MIC2177 Просмотр технического описания (PDF) - Micrel

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Компоненты Описание

производитель

MIC2177

2.5A Synchronous Buck Regulator

Micrel 

Micrel, Inc.

PWM-Mode Functional Diagram

VIN

4.5V to 16.5V

CIN

VIN 1 2 9

MIC2177

IS E N S E

Amp.

100m

P-channel

100m

N-channel

Stop

S Y NC

18

200kHz

Oscillator

Corrective

Ramp

Reset

Pulse

COMP

CC

RC 13

R

Q

S

PWM

Comp.

Error

Amp.

VR EF1.245V

MIC2177 [Adjustable] PWM-Mode Signal Path

S G N D 14 15 16 17

VOUT

=

1.245

(

R1

R2

+

1)

SW

3

8

L1

IL1

D

COU T

VOU T

PGND

4

5

6

7

R1

FB

12

R2

VS W

Reset

Pulse

I LOAD

IL1

IL1

Error Amp.

Output

ISENSE

April 2008

11

M9999-042108

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