TD1457A 40V, 3A Asynchronous Step-Down Converter
(DATASHEET)
The TD1457A is a current mode monolithic buck switching regulator. Operating with an input range of 4.5‐40V, the TD1457A delivers 3A of continuous output current with an integrated high side N‐Channel MOSFET. At light loads, TD1457A operates in low frequency to maintain high efficiency and low output voltage ripple. Current mode control provides tight load transient response and cycle‐by‐cycle current limiting. The TD1457A guarantees robustness with input under‐voltage lockout, start‐up current run‐away protection, output short protection, feedback short protection and thermal protection. The TD1457A is available in 8‐pin ESOP package..
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Features
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4.5V to 40V operating input range
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3A output current
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Up to 94% efficiency
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High efficiency (>78%) at light load
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Internal Soft‐Start
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Adjustable switch frequency from 100kHz to 900kHz
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Input under‐voltage lockout
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Start‐up current run‐away protection
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Output short protection
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Feedback short protection
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Thermal protection
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Available in ESOP8 package
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Applications
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Distributed Power Systems
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Networking Systems
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FPGA, DSP, ASIC Power Supplies
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Green Electronics/ Appliances
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Notebook Computers |