SG2526B中文资料Voltage Mode PWM, 500Khz - 8V to 35V Operation -25°C to 85°C数据手册Microchip规格书

描述 Description

The SG1526B is a high-performance pulse width modulator for switching power supplies which offers improved functional and electrical characteristics over the industry-standard SG1526. A direct pin-for-pin replacement for the earlier device with all its features, it incorporates the following enhancements: a bandgap reference circuit for improved regulation and drift characteristics, improved under voltage lockout, lower temperature coefficients on oscillator frequency and current-sense threshold, tighter tolerance on soft start time, much faster SHUTDOWN response, improved double-pulse suppression logic for higher speed operation, and an improved output driver design with low shoot-through current, and faster rise and fall times. This versatile device can be used to implement single-ended or push-pull switching regulators of either polarity, both transformer-less and transformer-coupled. The SG1526B is specified for operation over the full military ambient temperature range of -55°C to 150°C. The SG2526B is characterized for the industrial range of -25°C to 150°C, and the SG3526B is designed for the commercial range of 0°C to 125°C.

特性 Features

8V to 35V Operation
5V Reference Trimmed to ±1%
1Hz to 350kHz Oscillator Range
Dual 100mA Source/Sink Outputs
Digital Current Limiting
Double Pulse Suppression
Programmable Deadtime
Undervoltage Lockout
Single Pulse Metering
Programmable Soft-start
Wide Current Limit Common Mode
Range TTL/CMOS Compatible Logic
Ports Symmetry Correction Capability Guaranteed 6 Unit Synchronization

简介

SG2526B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SG2526BDC-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。