LM34922中文资料具有可调节限流功能的 6V 至 28V、2A、恒定导通时间非同步降压稳压器数据手册TI规格书

描述 Description

The LM34922 Constant On-time Step-Down Switching Regulator features all the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying up to 2A of load current. This voltage regulator contains an N-Channel Buck switch, a startup regulator, current limit detection, and internal ripple control. The constant on-time regulation principle requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load. The adjustable valley current limit detection results in a smooth transition from constant voltage to constant current mode when current limit is reached, without the use of current limit foldback. The PGD output indicates the output voltage has increased to within 5% of the expected regulation value. Additional features include: Low output ripple, VIN under-voltage lock-out, adjustable soft-start timing, thermal shutdown, gate drive pre-charge, gate drive under-voltage lock-out, and maximum duty cycle limit.

特性 Features

• Input Operating Voltage Range: 6V to 28V
• Integrated 2A N-Channel Buck Switch
• Adjustable Output Voltage from 2.51V
• Power Good Output
• COT Topology Features:
• Ultra-Fast Transient Response
• Stable Operation with Ceramic Output Capacitors
• Adjustable Soft-Start Timing
• Precision 2% Feedback Reference

简介

LM34922属于集成电路（IC）的稳压器-DC-DC开关稳压器。由TI制造生产的LM34922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。