TECHNICAL DATA
IL34063A
DC-TO-DC CONVERTER CONTROL CIRCUITS
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
Symbol
VCC
Value
40
Unit
Vdc
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage (Vpin 1 = 40 V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
VIR
-0.3 to +40 Vdc
VC(switch)
VE(switch)
VCE(switch)
IC(driver)
IC(driver)
ISW
40
Vdc
Vdc
Vdc
Vdc
mA
A
40
40
40
Driver Collector Current (Note 1)
Switch Current
100
1.5
Power Dissipation and Thermal Characteristics
Ceramic Package, U Suffix TA = +25°C
Thermal Resistance
Plastic Package, P Suffix TA = +25°C
Thermal Resistance
PD
RθJA
PD
RθJA
PD
RθJA
TJ
1.25
100
1.25
100
625
160
W
°C/W
W
°C/W
mW °C/W
SOIC Package, D Suffix TA = +25°C
Thermal Resistance
Operating Junction Temperature
Operating Ambient Temperature Range
Storage Temperature Range
+150
0 to +70
-65to+150 °C
°C
°C
TA
Tstg
* Stresses beyond those listed under “absolute maximum ratings” 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 “recommended operating conditions” is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2011, February, Rev. 02
IKSEMICON [ IK SEMICON CO., LTD ]
