描述 Description

The MIC28513 is a synchronous step-down switching regulator with internal power switches capable of providing up to 4A output current from a wide input supply range from 4.6V to 45V. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%. A constant switching frequency can be programmed from 200kHz to 680kHz. The MIC28513's Hyper Speed ControlTM and HyperLight Load? architectures allow for high VIN (low VOUT) operation and ultra-fast transient response while reducing the required output capacitance. In addition to fore-mentioned attributes, the MIC28513-1's HyperLight Load?architecture provides very good light load efficiency.The MIC28513 offers a full suite of features to ensure protection under fault conditions. These include under voltage 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.

特性 Features

? 4.6V to 45V operating input voltage supply
? Up to 4A output current
? Integrated high-side and low-side N-channel MOSFETs
? HyperLight Load? (MIC28513-1) and Hyper Speed Control? (MIC28513-2) architecture
? Enable input, power good (PGOOD) output
? Programmable current limit and foldback \"hiccup\" mode short circuit protection
? Built-in 5V regulator for single supply operation
? Adjustable 200kHz to 680kHz switching frequency
? Fixed 5ms soft-start
? Internal compensation and thermal shutdown.
? Thermally enhanced 24-pin 3mm — 4mm FCQFN
? Junction temperature range of ?40°C to +125°C

簡(jiǎn)介

MIC28513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MIC28513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。