NATIONAL SEMICONDUCTOR LM20323 36V 3A PowerWise 500 kHz Synchronous Buck Regulator Manual
Update: 01 October, 2023
The LM20323 is a 36V, 3A synchronous buck regulator from TI that operates at a frequency of up to 500kHz. The device uses current mode control and requires only two external components for compensation, providing both high performance and ease of use. LM20323's input voltage range is 4.5V to 36V, making it suitable for high voltage systems. The device features internal overvoltage protection (OVP) and overcurrent protection (OCP) circuits to improve system reliability. A precision enable pin and integrated UVLO allow the device to be tightly controlled and sequenced during startup. Startup inrush currents are limited by both an internally fixed and externally adjustable soft-start circuit. Fault detection and supply sequencing are possible with the integrated power good (PGOOD) circuit. LM20323 is designed to perform well in multi-rail power supply architectures. Using the SS/TRK pin, the device's output voltage can be configured to track a higher voltage power rail. If the LM20323 is pre-biased at startup, it will not sink current to pull the output low until the internal soft-start ramp exceeds the voltage at the feedback pin. LM20323 is offered in an exposed pad 20-pin eTSSOP package that can be directly soldered to the PCB, eliminating the need for bulky heatsinks.
Brand: National
File format: PDF
Size: 492 KB
MD5 Checksum: AD5AAAC1EA283B18F409D5C24FF829C8
Publication date: 02 May, 2012
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PDF Link: NATIONAL SEMICONDUCTOR LM20323 36V 3A PowerWise 500 kHz Synchronous Buck Regulator Manual PDF