AL1666 Series

HIGH PERFORMANCE DIMMABLE LED CONTROLLER

Catalog

HIGH PERFORMANCE DIMMABLE LED CONTROLLER

Part	Dimming	Internal Switch(s)	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Topology	Voltage - Supply (Min) [Min]	Type	Supplier Device Package	Number of Outputs	Frequency	Voltage - Output
Diodes Inc AL1666S-13	Analog PWM		8-SOIC	3.9 mm	0.154 in	Surface Mount	105 °C	-40 °C	Flyback Step-Down (Buck) Step-Up (Boost)	8.5 V	DC DC Controller	8-SO	1	150 kHz	400 mV

Catalog

HIGH PERFORMANCE DIMMABLE LED CONTROLLER

Key Features

• Primary Side Regulation without Opto-Coupler

• Valley Switching for Low Switching Loss

• Support Analog and PWM-to-DC Dimming

• Analog/PWM-to-DC Dimming Range: 1% to 100%

• Tight CS Reference Voltage 0.4V±1.5%

• High PF>0.9 and Low THD<20%

• High Efficiency

• Internal ProtectionsUnder Voltage Lock Out (UVLO)Output Over Voltage Protection (OVP)Output Short Protection (OSP)Over Current Protection (OCP)Winding Short Circuit ProtectionSecondary Diode Short ProtectionInternal Thermal Fold-back Protection (TFP)Over Temperature Protection (OTP)

• Under Voltage Lock Out (UVLO)

• Output Over Voltage Protection (OVP)

• Output Short Protection (OSP)

• Over Current Protection (OCP)

• Winding Short Circuit Protection

• Secondary Diode Short Protection

• Internal Thermal Fold-back Protection (TFP)

• Over Temperature Protection (OTP)

• Tight LED Current Variation RangeLED Current Line Regulation: ±2% (90VAC to 305VAC)LED Current Load Regulation: ±2% Full Load to Half Load

• LED Current Line Regulation: ±2% (90VAC to 305VAC)

• LED Current Load Regulation: ±2% Full Load to Half Load

• Package: SO-8 (Standard)

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. "Green" Device (Note 3)

• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAPcapable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative.https://www.diodes.com/quality/product-definitions/

Description

The AL1666 is a high performance single stage Flyback and Buckboost controller, targeting dimmable LED lighting application. It is a primary side regulation (PSR) controller which can provide accurate Constant Current (CC) regulation without opto-coupler and secondary control circuitry. It is operating at BCM mode which results in good EMI and efficiency, and keeps high PF and low THD under universal input voltage.