UM1361S Overview
Description
The UM1361S is a PWM step-down converter with internal power switch, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 6V and 40V and employs hysteretic control with a high side current sense resistor to set the constant output current up to 1A.
Key Features
- Integrated 40V 0.5Ω NDMOS z > 90% Efficiency
- Wide Input Voltage Range: 6V to 40V z ± 5% LED Current Accuracy
- Adjustable Constant LED Current
- Analog or PWM Control Signal for PWM Dimming
- Over Temperature, Open Circuit LED Protect
