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UM1360 - Hysteretic Buck High Brightness LED Driver

Description

The UM1360 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 UM1360 can drive up to 10 series connected LEDs.

Features

  • z Hysteretic Control with High Side Current Sensing z Integrated 40V 0.5Ω NDMOS z Up to 98% Efficiency z Wide Input Voltage Range: 6V to 40V z 50V Transient Capability z ± 5% LED Current Accuracy z Adjustable Constant LED Current z Single Pin On/Off and Brightness Control Using DC Voltage or PWM z Spread Spectrum Driver z Over Temperature, Open Circuit LED Protection z Up to 1MHz Switching Frequency z Pb-Free SOT89-5 Package ______________________________________________________________________.

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Datasheet preview – UM1360

Datasheet Details

Part number UM1360
Manufacturer Union Semiconductor
File Size 443.50 KB
Description Hysteretic Buck High Brightness LED Driver
Datasheet download datasheet UM1360 Datasheet
Additional preview pages of the UM1360 datasheet.

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Full PDF Text Transcription

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UM1360 Hysteretic Buck High Brightness LED Driver with Internal Switch UM1360Y SOT89-5 General Description The UM1360 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 UM1360 can drive up to 10 series connected LEDs. 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. The device is well suited for applications requiring a wide input range. The high side current sensing and an integrated current sensing circuitry minimize the number of external components while delivering an accurate average output current.
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