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MC34063E 데이터시트 PDF




ST Microelectronics에서 제조한 전자 부품 MC34063E은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 MC34063E 기능
기능 DC/DC Converter Contolr Circuits
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MC34063E 데이터시트, 핀배열, 회로
( DataSheet : www.DataSheet4U.com )
MC34063A
MC34063E
DC/DC CONVERTER CONTROL CIRCUITS
s OUTPUT SWITCH CURRENT IN EXCESS
OF 1.5A
s 2% REFERENCE ACCURACY
s LOW QUIESCENT CURRENT: 2.5mA (TYP.)
s OPERATING FROM 3V TO 40V
s FREQUENCY OPERATION TO 100KHz
s ACTIVE CURRENT LIMITING
DESCRIPTION
The MC34063A/E series is a monolithic control
circuit delivering the main functions for DC/DC
voltage converting.
The device contains an internal temperature
compensated reference, comparator, duty cycle
controlled oscillator with an active current limit
circuit, driver and high current output switch.
Output voltage is adjustable through two external
resistors with a 2% reference accuracy.
Employing a minimum number of external
components the MC34063A/E devices series is
designed for Step-Down, Step-Up and
Voltage-Inverting applications.
BLOCK DIAGRAM
DIP-8
SO-8
March 2004
www.DataSheet4U.com
1/16
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MC34063E pdf, 반도체, 판매, 대치품
MC34063A/E
TOTAL DEVICE
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
ICC Supply Current
VCC = 5 to 40 V
for MC34063A
CT = 1 nF
for MC34063E
PIN 7 = VCC
VPIN5 >VTH
PIN 2 = GND
Remaining pins open
2.5 4 mA
1.5 4
VSTART-UP Start-Up Voltage (Note 4)
TA = 25°C
for MC34063A
CT = 1 µF, PIN 5 = 0 for MC34063E
2.1
1.5
V
NOTES:
1) Maximum package power dissipation limit must be observed.
2) TLOW = 0°C, THIGH = 70°C (AC and EC series); TLOW = -40°C, THIGH = 85°C (AB series); TLOW = -40°C, THIGH = 125°C (EB series).
3) If Darlington configuration is not used, care must be taken to avoid deep saturation of output switch. The resulting switch-off time may be
adversely affected. In a Darlington configuration the following output driver condition is suggested:
Forced β of output current switch = ICOUTPUT/(ICDRIVER - 1mA*) 10
* Current less due to a built in 1Kanti leakage resistor.
4) Start-up Voltage is the minimum Power Supply Voltage at which the internal oscillator begins to work.
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 1 : Emitter Follower Configuration Output
Saturation Voltage vs Emitter Current
Figure 3 : Common Emitter Configuration Output
Switch Saturation Voltage vs Collector Current
Figure 2 : Output Switch ON-OFF Time vs
Oscillator Timing Capacitor
Figure 4 : Darlington Configuration Collector
Emitter Saturation Voltage (VCEsat) vs Temperat.
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MC34063E 전자부품, 판매, 대치품
Step-Down Converter
MC34063A/E
Printed Demoboard
PIN 1 = VOUT
PIN 2 = GND
PIN 3 = GND
PIN 4 = VIN
Test Condition (VOUT = 5V)
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
ISC
VIN = 15 to 25 V,
VIN = 25 V,
VIN = 25 V,
VIN = 25 V,
VIN = 25 V,
Conditions
IO = 500 mA
IO = 50 to 500 mA
IO = 500 mA
IO = 500 mA
RLOAD = 0.1
Value (Typ.)
5
30
100
80
1.2
Unit
mV
mV
mV
%
A
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관련 데이터시트

부품번호상세설명 및 기능제조사
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DC/DC CONVERTER CONTROL CIRCUIT

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