Part Number
|
A8501 |
Manufacturer
|
Allegro MicroSystems |
Description
|
4 Channel x 100 mA WLED/RGB Driver |
Published
|
Dec 25, 2016 |
Detailed Description
|
A8501
2 MHz, 4 Channel×100 mA WLED/RGB Driver with Output Disconnect
FEATURES AND BENEFITS
• 600 kHz to 2.2 MHz switchi...
|
Datasheet
|
A8501
|
Overview
A8501
2 MHz, 4 Channel×100 mA WLED/RGB Driver with Output Disconnect
FEATURES AND BENEFITS
• 600 kHz to 2.
2 MHz switching frequency—ability to operate above the AM band
• Internal bias supply for single-supply operation (VIN = 6.
8 to 21 V)
• Boost converter with integrated 40 V DMOS switch and OVP–load-dump protection
• 3.
5 µA shutdown current—limits battery drain • Active current sharing between LED strings for
0.
8% current matching and 0.
7% accuracy • Drive up to 9 series LEDs in 4 parallel strings, 36 LEDs
maximum (Vf = 3.
5 V, If = 100 mA) • LED sinks rated for 100 mA each (400 mA total) • PWM dimming with LED PWM duty cycle control • 4000:1 dimming range • Extensive fault mode protectio...
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