Datasheet Summary
60V，Step-down High Brightness LED Controller with 2500:1 Dimming
GENERAL DESCRIPTION
The PT4121 is a high efficiency step-down controller.It is designed to operate in continuous conduction mode and drive single or multiple series connected LED efficiently from a voltage source higher than the total LED chain voltage. It operates with a wide input voltage from 6V to 60V and provides an externally adjustable output current. The PT4121 includes a high-side output current sense circuit, which uses an external resistor to set the nominal average output current, and a dedicated DIM input accepts either a DC voltage or PWM dimming. The PT4121 is available in SOT23-6 packages.
Features
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