MC34063AQ8 查看數據表（PDF） - Cystech Electonics Corp.

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MC34063AQ8

DC-to-DC Converter Control Circuit

Cystech Electonics Corp. 

Pin Connections

8765

1 2 34

CYStech Electronics Corp.

Spec. No. : C501Q8

Issued Date : 2003.03.21

Revised Date :2005.06.02

Page No. : 2/7

Pin1:Switch Collector

Pin2:Switch Emitter

Pin3:Timing Capacitor

Pin4:Gnd

Pin5:Comparator Inverting Input

Pin6:Vcc

Pin7:Ipk Sense

Pin8:Driver Collector

Absolute Maxium Rating

Supply Voltage ....................................................................................................................................... 40 V

Comparator Input Voltage Range ........................................................................................... -0.3 V ~ 40 V

Switch Collector Voltage ....................................................................................................................... 40 V

Switch Emitter Voltage .......................................................................................................................... 40 V

Switch Collector to Emitter Voltage ...................................................................................................... 40 V

Driver Collector Voltage ........................................................................................................................ 40 V

Switch Current ....................................................................................................................................... 1.6A

Power Dissipation DIP Package Ta=25°C........................................................................................ 625 mW

Thermal Resistance Junction to Air............................................................................................. 160 °C / W

Operating Junction Temperature......................................................................................................... 125 °C

Operating Ambient Temperature Range......................................................................................... 0 ~ 70 °C

Storage Temperature Range.................................................................................................. -40 °C ~ 125 °C

Electrical Characteristics (Vcc=5V,Ta=25°C, unless otherwise specified)

Parameter

Oscillator

Charging Current

Discharge Current

Voltage Amplitude

Discharge to Charge Current Ratio

Current Limit Sense Voltage

Output Switch

Saturation Voltage, Darlington

Connection

Saturation Voltage

DC Current Gain

Collector Off-State Current

Comparator

Threshold Voltage

Threshold Voltage

Threshold Voltage Line Regulation

Input Bias Current

Supply Current

Test Condition

Symbol Min. Typ. Max. Unit

5.0V≤VCC≤40V

5.0V≤VCC≤40V

Pin3

VIPK(Sense) =VCC

IChg=Idischg

Ichg

Idischg

VOSC

IDischg/Ichg

VIPK(Sence)

24 35 42 uA

140 220 260 uA

- 0.6 - V

5.2 6.5 7.5

250 300 350 mV

ISW=1.0A,

VC(Driver)=VC(Switch)

ISW=1.0A, IC(Driver)=50mA

(Forced β ≈ 20)

ISW=1.0A, VCE=5.0V

VCE=40V

VCE(Sat)

VCE(Sat)

hFE

ICC(Off)

- 1.0 1.3 V

- 0.4 0.7 V

50 75 - V

- 0.01 100 uA

0°C≤Ta≤70°C

3.0V≤VCC≤40V

VIN=0V

VIPK(Sence)=VCC

VPin5>VFB,

5.0V≤VCC≤40V

CT=0.0001uF,Pin2=Gnd

Remaining pins open

VFB

Regline

IIB

1.227 1.250 1.273

1.210 - 1.29

V

- 1.5 6 mV

- -20 -400 nA

ICC

- 1.6 3 mA

MC34063AQ8

CYStek Product Specification

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