UC3552 查看數據表（PDF） - Unisonic Technologies

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UC3552

PWM DC-DC CONVERTER WITH INTERNAL SWITCH AND SOFT-START

Unisonic Technologies 

UC3552

„ PIN CONFIGURATION

CMOS IC

„ PIN DESCRIPTION

PIN NO. PIN NAME

1

EO

2

IN

3

SHDN

4

GND

5

SW

6

VDD

7

FREQ

8

SS

I/O

DESCRIPTION

I Compensation pin for Error Amplifier

I Feedback pin with a typical reference voltage of 1.24V

I Shutdown control pin. The device will turn off when SHDN is low

Ground

O Switch pin

Power supply pin

Frequency select pin. Switch oscillator frequency to 640kHz when FREQ is low, and

I 1.3MHz when FREQ is high

I Soft-Start control pin. No soft-start when the pin is left open

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

2 of 7

QW-R502-134.A

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