onsemi TL594CDG

Precision Switchmode Pulse Width Modulation Control Circuit | IC REG CTRLR BCK/PSH-PULL 16SOIC

VOLTAGE-MODE BIPOLAR DUAL Surface Mount DC-DC Controller IC 100ns -40C~85C TA 300kHz 40V

Voltage Mode PWM Controller 500mA 16-Pin SOIC Rail

Off-Line Controllers 40kHz 200mA PWM w/48% Duty Cycle Max

IC REG CTRLR BCK/PSH-PULL 16SOIC

IC REG CTRLR FLYBK PWM VM 16SOIC

The TL594 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control this device offers the systems engineer the flexibility to tailor the power-supply control circuitry to a specific application. The TL594 contains two error amplifiers an on-chip adjustable oscillator a dead-time control (DTC) comparator a pulse-steering control flip-flop a 5-V regulator with a precision of 1.5% an undervoltage lockout control circuit and output control circuitry. The error amplifiers have a common-mode voltage range of -0.3 V to VCC-2 V. The DTC comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT or it can be used to drive the common circuitry in synchronous multiple-rail power supplies. The uncommitted output transistors provide either common-emitter or emitter-follower output capability. Each device provides for push-pull or single-ended output operation with selection by means of the output-control function. The architecture of these devices prohibits the possibility of either output being pulsed twice during push-pull operation. The undervoltage lockout control circuit locks the outputs off until the internal circuitry is operational. The TL594CD CN CDTB are characterized for operation from -40C to 85C.