UM1351 Datasheet | Union Semiconductor

Hysteretic Buck High Brightness LED Driver with Internal Switch UM1351Y SOT89-5 UM1351S SOT23-5 General Description The UM1351 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 UM1351 can drive up to 8 series connected LEDs. The device operates from an input supply between 6V and 35V and employs hysteretic control with a high side current sense resistor to set the constant output current up to 700mA. The device is well suited for applications requiring a wide input range. The high side current sensing and an integrated current sensing circuitry...