描述 Description

The MIC22705 is a high-efficiency, 7A integrated switch synchronous buck (step-down) regulator. The MIC22705 is optimized for highest efficiency, achieving more than 95% efficiency while still switching at 1MHz. The ultra-high speed control loop keeps the output voltage within regulation even under the extreme transient load swings commonly found in FPGAs and low-voltage ASICs. The output voltage is pre-bias safe and can be adjusted down to 0.7V to address all low-voltage power needs.

The MIC22705 offers a full range of sequencing and tracking options. The Enable/Delay (EN/DLY) pin, combined with the Power Good (PG) pin, allows multiple outputs to be sequenced in any way during turn-on and turn-off. The Ramp Control? (RC) pin allows the device to be connected to another product in the MIC22xxx and/or MIC68xxx family, to keep the output voltages within a certain ?V on start-up.

特性 Features

? Input voltage range: 2.9V to 5.5V
? Output voltage adjustable down to 0.7V
? Output load current up to 7A
? Safe start-up into a pre-biased load
? Full sequencing and tracking capability
? Power Good output
? Efficiency >95% across a broad load range
? Ultra-fast transient response
? Easy RC compensation
? 100% maximum duty cycle
? Fully-integrated MOSFET switches
? Thermal-shutdown and current-limit protection
? -40°C to +125°C junction temperature range

簡(jiǎn)介

MIC22705屬于集成電路（IC）的DCDC開(kāi)關(guān)穩(wěn)壓器。由制造生產(chǎn)的MIC22705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。這些器件與稱為“控制器”PMIC 的類似產(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。