AN667 Description
A precise bandgap reference is internally built to ensure a good regulation. The undervoltage parator with hysteresis and the very-low supply current, before the turn-on threshold is reached, allows to minimize the startup and supply circuitry. Supply Block Diagram +Vi lows the feedback for the boosted output DC voltage regulation.
AN667 Key Features
- Undervoltage lockout with hysteresis and micropower start-up
- Stable error amplifier
- Output overvoltage protection
- Transition Mode Operating
- Zero Current and coil Voltage detection
- Internal start oscillator. Device Blocks Description Supply Block (see fig. 2): A precise bandgap reference is internall
AN667 Applications
- Undervoltage lockout with hysteresis and micropower start-up