PM6644中文资料350 mA可调降压稳压器数据手册ST规格书

描述 Description

The PM6644 is a 350 mA valley current limit step-down regulator capable of delivering an adjustable output voltage in the range between 0.9 V and 8 V. A fixed value of output voltage is also available (3.47 V), saving the external resistor divider. It is housed in a small DFN10 3x3 package. The switching regulator is based on COT (constant-on-time) architecture, that assures fast load transient response; the embedded voltage feed-forward provides nearly constant switching frequency operation. The pulse skipping technique increases efficiency at very light load. The switching frequency can be adjusted from 200 kHz to 600 kHz through a simple resistor. The switching regulator can be programmed to regulate a fixed value of 3.47 V or it can deliver an adjustable voltage, depending on the FB pin set-up.

特性 Features

• 4.5 V to 25 V input voltage range
• Output voltage VOUT: fixed 3.47 V or adjustable 0.9 V to 8 V
• 350 mA valley current limit
• Constant-on-time control
• Programmable switching frequency
• Pulse skipping mode (skip mode) at light loads
• Independent EN signals
• Latched OVP and UVP

简介

PM6644属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的PM6644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。