MIC24053中文资料19V/9A High Efficiency DC-DC Buck Regulator数据手册Microchip规格书

描述 Description

The MIC24053 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC24053 operates over an input supply range of 4.5V to 19V and provides a regulated output of up to 9A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%, and the device operates at a switching frequency of 600kHz.Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance and also makes (High VIN)/(Low VOUT) operation possible. This adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device.The MIC24053 offers a full suite of features to ensure protection of the IC during fault conditions. These include undervoltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, foldback current limit, \"hiccup mode\" short-circuit protection, and thermal shutdown. An open-drain Power Good (PG) pin is provided. The 9A Hyper Light Load® part, MIC24054, is also available.

特性 Features

Hyper Speed Control™ architecture enables
High delta V operation (VIN = 19V and VOUT = 0.8V)
Small output capacitance
Input voltage range: 4.5V to 19V
Output current up to 9A, up to 95% efficiency
Adjustable output voltage from 0.8V to 5.5V
±1% feedback accuracy
Any Capacitor™ stable - zero-to-high ESR
600kHz switching frequency
No external compensation
Power Good (PG) output
Foldback current-limit and \"hiccup\" mode short-circuit protection
Supports safe start-up into pre-biased loads
-40°C to +125°C junction temperature range
Available in 28-pin 5mm — 6mm QFN package

简介

MIC24053属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的MIC24053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。