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LA8509A
340KHz, 18V/3A Synchronous Step-Down DC-DC Converter
General Description
Features
The LA8509A is a current mode, synchronous step-down DC-DC converter that is designed to meet 3A output current, and utilizes PWM control scheme that switches with 340KHz fixed frequency.
The input voltage range of LA8509A is from 4.5V to 18V, and available in adjustable output voltage from 0.925V to 12V. The supply current is only 1.3mA during operation and under 0.3uA in shutdown.
This device provides an enable function that can be controlled by external logic signal. It also provides excellent regulation during line or load transient due to the current mode operation. Other features of current limit, soft-start, thermal shutdown protection, and short circuit protection are also included.