LTC1143 雙路 5V/2A、3.3V/3A
轉換器的典型應用電路。 LTC1143 系列是一款雙路降壓型
開關穩壓器控制器,具有自動突發
調制解調器操作功能,可在低輸出
電流下保持高效率。該器件由兩個獨立的調節器塊組成,每個調節器塊使用恒定關斷時間電流模式架構以高達 400kHz 的開關頻率驅動外部功率 MOSFET
說明
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Typical Application Circuit for LTC1143 Dual 5V/2A, 3.3V/3A Converter. The LTC1143 series is a dual step-down switching regulator controller featuring automatic Burst Modem operation to maintain high efficiencies at low output currents. This device is composed of two separate regulator blocks, each driving an external power MOSFET at switching frequencies up to 400kHz using a constant off-time current mode architecture
主要特色
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Conversion Type
DC to DC
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Input Voltage
5.2 to 14 V
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Output Voltage
3.3|5 V
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Output Current
2@5V|3@3.3V A
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Topology
Buck