SG1842

SG1842

  • 厂商:

    MICROSEMI(美高森美)

  • 封装:

  • 描述:

    SG1842 - CURRENT MODE PWM CONTROLLER - Microsemi Corporation

  • 详情介绍
  • 数据手册
  • 价格&库存
SG1842 数据手册
SG1842/SG1843 Series TM ® CURRENT MODE PWM CONTROLLER P RODUCTION D ATA S HEET DESCRIPTION The SG1842/43 family of control IC's provides all lockout, current limiting circuitry and start-up the necessary features to implement off-line fixed current of less than 1mA. The totem-pole output frequency, current-mode switching power supplies is optimized to drive the gate of a power with a minimum number of external components. MOSFET. The output is low in the off state to Current-mode architecture demonstrates improved provide direct interface to an N channel device. line regulation, improved load regulation, pulse- The SG1842/43 is specified for operation over by-pulse current limiting and inherent protection the full military ambient temperature range of of the power supply output switch. The bandgap 55°C to 125°C. The SG2842/43 is specified for reference is trimmed to ±1% over temperature. the industrial range of -25°C to 85°C, and the Oscillator discharge current is trimmed to less SG3842/43 is designed for the commercial range than ±10%. The SG1842/43 has under-voltage of 0°C to 70°C. IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com KEY FEATURES OPTIMIZED FOR OFF-LINE CONTROL LOW START-UP CURRENT (
SG1842
1. 物料型号: - SG1842/SG1843系列控制器,包括不同温度范围和封装选项。例如:SG3842M、SG3842N、SG3842DM等。

2. 器件简介: - SG1842/SG1843系列是一款用于离线控制的电流模式PWM控制器IC,具有内置的6V滞后欠压锁定(仅限SG1842)、双脉冲抑制、高峰值电流图腾柱输出(1A峰值)、内部修剪的带隙参考、500kHz工作频率和欠压锁定功能。

3. 引脚分配: - 提供了不同封装的引脚排列图,包括M、DM、D、J、N、F等封装形式。

4. 参数特性: - 供电电压范围:30V - 输出电流(峰值):±1A - 输出电流(连续):50mA - 模拟输入(引脚2、3):-0.3V至+6.3V - 误差放大器输出吸收电流:0mA - 功耗散在T=25°C时(DIL):W - 工作结温范围:-55°C至125°C - 存储温度范围:-65°C至+150°C - 引脚温度(焊接,10秒):300°C - 无铅/RoHS峰值封装焊接回流温度(最多40秒暴露):260°C(+0,-5)

5. 功能详解: - 这些控制器IC提供欠压锁定、电流限制电路和启动功能,适用于实现离线固定频率、电流模式开关电源。 - 电流模式架构展示了改善的线路调节、负载调节、脉冲电流限制以及对电源输出开关的固有保护。

6. 应用信息: - 提供了振荡器计时电路、振荡器频率与RT/CT的关系、电流感应尖峰抑制、MOSFET寄生振荡、双极型晶体管驱动、隔离MOSFET驱动等典型应用电路。

7. 封装信息: - 提供了Plastic DIP M 8-Pin、Plastic DIP 14-Pin、DM 8-Pin、Plastic SOIC、Plastic SOIC D 14-Pin、Ceramic Dip 8-Pin、Ceramic DIP J 14-Pin、Cer Flatpack F 10-Pin、Ceramic LCC L 20-Pin等多种封装选项。
SG1842 价格&库存

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