SG3844Y

SG3844Y

  • 厂商:

    MICROSEMI(美高森美)

  • 封装:

  • 描述:

    SG3844Y - CURRENT MODE PWM CONTROLLER - Microsemi Corporation

  • 详情介绍
  • 数据手册
  • 价格&库存
SG3844Y 数据手册
L I N D O C # : 1844 SG1844/SG1845 Series CURRENT MODE PWM CONTROLLER T HE I NFINITE P OWER OF I NNOVATION P RODUCTION D ATA S HEET DESCRIPTION The SG1844/45 family of control ICs provides all the necessary features to implement off-line fixed frequency, current-mode switching power supplies with a minimum number of external components. Current-mode architecture demonstrates improved line regulation, improved load regulation, pulse-bypulse current limiting and inherent protection of the power supply output switch. The bandgap reference is trimmed to ±1% over temperature. Oscillator discharge current is trimmed to less than ±10%. The SG1844/45 has undervoltage lockout, current-limiting circuitry and start-up current of less than 1mA. The totem-pole output is optimized to drive the gate of a power MOSFET. The output is low in the off state to provide direct interface to an N-channel device. Both operate up to a maximum duty cycle range of zero to
SG3844Y
物料型号: - SG1844M, SG1844N, SG1844DM, SG1844D, SG2844M, SG2844N, SG2844DM, SG2844D, SG3844M, SG3844N, SG3844DM, SG3844D, SG1845M, SG1845N, SG1845DM, SG1845D等。

器件简介: - SG1844/45系列控制IC提供实现离线固定频率、电流模式开关电源所需的所有功能,最少的外部组件数量。电流模式架构展示了改善的线路调节、负载调节、逐脉冲电流限制和对电源输出开关的固有保护。

引脚分配: - 提供了不同封装(M、Y、DM、D、J、N)的引脚排列图,每个引脚的功能如VCC、GND、OUT、FB、ISENSE等均有详细描述。

参数特性: - 包括但不限于:供电电压范围、输出电流(峰值/连续)、模拟输入、错误放大器输出吸收电流、振荡器频率范围、工作环境温度范围等。

功能详解: - 详细介绍了各个功能部分,如振荡器部分、错误放大器部分、电流感应部分、输出部分、欠压锁定部分、PWM部分等。

应用信息: - 提供了振荡器计时电路、电流感应尖峰抑制、MOSFET寄生振荡、双极型晶体管驱动、隔离MOSFET驱动、可调缓冲减少钳位水平与软启动、外部占空比钳制和多单元同步等典型应用电路。

封装信息: - 提供了Plastic DIP M 8-pin、Plastic DIP N 14-pin、Plastic SOIC DM 8-pin、Plastic SOIC D 14-pin、Ceramic DIP 8-pin、Ceramic DIP J 14-pin、Cer. Flatpack F 10-pin、Ceramic LCC L 20-pin等封装类型的信息。
SG3844Y 价格&库存

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