High Voltage LED Controller with Feedback
The AAL4002 is a current-mode controller and driver, designed to provide closed-loop control of a string of LEDs, including either linear or PWM dimming. The LED current is regulated using peak current control, utilizing an accurate internal voltage reference. It includes a high voltage 500V FET to allow direct connection to rectified AC, and a feedback signal to control a front-end power supply.
Features
- Linear regulator VCC supply for 8V to 500V input voltage range
- External capacitor sets the operating frequency
- 7.2V +/-2% VDD output and reference
- 0.4 amp FET gate driver
- 0.20V +/-2% current sense reference
- TTL compatible PWM dimming input
- Feedback current-sink output
Applications
- RGB Backlights
- Automotive LED Driver
- Battery-powered LED Lamps
- DC/DC LED Drivers
- LED Lighting For Signs
- Buck or Buck-Boost Topology Converters
Ordering Information | Ordering PN(1) | Subgroup | Description | Temp. Range | Package | Packing Type | Packing Qty | | AAL4002 A-V28A-G-LF | Controller | High Voltage Current Mode LED Controller, Proprietary Current Feedback
| Automotive | Voltage Enhanced 28-Pin QFN | Waffle Pack
| TBD | | AAL4002 A-V28A-G-LF-TR | Controller | High Voltage Current Mode LED Controller, Proprietary Current Feedback | Automotive | Voltage Enhanced 28-Pin QFN | T&R | TBD |
(1) Only RoHS/Lead-Free Packaging is normally offered.
(2) T&R - Tape and Reel
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Download the application note
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