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MC34063A Schematic ( PDF Datasheet ) - HTC

Teilenummer MC34063A
Beschreibung DC-DC Converter Control Circuits
Hersteller HTC
Logo HTC Logo 




Gesamt 11 Seiten
MC34063A Datasheet, Funktion
DC-DC Converter Control Circuits
MC34063A
FEATURES
OUTPUT SWITCH CURRENT IN EXCESS OF 1.5A
2% REFERENCE ACCURACY
LOW QUIESCENT CURRENT:2.5mA(TYP.)
OPERATING FROM 3V TO 40V
FREQUENCY OPERATION TO 100KHz
ACTIVE CURRENT LIMITING
MOISTURE SENSITIVITY LEVEL 3
MC34063AG is Halogen Free products
8 SOP/ 8 DIP PIN Configulation
SOP-8 PKG
DIP-8 PKG
APPLICATION
Battery Chargers
NICs / Switches / Hubs
ADSL Modems
Negative Voltage Power Supplies
Switch
Collector
1
Switch
Emitter
2
Timing
Capacitor
3
Ground 4
Driver
8 Collector
7 Ipk Sense
6 Vcc
5
Comparator
Inverting
Input
DESCRIPTION
ORDERING INFORMATION
Device
Package
MC34063AD
MC34063AGD
SOP-8
MC34063AN
DIP-8
The MC34063A series is a monolithic control circuit delivering the main functions for DC-DC voltage
converting.
The device contains an intermal 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 devices series is designed for
Step-Down, Step-Up and Voltage-lnverting applications.
May. 2009 - Rev. 1.2
1
HTC






MC34063A Datasheet, Funktion
DC-DC Converter Control Circuits
TYPICAL APPLICATION CIRCUIT
Step-Up Converter
L1
170μH
R3 8
1
DRC
SWC
180Ω
7
2
Ipk SWE
Rsc 6
3
Vcc TC
0.22Ω
54
VIN
12V
C2 +
CII
GND
100㎌ MC34063A
R1 R2
2.2KΩ
44KΩ
Step-Down Converter
MC34063A
C3
1.5㎋
D1
BYV10-40
VOUT
25V/175
+C1
330㎌
Rsc
0.33Ω
8
DRC
7
Ipk
6
Vcc
1
SWC
2
SWE
3
TC
BYV10-40
D1
54
L
VIN
25V
C2 +
CII
GND
C3
470㎊
220μH
100㎌ MC34063A
R1
1.2KΩ
R2
3.5KΩ
+C1
470㎌
VOUT
5V/0.5A
May. 2009 - Rev. 1.2
6
HTC

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