MIC22950中文资料2MHz 10A Synchronous Buck Regulator w/Progammable Frequency数据手册Microchip规格书

描述 Description

The MIC22950 is a high efficiency 10A integrated switch synchronous buck (step-down) regulator. The MIC22950 switching frequency is programmable from 400kHz to 2MHz, allowing the customer to optimize designing either for efficiency or for the smallest footprint. The MIC22950 achieves over 95% efficiency while still switching at 2MHz over a broad load range.

The ultra-high speed control loop keeps the output voltage within regulation, even under extreme transient load swings commonly found in FPGAs and low voltage ASICs. The output voltage can be adjusted down to 0.7V in order to address all low voltage power needs.

The MIC22950 features a full range of sequencing and tracking options. The enable and the delay pins, combined with the power good pin, allow multiple outputs to be sequenced in several ways during turn on and turn off. The RC (Ramp Control™) pin allows the device to be connected to any another device in the MIC22x00 family of products, to keep the output voltages within a certain delta V during start up.

特性 Features

• 2.6V to 5.5V supply voltage
• Fully integrated MOSFET switches
• Adjustable output voltage option down to 0.7V
• Output load current up to 10A
• Full sequencing and tracking capability
• Power On Reset
• Efficiency >95% across a broad load range
• Operating frequency programmable: 400kHz to 2MHz
• Ultra-fast transient response
• 100% maximum duty cycle
• Micropower shutdown
• Thermal shutdown and current-limit protection
• -40°C to +125°C junction temperature range

简介

MIC22950属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的MIC22950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。