L6668 Description
L6668 is a current-mode primary controller IC, designed to build single-ended converters. The IC drives the system at fixed frequency at heavy load and an improved Standby function causes a smooth frequency reduction as the load is progressively reduced. At very light load the device enters a special operating mode (burst-mode with fixed, externally programmed peak current) that, in addition to the on-board...
L6668 Key Features
- ON-BOARD HIGH-VOLTAGE START-UP
- IMPROVED STANDBY FUNCTION
- LOW QUIESCENT CURRENT (< 2 mA)
- SLOPE PENSATION
- PULSE-BY-PULSE & HICCUP-MODE OCP
- INTERFACE WITH PFC CONTROLLER
- DISABLE FUNCTION (ON/OFF CONTROL)
- LATCHED DISABLE FOR OVP/OTP FUNCTION
- PROGRAMMABLE SOFT-START
- 2% PRECISION REFERENCE VOLTAGE EXTERNALLY AVAILABLE