HA17384HRP Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HA17384HRP

High Speed Current Mode PWM Control IC for Switching Power Supply

Hitachi -> Renesas Electronics 

HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP

Block Diagram

COMP 1

FB

(OVP input)

2

CS 3

0.8mA

−

EA

+

6.5V

1

2

Vref

(2.5V)

−

OVP

+ *1

7.0V

2VF

2R

R

1V

UVL1

H

L

VL VH

OVP

latch

RQ

S

5V band

gap

reference

regulator

UVL2

Vref > 4.7V

TSD

sense

OR

160°C

−

CS

+

CS

latch

R

SQ

PWM LOGIC

Vref

NOR

OUT

Totem pole

output circuit

RT/CT 4

Oscillator

+

−

1.2V

2.8 V

Latch set

pulse

8 Vref

7 VIN

34V

6 OUT

5 GND

8.4 mA

Note: 1. Blocks with bold line are not included in HA17384SPS/SRP.

4

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