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News
25A µModule Regulator Supports N+1 Redundancy Ensuring Power Availability under Fault Conditions
2017-10-09 | ReturnThe LTM4645 operates from 4.7V to 15V input supply and regulates an output voltage adjustable from 0.6V to 1.8V. Synchronous step-down operation delivers 25A at 1V from 12VIN with 86% efficiency, 3.5W power loss and 41°C rise (no airflow, no heat sink). The device is offered in a 9mm x 15mm x 3.51mm BGA package and includes the inductor, MOSFETs and DC/DC regulator IC. With a differential remote sense amplifier to compensate for voltage droop caused by PCB trace resistance and tested electrical parameters from –40°C to 125°C, the output voltage total DC accuracy is guaranteed at ±1.2%. The LTM4645 has several safety functions such as output overvoltage protection, output overcurrent protection, and an onboard temperature monitoring diode. The propagation delay from time of failure device turn-off is less than 200ns.
The LTM4645 is rated for operation from –40°C to 125°C. Up to 6 devices can current share for 150A of load current. Power loss is only 3.5W for 12V input to 1V output at 25A load. For 12V input, 1V output conversion, full power is delivered up to 75°C (0LFM, no heat sink) and at 85°C derating of load current is 20A. 1,000-piece pricing starts at $26.23 each. For more information, visit www.linear.com/product/LTM4645.
Summary of Features: LTM4645
• 4.7V to 15V Input Voltage Range
• 0.6V to 1.8V Output Voltage Range
• 25A DC Output Current
• ±1.2% Total DC Output Voltage Error from –40°C to 125°C
• Supports High Reliability N+1 Phase Redundancy
• 9mm x 15mm x 3.51mm BGA Package
Pricing shown is for budgetary use only and may differ due to local duties, taxes, fees and exchange rates.
Source:http://www.linear.com/