SG3524B中文资料PWM Controller Voltage Mode +/-1% Ref - pulse width modulator 0 °C to 70 °C数据手册Microchip规格书

描述 Description

The SG1524B is a pulse width modulator for switching power supplies that features improved performance over industry standards like the SG1524. A direct pin-for-pin replacement for the earlier device, it combines advanced processing techniques and circuit design to provide improved reference accuracy, and extended common mode range at the error amplifier and current limit inputs. A DC-coupled flip-flop eliminates triggering and glitch problems, and a PWM data latch prevents edge oscillations. The circuit incorporates true digital shutdown for high speed response, while an under voltage lockout circuit prevents spurious outputs when the supply voltage is too low for stable operation. Full double-pulse suppression logic insures alternating output pulses when the Shutdown pin is used for pulse-by-pulse current limiting. The SG1524B is specified for operation over the full military ambient temperature range of -55°C to 125°C. The SG2524B is characterized for the industrial range of -25°C to 85°C, and the SG3524B is designed for the commercial range of 0°C to 70°C.

特性 Features

• 7V to 40V Operation
• 5V Reference Trimmed to 1%
• 100Hz to 400kHz Oscillator Range
• Excellent External Sync Capability
• Dual 100 mA Output Transistors
• Wide Current Limit Common Mode Range DC-Coupled Toggle Flip-flop
• PWM Data Latch -Undervoltage Lockout
• Full Double-pulse Suppression Logic
• Full Double-pulse Suppression Logic
• 60V Output Collectors

简介

SG3524B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SG3524BDC-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。