MB3775(1994) Просмотр технического описания (PDF) - Fujitsu

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MB3775
(Rev.:1994)

Switching Regulator Controller

Fujitsu 

MB3817

s PIN DESCRIPTION

Pin no.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Pin name

CT

RT

+IN

–IN

FB

DTC

CB1

CB2

VCC

OUT

VE

GND

CS

CSCP

CTL

VREF

I/O

Descriptions

— This pin connects to a capacitor for setting the triangular-wave frequency.

— This pin connects to a resistor for setting the triangular-wave frequency.

I Error amplifier non-inverted input pin

I Error amplifier inverted input pin

O Error amplifier output pin

I Dead time control pin

— Boot capacitor connection pin

— Boot capacitor connection pin

— Power supply pin

O Totem-pole type output pin

— Output current setting pin

— Ground pin

— Soft start setting capacitor connection pin

— Short detection setting capacitor connection pin

Power supply control pin

I When this pin is High, IC is inactive state

When this pin is Low, IC is standby state

O Reference voltage output pin

3

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