DESCRIPTION

The Si9102 high-voltage switchmode regulator is a monolithic

BiC/DMOS integrated circuit which contains most of the

components necessary to implement a high-efficiency dc-todc

converter up to 3 watts. It can either be operated from

a low-voltage dc supply, or directly from a 10 to 120 V unregulated

dc power source.

This device may be used with an appropriate transformer to

implement most single-ended isolated power converter

topologies (i.e., flyback and forward).

The Si9102 is available in both standard and lead (Pb)-free

14-pin plastic DIP and 20-pin PLCC packages which are

specified to operate over the industrial temperature range of

- 40 °C to 85 °C.

FEATURES

• 10 to 120 V Input Range

• Current-Mode Control

• On-chip 200 V, 7  MOSFET Switch

• SHUTDOWN and RESET

• High Efficiency Operation (> 80 )

• Internal Start-Up Circuit

• Internal Oscillator (1 MHz)