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AAT3170IWP-T1

AAT3170IWP-T1

  • 厂商:

    AAT(类比)

  • 封装:

  • 描述:

    AAT3170IWP-T1 - High Current LED Flash Driver Charge Pump IC - Advanced Analog Technology, Inc.

  • 详情介绍
  • 数据手册
  • 价格&库存
AAT3170IWP-T1 数据手册
High Current LED Flash Driver Charge Pump IC General Description The AAT3170 is a high output current, high efficiency, low noise, low profile charge pump DC/DC converter, ideal for multi-function LED photo-flash applications where solution cost, size, and efficiency are critical. The dual charge pump in the AAT3170 is capable of delivering 600mA output current. Two currentcontrolled paths are available for users of dual flash LEDs that prefer current matching. Each LED channel can be easily programmed in 32 steps with a single GPIO output through the AS2Cwire™ (Advanced Simple Serial Control™) interface. This allows smooth transitions and flexible adjustment of brightness in flash or other lighting modes. The tri-mode (1X/1.5X/2X) operation of the internal charge pump offers excellent power efficiency for both flash and movie modes. Combined with a low external parts count (two 1µF flying capacitors and one small bypass capacitor at VIN and OUT), the AAT3170 is ideally suited for small, battery-powered applications. The AAT3170 has a thermal management system to protect the device in the event of a short-circuit condition at the output pin. Built-in soft-start circuitry prevents excessive inrush current during start-up. The shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1.0µA. The AAT3170 is available in the Pb-free, thermallyenhanced, 12-pin 3x3mm TDFN package. AAT3170 Features • • • • • • • • • • • • • • ChargePump™ VIN Range: 2.7V to 5.5V 600mA Output Current Tri-Mode 1X/1.5X/2X in Current Mode Voltage Mode Operation: 1.5X, 200mA Dual Regulated Current Sinks Current Match Between Current Sinks 32 Current Steps Set by AS2Cwire 1µF Input, Output, and Flying Capacitors
AAT3170IWP-T1
1. 物料型号: - AAT3170

2. 器件简介: - AAT3170是一款高输出电流、高效率、低噪声、低配置的电荷泵DC/DC转换器,适用于多功能LED闪光灯应用,这些应用对解决方案的成本、尺寸和效率至关重要。

3. 引脚分配: - VIN(1,12脚):输入电源引脚,需要连接4.7μF或更大的陶瓷旁路电容至地。 - C1+(2脚):飞行电容C1正极。 - C1-(3脚):飞行电容C1负极。 - GND(4脚):地连接。 - F1(5脚):电流汇输入#1。 - F2(6脚):电流汇输入#2。 - EN/SET(7脚):AS2Cwire串行接口控制引脚。 - CT(8脚):闪光灯控制电容输入。 - C2-(9脚):飞行电容C2负极。 - C2+(10脚):飞行电容C2正极。 - VOUT(11脚):电荷泵输出,需要连接2.2μF或更大的陶瓷电容至地。 - EP:暴露的船舵(底部);直接连接到芯片下方的GND。

4. 参数特性: - 输入电压范围:2.7V至5.5V。 - 输出电流:600mA。 - 三模式(1X/1.5X/2X)操作。 - 双调节电流汇。 - 通过AS2Cwire接口进行32级电流设置。 - 关闭时的静态电流:<1.0μA。 - 工作温度范围:-40°C至+85°C。

5. 功能详解: - AAT3170包含两个可编程恒流汇,用于集成闪光灯电路控制。通过AS2Cwire串行接口进行编程,具有16个电流级别设置。 - 设备包含三个模式寄存器,用于设置电流级别和操作模式。 - 设备具有软件可编程的计时器功能,用于自动调整闪光灯的开启时间。

6. 应用信息: - 适用于手机、数字相机、PDA和笔记本电脑等设备的LED闪光灯应用。 - 设备还具有恒压模式设置,可以用于驱动需要4.5V电源的其他应用,如辅助照明和状态指示LED。

7. 封装信息: - TDFN33-12封装,标记为QLXYY,型号为AAT3170IWP-T1。
AAT3170IWP-T1 价格&库存

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