AL1771/1772 PFC CONTROLLER + SINGLE/DUAL DIMMABLE LINEAR LED DRIVER Description Pin Assignments The AL1771/1772 is a high integration chip with an Offline High Power Factor Correction (PFC) controller and a single/dual-channel (Top View) Linear LED driver in one package. AL1771/1772 implements an optimized 2-stage topology for a wide power range of Connected TP 16 1 FAULTB Lighting applications. It is targeted for 1-Channel Dimmable and 2- Channel Tunable White and various Connected Lighting applications. REF1 2 15 LEDPG DVCC 3 14 FB Based on Primary Side Regulation (PSR) implementation, the PFC NC 4 13 COMP controller does not require Opto-coupler and any secondary feedback EP circuit to save overall BOM cost and it operates at Quasi-Resonant PWM1 5 12 AVCC (QR) mode where MOSFET is turned on at the valley of the drain DGND 6 11 GD voltage, which minimizes switching loss and results in high efficiency. NC 7 10 AGND The key merits of the Single/Dual Dimmable Linear LED driver 8 9 CS LED1 attribute to excellent dimming performance, low standby power, ease of system implementation, and great product scalability. It supports E- flicker free High Frequency PWM dimming with Deep Dimming TSSOP-16EP (Type DX) (AL1771) 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. (Top View) When no PWM signal is detected by AL1771/1772, the LED driver Section will automatically enter the low-power mode for power saving REF2 1 16 FAULTB purpose to be in compliance with Energy Star standby power requirement for Connected Lighting. Integrates Adaptive Thermal REF1 2 15 LEDPG Management (ATM) scheme to minimize non-productive power 3 14 DVCC FB dissipation. PWM2 4 13 COMP EP The AL1771/1772 has protection features to ensure robust and safety PWM1 5 12 AVCC operation of the Connected Lighting systems. The AL1771/1772 can DGND 6 11 GD support applications with LED current (Up 1500mA) and is available in low thermal resistance package TSSOP-16EP (Type DX). LED2 7 10 AGND 8 9 CS LED1 Features TSSOP-16EP (Type DX) (AL1772) High PFC Controller and Dimmable Linear LED Driver in One Package Valley Detection to Achieve Low Switching Loss and High Efficiency Applications Input Voltage Range for LED Driver (DVCC): 6.5V to 30V 1-Channel Dimmable Connected Light Bulbs Each Channel Independent PWM Dimming Control 2-Channel Tunable White Connected Bulbs Adjustable Reference Current by External Reference Resistors Smart Connected LED Tubes, Panel Lights, Troffers, and Ceiling LED Current Accuracy 4% Lights Maximum LED Current 1500mA for AL1771 and 750mA Per Channel to AL1772 Adaptive Thermal Management (ATM) Scheme to Minimize Power Dissipation Low Standby Power Mode with Automatically Enter and Exit High Frequency E-Flicker Free PWM Dimming with Deep Dimming Capability Protections: PFC Controller: Under Voltage Lockout (UVLO) Over Voltage Protection (OVP) Over Current Protection (OCP) Output Short Protection (OSP) Over-Temperature Protection (OTP): Thermal Shutdown and Auto Thermal Recovery Dimmable Linear LED Driver: Under Voltage Lockout (UVLO) LED String Open/Short Protection Over-temperature Protection (OTP): Thermal Shutdown and Auto Thermal Recovery Fault Reports: UVLO, OTP, LED Open/Short Low System BOM Ambient Temperature Operating Range -40C to +125C TSSOP-16EP (Type DX): 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. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See AL1771/1772 Typical Applications Circuit 85~265Vac VLED C1 D1 C2 R7 AVCC VMCU3(3V) D3 R2 DVCC D2 C5 COMP C3 C4 C7 Q1 R5 GD AL1771 CS R6 RCS FB RLEDPG LEDPG LED1 REF1 RFAULTB VMCU3(3V) R SET1 FAULTB Wireless/Color PWM1 Management MCU AGND DGND EP Figure 1. 1-Channel Dimmable White 2 of 24 AL1771/1772 August 2018 Diodes Incorporated www.diodes.com Document number: DS41314 Rev. 1 - 2 NEW PRODUCT