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AL1782

Diodes
Part Number AL1782
Manufacturer Diodes
Description Single/Dual Dimmable Linear LED Driver
Published May 14, 2019
Detailed Description NOT RECOMMENDED FOR NEW DESIGN USE AL1783 AL1781/1782 SINGLE/DUAL DIMMABLE LINEAR LED DRIVER Description The DIODES™ ...
Datasheet PDF File AL1782 PDF File

AL1782
AL1782

Overview
NOT RECOMMENDED FOR NEW DESIGN USE AL1783 AL1781/1782 SINGLE/DUAL DIMMABLE LINEAR LED DRIVER Description The DIODES™ AL1781/1782, a single/dual-channel dimmable Linear LED driver with PWM dimming control, is targeted for 1-Channel dimmable and 2-Channel tunable Smart Connected Lighting (SCL) applications.
It serves as the LED driving element along with AC-DC Power Conversion Block and Intelligent wireless MCU as an emerging connected lighting applications.
The AL1781/1782 key merits attribute to dimming performance, low standby power, ease of system implementation and great scalability.
It supports High Frequency E-flicker free PWM dimming with Deep Dimming Capability: Support 40kHz down to 4%, 10kHz down to 1.
0%, 4kHz down to 0.
4%, or 1kHz down to 0.
1% with good dimming linearity.
When no PWM signal is detected by AL1781/1782, it will automatically enter the low-power mode for power saving purpose to be in compliance with Energy Star standby power requirement for connected lighting requirements.
Integrates Adaptive Thermal Management (ATM) scheme to minimize non-productive power dissipation.
The AL1781/1782 has protection features, including Under-VoltageLockout (UVLO), LED string Open/Short protection and Overtemperature protection (OTP).
AL1781 is a single channel and AL1782 is a dual-channel LED driver.
They can support high LED current (up to total 1500mA) applications and they are available in Low thermal resistance TSSOP-16EP (Type DX) package.
Features  Input Voltage Range: 6.
5V to 30V  Independent PWM Dimming Control for Each Channel  Adjustable Reference Current by External Reference Resistors  LED Current Accuracy ≤ ±4%  Maximum LED Current 1500mA for AL1781 and 750mA Per Channel for AL1782  Adaptive Thermal Management (ATM) Scheme to Minimize Power Dissipation  Automatically Enter and Exit Low Standby Power Mode  High Frequency E-flicker Free PWM Dimming  Internal Protections:  Under Voltage Lockout (UVLO);  LED String Open/Short Protection...


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