描述 Description

The MIC22400 is a high-efficiency, 4A integrated switch synchronous buck (step-down) regulator. The MIC22400 is optimized for highest efficiency, achieving over 90% efficiency while still switching at 1MHz 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 to address all low-voltage power needs. The MIC22400 gives a full range of sequencing and tracking options. The EN/DLY pin combined with the Power-On-Reset (POR) pin allows multiple outputs to be sequenced in any way on turn-on and turn-off. The Ramp Control? (RC) pin allows the device to be connected to another MIC22400 family of products to keep the output voltages within a certain ?V on start-up.

The MIC22400 is thermally-enhanced 20-pin ePad TSSOP with a junction operating range from -40°C to +125°C.

特性 Features

? Input voltage range: 2.6V to 5.5V
? Output voltage adjustable down to 0.7V
? Output current up to 4A
? Full sequencing and tracking ability
? Power-On-Reset (POR)
? Efficiency > 90% across a broad load range
? Programmable frequency 300kHz to 4MHz
? Easy Ramp Control? (RC) compensation
? Ultra-fast transient response
? 100% maximum duty cycle
? Fully-integrated MOSFET switches
? Micropower shutdown
? Thermal-shutdown and current limit protection?
? 20-pin ePad TSSOP
? -40°C to +125°C junction temperature range

簡(jiǎn)介

MIC22400屬于集成電路（IC）的穩(wěn)壓器-DC-DC開(kāi)關(guān)穩(wěn)壓器。由制造生產(chǎn)的MIC22400穩(wěn)壓器 - DC-DC 開(kāi)關(guān)穩(wěn)壓器DC-DC 開(kāi)關(guān)穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級(jí)設(shè)備，用于需要穩(wěn)定 DC 輸入電壓和/或?qū)⑵滢D(zhuǎn)換為不同幅度的輸出電壓的應(yīng)用。這些器件與稱(chēng)為“控制器”P(pán)MIC 的類(lèi)似產(chǎn)品的區(qū)別在于集成了主開(kāi)關(guān)元件，設(shè)備提供的電力會(huì)通過(guò)該元件。