AP3843GM-E1

AP3843GM-E1

  • 厂商:

    BCDSEMI(美台)

  • 封装:

  • 描述:

    AP3843GM-E1 - GREEN MODE PWM CONTROLLER - BCD Semiconductor Manufacturing Limited

  • 详情介绍
  • 数据手册
  • 价格&库存
AP3843GM-E1 数据手册
Data Sheet GREEN MODE PWM CONTROLLER General Description The AP384XG is a Green Mode PWM controller. It is specially designed for off-line AC-DC adapter and battery charger applications where both needs for low standby power and high efficiency in normal operation are required. In a well designed product, the AP384XG is capable to allow the system consuming only 0.5W power in standby mode. In normal operation, the AP384XG features adjustable frequency by using an external resistor and capacitor combination. When output power falls below a given level, the IC automatically switches to the skip mode, which works by skipping switching cycles. The AP384XG also features low start-up and low standby operating current for its special topology. The AP384XG provides accurate protection against over-temperature, over-current and maximal output power. The AP384XG is available in SOIC-8 and DIP-8 packages. AP384XG Features · · · · · · · · · · Green Mode PWM Controller to Support the "Blue Angel" Norm Adjustable Skip Cycle Mode Operation Low Start-up Current: 50µA (Typ.) Low Standby Operating Current: 6mA Internal Leading Edge Blanking Adjustable Oscillator Frequency up to 500KHz Totem Pole Output Under Voltage Lock Out (UVLO) Over-Temperature Protection Pin to Pin Replacement for AZ384XA Applications · · · · · Off-line Converter DC-DC Converter DVD/STB Power Supply Power Adapter CRT Monitor Power Supply SOIC-8 DIP-8 Figure 1. Package Types of AP384XG Aug. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 1 Data Sheet GREEN MODE PWM CONTROLLER Pin Configuration P/M Package (DIP-8/SOIC-8) COMP FB CS RT/CT 1 2 3 4 8 7 6 5 REF VCC OUTPUT GND AP384XG Figure 2. Pin Configuration of AP384XG Pin Description Pin Number 1 2 3 4 5 6 7 8 Pin Name COMP FB CS RT/CT GND OUTPUT VCC REF Function This pin is the Error Amplifier output and is made available for loop compensation. The inverting input of the Error Amplifier. It is normally connected to the switching power supply output through an external resistor divider. It is used either for current sense (normal mode) or skip cycle level selection (standby mode). The oscillator frequency and maximum output duty cycle are programmed by connecting resistor RT to REF and capacitor CT to ground. The ground pin. This output directly drives the gate of a power MOSFET. Peak currents up to 1.0 A are sourced and sunk by this pin. The power supply pin. This is the reference output. It provides charging current for capacitor CT through resistor RT. Aug. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 2 Data Sheet GREEN MODE PWM CONTROLLER Functional Block Diagram VCC 7 34V UVLO S/R 5V REF AP384XG 8 GND 5 2.50V REF INTERNAL BIAS RT/CT 4 VREF GOOD LOGIC OSC OVER TEMP PROTECT S ERROR AMP 2R R R 1V Q Q 6 OUTPUT FB COMP CS 2 1 3 PWM CURRENT LATCH SENSE COMPARATOR Figure 3. Functional Block Diagram of AP384XG Ordering Information AP384XG Circuit Type Package M: SOIC-8 P: DIP-8 E1: Lead Free Blank: Tin Lead TR: Tape and Reel Blank: Tube Package SOIC-8 DIP-8 Temperature Range -40 to 85oC -40 to 85oC Part Number Tin Lead AP3842/3/4/5GM Marking ID Tin Lead 3842/3/4/5GM 3842/3/4/5GM AP3842/3/4/5GP Lead Free AP3842/3/4/5GM-E1 Lead Free 3842/3/4/5GM-E1 3842/3/4/5GM-E1 AP3842/3/4/5GP-E1 Packing Type Tube Tape & Reel Tube AP3842/3/4/5GMTR AP3842/3/4/5GMTR-E1 AP3842/3/4/5GP AP3842/3/4/5GP-E1 BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Aug. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 3 Data Sheet GREEN MODE PWM CONTROLLER Absolute Maximum Ratings (Note 1, 2) Parameter Supply Voltage Gate Output Current Analog Inputs (pin2, 3) Error Amp Output Sink Current Power Dissipation at TA< 25 oC (DIP-8) Power Dissipation at TA
AP3843GM-E1
1. 物料型号: - AP384XG有SOIC-8和DIP-8两种封装形式,具体型号包括AP3842/3/4/5GM和AP3842/3/4/5GP,其中带有“E1”后缀的为无铅产品,符合RoHS标准。

2. 器件简介: - AP384XG是一款绿色模式PWM控制器,专为离线AC-DC适配器和电池充电器应用设计,这些应用需要低待机功耗和正常操作时的高效率。在设计良好的产品中,AP384XG能够使系统在待机模式下仅消耗0.5W的功率。

3. 引脚分配: - COMP:误差放大器输出,用于环路补偿。 - FB:误差放大器的反相输入,通常连接到开关电源输出,通过外部电阻分压器。 - CS:用于电流检测(正常模式)或跳周期水平选择(待机模式)。 - Rr/CT:通过连接电阻Rr到REF和电容Cr到地,设置振荡器频率和最大输出占空比。 - GND:地引脚。 - OUTPUT:直接驱动功率MOSFET的门极,能够源/汇1.0A的峰值电流。 - VCC:电源引脚。 - REF:参考输出,为电容Cr通过电阻Rr提供充电电流。

4. 参数特性: - 支持“蓝天使”标准的绿色模式PWM控制器。 - 可调跳周期模式操作。 - 低启动电流:50µA(典型值)。 - 低待机操作电流:6mA。 - 内部前沿消隐可调振荡器频率高达500kHz。 - 射极耦合输出。 - 欠压锁定(UVLO)。 - 过温保护。 - 与AZ384XA引脚对引脚替换。

5. 功能详解: - AP384XG在正常操作时,可以通过外部电阻和电容组合调整频率。当输出功率低于给定水平时,IC自动切换到跳周期模式,通过跳过开关周期工作。AP384XG还具有特殊的拓扑结构,提供低启动和低待机操作电流。

6. 应用信息: - 应用于离线转换器、DC-DC转换器、DVD/STB电源、电源适配器、CRT监视器电源。

7. 封装信息: - 提供SOIC-8和DIP-8两种封装,具体的温度范围是-40到85°C。
AP3843GM-E1 价格&库存

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