L6726A中文资料单相PWM控制器数据手册ST规格书

描述 Description

L6726A 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 1.5V and device supply voltage ranging from 5V to 12V.

L6726A provides simple control loop with transconductance error amplifier. The integrated 0.8V reference allows regulating output voltage with ±1% accuracy over line and temperature variations. Oscillator is internally fixed to 270kHz.

L6726A provides programmable over current protection. Current information is monitored across the Low-Side mosfet RdsON saving the use of expensive and space-consuming sense resistors.

FB disconnection protection prevents excessive and dangerous output voltages in case of floating FB pin.

特性 Features

• LS-LESS start up
• Programmable soft-start
• FB disconnection protection
• Disable function
• SO-8 package
• Sensorless and programmable OCP across Low-side RdsON
• 0.8V internal reference
• Flexible power supply from 5V to 12V
• 1% output voltage accuracy
• Power conversion input as low as 1.5V
• Adjustable output voltage
• Oscillator internally fixed at 270kHz
• High-current integrated drivers

简介

L6726A属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由制造生产的L6726ADC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。