en

Cart

Your cart is empty.

IC reference design search

STMicroelectronics L6738

Single-phase PWM controller with light-load efficiency optimization

Overview

TopologyBuck Converter
Input voltage6 V
Output 13.5 V / 8 A
IC revision2

Description

The L6738 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 the management of conversions with power input VINas low as 1.5 V and the device supply voltage ranging from 5 V to 12 V bus.

The L6738 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 the generation of output voltages with ±0.5% accuracy over line and temperature variations.

The oscillator is programmable up to 600 kHz.

The L6738 provides a programmable dual-level overcurrent protection and overvoltage protection. The current information is monitored across the inductor DCR.

The L6738 is available in a VFQFPN 16 3x3 mm package.

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

Typical applications

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

Products