Datasheet Summary
ą UCC29421, UCC29422, UCC39421, UCC39422 MULTIMODE HIGHĆFREQUENCY PWM CONTROLLER
SLUS246C
- OCTOBER 1999
- REVISED FEBRUARY 2005
D Operation Down to an Input
Voltage of 1.8 V simplified schematic block diagram and application circuit
D High Efficiency Boost, SEPIC or
Flyback (Buck-Boost) Topologies
D Drives External FETs for
High-Current Applications
D Up to 2-MHz Oscillator D Synchronizable Fixed Frequency
Operation
D High-Efficiency Low-Power Mode D High-Efficiency at Very Low-Power with Programmable Variable Frequency Mode
D Pulse-by-Pulse Current Limit D 5-µA Supply Current in Shutdown D 150-µA Supply Current in Sleep
Mode
D Selectable NMOS or PMOS
Rectification
D Built-In Power-On...