MCP1252中文资料Low Noise, Positive-Regulated Charge Pump数据手册Microchip规格书

描述 Description

The MCP1252-33X50 and MCP1252-ADJ are inductorless, positive regulating, low noise charge pump DC-to-DC converters. The MCP1252-33X50 has selectable outputs of either 3.3 or 5.0 V, while the MCP1252-ADJ has an adjustable output between 1.5 and 5.5 V. Both can deliver 120 mA of load current at the selected regulated output voltage. Since the device incorporates an automatic buck/boost feature, it will maintain the regulated output voltage whether the input voltage is above or below the output voltage. These charge pumps operateat a switching frequency of 650 kHz, and feature power saving shutdown pins, short circuit protection, thermal shutdown, and power-good pins that report out-of-regulation conditions.

特性 Features

Wide 2.1 to 5.0V input range
Fixed, regulated 3.3 V, 5.0 V, or adjustable (1.5 to 5.5 V) outputs
Supplies regulated output voltages for up to 120 mA loads
Low 60 µA supply current in no load conditions
High 2.5% voltage accuracy (on fixed voltage outputs)
High 650 kHz operation to aoivd interference with IF bands
Logic level shutdown control reduces current consumption to 0.1 µA during standby operation
Power-good output indicator with hysteresis
Thermal shutdown protection with hysteresis
Short circuit protection
Soft-start circuitry to minimize inrush current
-40 ºC to +85 ºC operation

简介

MCP1252属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的MCP1252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。