IL34063A
DC-TO-DC CONVERTER CONTROL CIRCUITS
The IL34063Ais 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
Symbol
VCC
Value
40
Unit
Vdc
Vdc
Power Supply Voltage
Comparator Input Voltage Range
VIR
-0.3 to
+40
40
Switch Collector Voltage
VC(switch)
VE(switch)
VCE(switch)
IC(driver)
IC(driver)
ISW
Vdc
Vdc
Vdc
Vdc
mA
A
Switch Emitter Voltage (Vpin 1 = 40 V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
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
PD
1.25
100
1.25
100
625
160
W
°C/W
W
RθJA
PD
Plastic Package, P Suffix TA = +25°C
Thermal Resistance
°C/W
mW
°C/W
RθJA
PD
SOIC Package, D Suffix TA = +25°C
Thermal Resistance
RθJA
Operating Junction Temperature
Operating Ambient Temperature Range
Storage Temperature Range
TJ
+150
°C
°C
TA
Tstg
0 to +70
-65to+150 °C
1
INTEGRAL [ INTEGRAL CORP. ]
