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IL494A Datasheet(PDF) 1 Page - IK Semicon Co., Ltd

Part # IL494A
Description  PWM Control Circuit
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Manufacturer  IKSEMICON [IK Semicon Co., Ltd]
Direct Link  http://www.iksemi.com/en/index.html
Logo IKSEMICON - IK Semicon Co., Ltd

IL494A Datasheet(HTML) 1 Page - IK Semicon Co., Ltd

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TECHNICAL DATA
IL494A
PWM Control Circuit
The IL494 incorporates on a single monolithic chip all the functions
required in the construction of a pulse-width-modulation control circuit.
Designed primarily for power supply control, the IL494 contains an on-
chip 5-volt regulator, two error amplifiers, adjustable oscillator, dead-
time control comparator, pulse-steering flip-flop, and output-control
circuitry. The uncommitted output transistors provide either common-
emitter or emitter-follower output capability. Push-pull or single-ended
output operation may be selected through the output-control function. The
architecture of the IL494 prohibits the possibility of either output being
pulsed twice during push-pull operation.
ORDERING INFORMATION
IL494N Plastic
IL494D
SOIC
TA = -20°C to 85° C for all packages
• Complete PWM Power Control Circuitry
• Uncommitted Outputs for 200 mA Sink or Source
• Output Control Selects Single-Ended or Push-Pull Operation
• Internal Circuitry Prohibits Double Pulse at Either Output
• Internal Regulator Provides a Stable 5 V Reference Supply
• Variable Dead-Time Provides Control Over Total Range
PIN ASSIGNMENT
FUNCTION TABLE
Output Control
Output Function
Grounded
Single-ended or Parallel Output
At Vref
Normal Push-Pull Operation
LOGIC DIAGRAM
Rev. 00


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