RR0816P-243-D 데이터 시트보기 (PDF) - Fujitsu

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RR0816P-243-D

2-ch DC/DC Converter IC with Overcurrent Protection

Fujitsu 

MB39A104

■ BLOCK DIAGRAM

−INE1 10 VREF

10 µA

CS1 11

1.24 V

FB1 9

Error

Amp1

++

L priority

DTC1 6

L priority

PWM

++ Comp.1

CH1

Drive1

P-ch

IO = 200 mA

at VCCO = 12 V

Current

Protection

Logic

1 VCCO

3 OUT1

4 VS1

5 ILIM1

−INE2 15 VREF

10 µA

CS2 14

FB2 16

DTC2 19

1.24 V

Error

Amp2

++

L priority

H: at SCP

H priority

SCP

Comp.

L priority

PWM

++ Comp.2

CH2

Drive2

P-ch

IO = 200 mA

at VCCO = 12 V

Current

Protection

Logic

22 OUT2

21 VS2

20 ILIM2

CSCP 8

(3.1 V)

SCP

Logic

UVLO

H:UVLO

release

OSC

12 13

RT CT

2.5 V

1.5 V

bias

Accuracy

±1%

5.0 V

17

VREF

H: at OCP

VCC − 5 V

VH

Bias

Voltage

Error Amp Power Supply

Error Amp Referennce

1.24 V

Power

VREF VR1 ON/OFF

CTL

18

GND

2 VH

23 GNDO

7 VCC

24 CTL

4

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