Unisonic Technologies L4075
L4075 is a continuous conduction mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the total LEDs chain voltage. The chip operates from an input supply between 6V and 40V and provides an externally adjustable output current of up to 400mA. The UTC L4075 includes an integrated output switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current.DESCRIPTION
The UTC Depending upon supply voltage and external components, this can provide up to 30W of output power. Output current can be adjusted linearly by applying an external control signal to the ADJ pin. The ADJ pin will accept either a DC voltage dimming or a wide range of pulsed dimming. This will provide either a continuous or a gated output current. Applying a voltage of 0.2V or lower to the ADJ pin can turn the output off and switch the chip into a low current standby state.●
FEATURES
* 6V~40V input voltage range * Simple low parts count * Internal 40V power switch * High efficiency up to 95% * Typical 5% output current accuracy * Single pin on/off and brightness control using DC voltage or PWM * Up to 1MHz switching frequency * Protection features: Open-circuit LED Protection Thermal shutdown Protection● ORDERING INFORMATION Ordering Number Lead Free Halogen Free L4075L-AF5-R L4075G-AF5-R Package SOT-25 CMOS IC Packing Tape Reel Copyright © 2018 Unisonic Technologies Co., Ltd 1 of 5 QW-R125-030.b L4075
● MARKING Preliminary
● PIN CONFIGURATION CMOS IC
● PIN
DESCRIPTION
PIN NO.