MC34063
DC/DC CONVERTER CONTROL CIRCUIT

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Rating Symbol Value Unit
Power Supply Voltage VCC 40 Vdc
Comparator Input Voltage Range VIR –0.3 to +40 Vdc
Switch Collector Voltage VC(switch) 40 Vdc
Switch Emitter Voltage (VPin 1 = 40 V) VE(switch) 40 Vdc
Switch Collector to Emitter Voltage VCE(switch) 40 Vdc
Driver Collector Voltage VC(driver) 40 Vdc
Driver Collector Current (Note 1.) IC(driver) 100 mA
Switch Current ISW 1.5 A

Power Dissipation and Thermal Characteristics

Plastic Package, P, P1 Suffix TA = 25℃

Thermal Resistance

SOIC Package, D Suffix TA = 25℃

Thermal Resistance

PD

RqJA

PD

RqJA

1.25

100

625

160

W

℃/W

W

℃/W

Operating Junction Temperature TJ +150

Operating Ambient Temperature Range

MC34063A

MC33063AV

MC33063A

TA

0 to +70

–40 to +125

–40 to +85

Storage Temperature Range Tstg –65 to +150

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Datasheet

Size: 126.92KB
Page: 9
PDF: MC34063.pdf
  • Description:
    DC/DC CONVERTER CONTROL CIRCUIT
  • MFG:
    AIC [Analog Intergrations Corporation]
 

Abstract


MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-00
ANALOG INTEGRATIONS CORPORATION www.analog.com.tw
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: (8863)577-2500 FAX:(8863)577-2510 1
! FEATURES
" 3V to 30V Input Voltage Operation.
" Internal 1.6A Peak Current Switch.
" Internal ±1.8% Reference.
" Low Quiescent Current at 1.6mA.
" Frequency Operation from 100Hz to 100KHz.
" Current Limiting.

! APPLICATIONS
" Saver for Cellular phones
" DC-DC Converter Module


! DESCRIPTION
The MC34063A by Analog Integrations
Corporation, an improved second source over the
industrial standard MC34063A, is a monolithic
control circuit containing the primary functions
required for DC/DC converters. The device
consists of an internal temperature compensated
reference, comparator, controlled duty cycle
oscillator with an active current limit circuit, driver
and high current output switch. This device is
specifically designed to be incorporated in step-
down, step-up and voltage-inverting applications
with a minimum number of external components.
The ±1.8% internal reference and low quiescent
current of 1.6mA are among the improvements of
the device over the competition.

! TYPICAL APPLICATION CIRCUIT

MC34063A
IPK
8
7
6
5 4
3
2
1
FB
VCC
DRI SC
SE
TC
GND
VIN
L
200?H
RB
33K
C1
D1
1N5819
CT
470pF
RA
5.6K
*RS
VOUT
8.6V SAVER
*:Io=0.3/RS
+
100?F
220
?
F
CO
+
Saver Circuit for Cellular Phone


! ORDERING INFORMATION

MC34063A XX
ORDER NUMBER
MC34063ACN
(PLASTIC DIP)
PIN CONFIGURATION
MC34063ACS
(PLASTIC SO)
TOP VIEW
VCC
DRI
SE
TC
GND
IPK
FB
SC
1
3
4
2
8
6
5
7
PACKAGE TYPE
N: PLASTIC DIP
S: SMALL OUTLINE
TEMPERATURE
C: 0°C~+70°C

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