A8732集成电路（IC）的电源管理-专用规格书PDF中文资料

A8732属于集成电路（IC）的电源管理-专用。由Allegro MicroSystems制造生产的A8732电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。

描述 Description

The Allegro®A8732 is a Xenon photoflash charger IC designed to meet the needs of ultra low power, small form factor cameras, particularly camera phones. By using primary-side voltage sensing, the need for a secondary-side resistive voltage divider is eliminated. This has the additional benefit of reducing leakage currents on the secondary side of the transformer. To extend battery life, the A8732 features very low supply current draw (0.5 μA max in shutdown mode). The switch current limit can be programmed from 0.45 to 1.5 A, in 16 steps with single wire interface, through the CHARGE pin.

Features and Benefits

▪ Ultra small 2 × 2 DFN/MLP-8 package

▪ Low quiescent current draw (0.5 μA max. in shutdown mode)

▪ Primary-side output voltage sensing; no resistor divider required

▪ Adjustable switch peak current limit up to 1.5 A with

single-wire programming through the CHARGE pin

▪ 1V logic (VHI(min)) compatibility

▪ Integrated IGBT driver with internal gate resistors

▪ Optimized for mobile phone, 1-cell Li+ battery applications

▪ Zero-voltage switching for lower loss

▪ >75 efficiency

▪ Charge complete indication

▪ Integrated 50 V DMOS switch with self-clamping

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