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| IL34063A_11 Datasheet, PDF (1/10 Pages) IK Semicon Co., Ltd – DC-TO-DC CONVERTER CONTROL CIRCUITS | |||
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TECHNI CAL DATA
DC-TO-DC CONVERTER CONTROL CIRCUITS
IL34063A
The IL34063A is a monolithic control circuit containing the primary functions required for DC-to-DC
converters. These devices consist of an internal temperature compensated reference, comparator, controlled
duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series
was specifically designed to be incorporated in Step-Down and Step-Up and Voltage-Inverting applications
with a minimum number of external components.
FEATURES
FUNCTIONAL BLOCK DIAGRAM
⢠Operation from 3.0 V to 40 V Input
⢠Low Standby Current
⢠Current Limiting
⢠Output Switch Current to 1.5 A
⢠Output Voltage Adjustable
⢠Frequency Operation to 100 kHz
⢠Precision 2% Reference
MAXIMUM RATINGS
Rating
Power Supply Voltage
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage (Vpin 1 = 40 V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
Driver Collector Current (Note 1)
Switch Current
Power Dissipation and Thermal Characteristics
Ceramic Package, U Suffix TA = +25°C
Thermal Resistance
Plastic Package, P Suffix TA = +25°C
Thermal Resistance
SOIC Package, D Suffix TA = +25°C
Thermal Resistance
Operating Junction Temperature
Operating Ambient Temperature Range
Storage Temperature Range
Symbol
VCC
VIR
VC(switch)
VE(switch)
VCE(switch)
IC(driver)
IC(driver)
ISW
PD
RθJA
PD
RθJA
PD
RθJA
TJ
TA
Tstg
Value
Unit
40
Vdc
-0.3 to +40 Vdc
40
Vdc
40
Vdc
40
Vdc
40
Vdc
100
mA
1.5
A
1.25
100
1.25
100
625
160
+150
0 to +70
-65to+150
W
°C/W
W
°C/W
mW °C/W
°C
°C
°C
* Stresses beyond those listed under âabsolute maximum ratingsâ may cause permanent damage to the device.
These are stress ratings only and functional operation of the device at these or any other conditions beyond those
indicated under ârecommended operating conditionsâ is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2011, February, Rev. 02
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