MC34063A 查看數據表（PDF） - Wing Shing International Group

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MC34063A

DC-TO-DC Converter Control Circuits

Wing Shing International Group 

MC34063A

SCHEMATIC DIAGRAM

DC-TO-DC Converter Control Circuits

8

Drive

Collector

7

Ipk

Sense

SQ

Q2

R

Q1

100

Ipk

Oscillator GT

1

Switch

Collector

2

Switch

Emitter

6

VCC

5

Comparator

Inverting

Input

Comparator

1,25V

Reference

Regulator

3

Timing

Capacitor

4

GND

(Bottom View)

Figure 1. Representative Schematic Diagram

ABSOLUTE MAXIMUM RATINGS

Parameter

Power Supply Voltage

Comparator Input Voltage Range

Switch Collector Voltage

Switch Emitter Voltage (VPin1 = 40 V)

Switch Collector to Emitter Voltage

Driver Collector Voltage

Driver Collector Current (Note 1)

Switch Current

Power Dissipation, TA = 25°C D Package

P Package

D Package

Thermal Resistance, TA = 25°C

P Package

Operating Junction Temperature

Operating Ambient Temperature Range

Storage Temperature Range

Symbol

VCC

VIR

VC(switch)

VE(switch)

VCE(switch)

VC(driver)

IC(driver)

ISW

PD

RθJA

TJ

TA

Tstg

Value

40

−0.3 to +40

40

40

40

40

100

1.5

625

1.25

160

100

+150

0 to +70

−65 to +150

Unit

V

V

V

V

V

V

mA

A

mW

W

°C/W

°C

°C

°C

2

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