L6727

L6727 Single phase PWM controller Feature ■ Flexible power supply from 5 V to 12 V ■ Power conversion input as low as 1.5 V ■ 1 % output voltage accuracy ■ High-current integrated drivers ■ Adjustable output voltage ■ 0.8 V internal reference ■ Simple voltage mode control loop ■ Sensorless and programmable OCP across Low-side RdsON ■ Oscillator internally fixed at 300 kHz ■ Internal Soft-start ■ LS-LESS to manage pre-bias start-up ■ Disable function ■ OV / UV protection ■ FB disconnection protection ■ SO-8 package Applications ■ Subsystem power supply (MCH, IOCH, PCI...) ■ Memory and termination supply ■ CPU and DSP power supply ■ Distributed power supply ■ General DC / DC converters SO-8 Description L6727 is a single-phase step-down controller with integrated high-current drivers that provides complete control logic, protections and reference voltage to realize in an easy and simple way general DC-DC converters by using a compact SO-8 package. Device flexibility allows managing conversions with power input VIN as low as 1.5 V and device supply voltage in the range of 5 V to 12 V. L6727 provides simple control loop with voltagemode error-amplifier. The integrated 0.8 V reference allows regulating output voltages with ±1 % accuracy over line and temperature variations. Oscillator is internally fixed to 300 kHz. L6727 provides programmable over current protection as well as over and under voltage protection. Current information is monitored across the low-side MOSFET RdsON s...