SG1526中文资料Voltage Mode PWM, 500Khz - 8V to 35V Operation -55°C to 125°C数据手册Microchip规格书

描述 Description

The SG1526 is a high-performance monolithic pulse width modulator circuit designed for fixed-frequency switching regulators and other power control applications. Included in an 18-pin dual-in-line package are a temperature compensated voltage reference, sawtooth oscillator, error amplifier, pulse width modulator, pulse metering and steering logic, and two low impedance power drivers. Also included are protective features such as soft-start and under voltage lockout, digital current limiting, double pulseinhibit, a data latch for single pulse metering, adjustable deadtime, and provision for symmetry correction inputs. For ease of interface, all digital control ports are TTL and B-series CMOS compatible. Active LOW logic design allows wired-OR connections for maximum flexibility. 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 SG1526 is characterized for operation over the full military ambientjunction temperature range of -55°C to +150°C. The SG2526 is characterized for operation from -25°C to +150°C, and the SG3526 is characterized for operation from 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

SG1526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SG1526DC-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。