The DIODES™ AL8843 is a hysteresis mode DC-DC step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device can operate from an input supply between 4.5V and 40V and provide an externally adjustable output current up to 3A. Depending upon supply voltage and externa.
Wide Input Voltage Range: 4.5V to 40V
Output Current up to 3A
Internal 40V NDMOS Switch
Typical 4% Output Current Accuracy
Single Pin for On/Off and Brightness Control by DC Voltage or
PWM Signal
Recommended Analog Dimming Range: 10% to 100%
Soft-Start
High Efficiency (Up to 97%)
LED Short Protection
Inherent Open-Circuit LED Protection
Over Temperature Protection (OTP)
Up to 1MHz Switching Frequency
SO-8EP Package Available in Green Molding Compound (No Br,
Sb)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note .
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | AL8841Q |
DIODES |
AUTOMOTIVE 40V 1A/1.5A STEP-DOWN LED DQRIVER | |
2 | AL8843Q |
Diodes |
AUTOMOTIVE COMPLIANT 40V 3A STEP-DOWN LED DRIVER | |
3 | AL8805 |
Diodes Incorporated |
HIGH EFFICIENCY 30V 1A BUCK LED DRIVER | |
4 | AL8806 |
Diodes Incorporated |
HIGH EFFICIENCY 36V 1.5A BUCK LED DRIVER | |
5 | AL8806Q |
Diodes |
AUTOMOTIVE GRADE BUCK LED DRIVER | |
6 | AL8807 |
Diodes Incorporated |
HIGH EFFICIENCY LOW 36V 1A BUCK LED DRIVER | |
7 | AL8807A |
Diodes |
BUCK LED DRIVER | |
8 | AL8807B |
Diodes |
HIGH EFFICIENCY 36V 1.3A PWM DIMMABLE BUCK LED DRIVER | |
9 | AL8807BQ |
Diodes |
AUTOMOTIVE GRADE 30V 1.3A PWM DIMMABLE BUCK LED DRIVER | |
10 | AL8807Q |
Diodes |
HIGH EFFICIENCY LOW 30V 1.3A AUTOMOTIVE GRADE BUCK LED DRIVER | |
11 | AL8808 |
Diodes |
COST EFFECTIVE LOW EMI 30V 1A BUCK LED DRIVER | |
12 | AL8811 |
Diodes |
Boost/Buck/Inverting DC-DC CONVERTER |