AL1794AFE-13

AL1791/1792/1793/1794 Single/Dual/Triple/Quad-Channel Current-Ratio-Optimized LED Driver with Analog and PWM Dimming U-DFN-4030-14 ADVANCED INFORMATIO Description Pin Assignments The AL1791/1792/1793/1794 (or collectively AL179x), a single/multichannel LED driver with analog and PWM dimming control, is targeted for Tunable White/Color Smart Lighting application. It serves as the LED driving element along with AC-DC Power Conversion Block and Intelligent wireless MCU as an emerging smart-connected lighting system configuration. The key merits attribute to costeffectiveness, dimming performance, low standby power, ease of system implementation, and great scalability. AL1791, AL1792, AL1793, and AL1794 are 1-channel, 2-channel, 3-channel, and 4channel LED drivers, respectively. Top View (U-DFN4030-14) EN 1 14 VIN PWM4/GND 2 13 REF PWM3/GND 3 12 FAULTB PWM2/GND 4 11 LEDPG PWM1 5 10 LED4/GND LED1 6 9 LED3/GND LED2/GND 7 8 GND The IC is available in U-DFN-4030-14 package. Features Applications                Input Voltage Range: 6.5V to 30V 1/2/3/4-channel LED drivers: independent Analog or PWM dimming control for each channel Reference Current: Adjustable by an external reference resistor Ratio-optimized currents for 4 independent LED channels (AL1794 only): Suitable for Tunable White and Tunable Color Low Standby Power: With EN pin E-flicker free High Frequency PWM dimming with Deep Dimming  Capability: Support 10KHz down to 1.0%, 4KHz down to 0.4%, or 1KHz down to 0.1% Internal Protections: Under Voltage Lockout (UVLO), LED string open/short protection Over-temperature protection (OTP): Thermal shutdown and auto thermal recovery Fault Reporting: UVLO, OTP, Open, and Short LED Power Good Reporting Low system BOM cost Ambient Temperature Range -40°C to +125°C U-DFN4030-14: Available in “Green” Molding Compound (No Br, Sb) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes:     1-Channel Dimmable Smart Connected Light (SCL) Bulbs 2-Channel Tunable White SCL Bulbs 3-Channel Tunable White or Color SCL Bulbs 4-Channel Tunable White+Color SCL Bulbs Smart Connected LED Tubes, Panel Lights, Troffers, and Ceiling Lights 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green", and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain