Operates with Secondary–Side PWM

Control

Isolated PWM Command through a Pulse

Transformer

Initial Free-Running Soft-Startup with

Duty-Cycle Clamping

Up to 400-kHz Synchronizable Switching

Frequency

High-Current FET Drive (1.5-A Sink, 0.75-A

Source)

Multi-Mode Overcurrent Protection with

Restart, Latching, or Cycle-by-Cycle

Current Limiting

Programmable Volt-Second Clamp for

Transformer Reset

Undervoltage Lockout with 2-V Hysteresis

Low-Current Startup with Optional

Disconnect

Programmable Overvoltage and

Undervoltage Protection

8–pin Version Also Available (UCC3960)