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PDF L4075 Data sheet ( Hoja de datos )
| Número de pieza | L4075 | |
| Descripción | 40V LED DRIVER | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L4075 (archivo pdf) en la parte inferior de esta página. Total 5 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
L4075
Preliminary
40V LED DRIVER WITH
INTERNAL SWITCH
DESCRIPTION
The UTC 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 750mA (SOT89-5). Depending upon supply voltage
and external components, this can provide up to 30W of output
power.
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.
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
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
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L4075
Preliminary
TYPICAL APPLICATION CIRCUIT
VIN (DC)= 6V~40V
C1
1µF
5 VIN
D1
LX 1
UTC L4075
GND 2
4 ISENSE
ADJ 3
CMOS IC
Up to 10
LEDs
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet L4075.PDF ] | |
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