IL494

w emitter or emitter-follower output capability. Push-pull or single-ended 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 h S aincorporates on a single monolithic chip all the functions The IL494 t required in athe construction of a pulse-width-modulation control circuit. Designed primarily for power supply control, the IL494 contains an onD . regulator, two error amplifiers, adjustable oscillator, deadchip 5-volt wcontrol comparator, pulse-steering flip-flop, and output-control time w circuitry. The uncommitted output transistors provide either commonoutput 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. PWM Control ee Circuit U 4 t m o .c TECHNICAL DATA IL494 FUNCTION TABLE Output Control Grounded At Vref Output Function Single-ended or Parallel Output Normal Push-Pull Operation w w w t a .D S a e h U 4 t e ORDERING INFORMATION IL494N Plastic IL494D SOIC TA = -20°C to 85° C for all packages .c m o PIN ASSIGNMENT LOGIC DIAGRAM w w w .D a S a t e e h U 4 t m o .c 1 IL494 MAXIMUM RATINGS Symbol VCC VI VO Tstg Supply Voltage Amplifier Input Vo...