Description
The L6738A is a single-phase step-down controller with integrated high-current drivers that provides complete control logic and protection to realize a DC-DC converter. The device flexibility allows to manage conversions with power input VIN as low as 1.5V and the device supply voltage ranging from 5 V to 12 V bus. The L6738A features a proprietary algorithm that allows Light-Load efficiency optimization, boosting efficiency without compromising the output voltage ripple. The integrated 0.8 V reference allows generation of output voltages with ±0.5% accuracy over line and temperature variations. The oscillator is programmable up to 600 kHz. The L6738A provides a programmable overcurrent protection and overvoltage protection. The current information is monitored across the inductor DCR. The L6738A is available in a VFQFPN 16 3x3 mm

Features
■ Flexible power supply from 5 V to 12 V bus
■ Power conversion input as low as 1.5 V
■ Light-load efficiency optimization
■ Embedded bootstrap diode
■ VIN detector
■ 0.8 V internal reference
■ 0.5% output voltage accuracy
■ Remote GND recovery
■ High-current integrated drivers
■ Sensorless and programmable precise-OC sense across Inductor DCR
■ OV protection
■ Programmable oscillator up to 600 kHz
■ LS-less to manage pre-bias startup
■ Adjustable output voltage
■ Disable function
■ Internal soft-start
■ VFQFPN 16 3x3 mm package

Applications
■ Memory and termination supply
■ Subsystem power supply (MCH, IOCH, PCI)
■ CPU and DSP power supply
■ Distributed power supply
■ General DC-DC converter