOOT-

THRU

IRCMP

RUN1 2

0.6V REF

OSC

RUN2 9

OSC

VOUT2 10

REGULATOR 2 (IDENTICAL TO REGULATOR 1)

R1 = 240k, R3 = 120k FOR CHANNEL 1

R1 = 270k, R2 = 60k FOR CHANNEL 2

PGOOD1

POR

COUNTER

PGOOD2

VIN

5Ω

4 SW1

11 GND

VIN

3 VIN

8 POR

5 GND

7 SW2

34073 BD

34073fa

6

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