描述 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 VINas 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 package.

特性 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

簡介

L6738A屬于集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關(guān)式控制器。由制造生產(chǎn)的L6738ADC-DC 開關(guān)控制器PMIC（電源管理集成電路）DC 到 DC 開關(guān)式控制器是用于高效率電路的穩(wěn)壓 IC，其配置為生成高于（突升或步升）或低于（突降或步降）輸入電源的輸出電源電壓。其他拓?fù)浣Y(jié)構(gòu)可能包括：降壓-升壓、反激、正激、Cuk、SEPIC、全橋、半橋和推挽式。這些器件不同于需要最小電壓并“燒盡”多余電壓的線性穩(wěn)壓器。