SI9114A Description
The Si9114A is a BiC/DMOS current-mode pulse width modulation (PWM) controller IC for high-frequency dc/dc converters. Single-ended topologies (forward and flyback) can be implemented at frequencies up to 1 MHz. The oscillator has an internal divide-by-two that limits the duty ratio to 50%.
SI9114A Key Features
- + 2V VREF 3 Ref Gen 4.6 V 7 20 mA +
- 1.25 V -VIN Substrate 20 mA VCC 14 Q 1
- + 0.2 V 9.2 V Undervoltage Lockout S R 2 SHUTDOWN VCC R S 12 DRIVER OUTPUT 11 -VIN Q Enable