A6902D中文资料最高1 A的降压开关稳压器，电流限值可调，用于汽车应用数据手册ST规格书

描述 Description

The A6902D is a complete step down switching regulator with adjustable current limit. Based on a voltage mode structure it integrates an additional current error amplifier to implement both a constant voltage and constant current control.

The current limit programming is very simple and accurate (± 5%) selecting the proper sensing resistor.

The DC-DC converter can be used either as a voltage source with adjustable current limit (set by using the external sense resistor) or as current source to charge NiMH / NiCd batteries or drive voltage load like LEDs.

The internal P-Channel DMOS transistor (typ. RDSON 250 mΩ) assures high efficiency and minimum dropout even at high output current level.

特性 Features

• Qualified following the AEC-Q100 requirements
• Up to 1 A DC output current
• Operating input voltage from 8 V to 36 V
• Output voltage adjustable from 1.235 V to 35 V
• Precise 3.3 V (±2 %) reference voltage
• 250 kHz Internally fixed frequency
• Voltage feedforward
• Zero-load current operation
• Internal current limiting
• Protection against feedback disconnection
• Thermal shutdown

简介

A6902D属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的A6902D稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。