AL1663R Series

NRND = Not Recommended for New Design

Catalog

NRND = Not Recommended for New Design

Part	Mounting Type	Voltage - Supply (Min) [Min]	Internal Switch(s)	Voltage - Supply (Max)	Operating Temperature [Max]	Operating Temperature [Min]	Dimming	Frequency	Topology	Number of Outputs	Package / Case	Package / Case [y]	Package / Case [x]	Type	Voltage - Output	Applications	Supplier Device Package
Diodes Inc AL1663RS-13	Surface Mount	7 V		30 V	105 °C	-40 °C	Analog PWM	150 kHz	Flyback Step-Down (Buck) Step-Up (Boost)	1	8-SOIC	3.9 mm	0.154 in	AC DC Offline Switcher	20 V	Backlight Lighting	8-SO

Catalog

NRND = Not Recommended for New Design

Key Features

• Primary Side Regulation without Opto-coupler

• Valley Switching for Low Switching Loss

• Low Start-up Current

• High PF and Low THD

• High Efficiency

• Tight LED Current Variation Range

• Tight Output Open Voltage Variation Range

• Support both PWM Dimming and Analog Dimming

• Internal Protections

• Under Voltage Lock Out (UVLO)

• Output Over Voltage Protection (OVP)

• Output Short Protection (OSP)

• Over Current Protection (OCP)

• Thermal Fold-back Protection (TFP)

• Over Temperature Protection (OTP)

• Low System Cost

• Package: SO-8

Description

The AL1663R is a high performance single stage Flyback and Buck-boost controller, targeting dimmable LED lighting application. It is a primary side regulation (PSR) controller which can provide accurate constant current (CC) regulation without optocoupler and secondary control circuitry. It is operating at BCM mode which results in good EMI and efficiency, and keeps high PF and low total harmonic distortion (THD) under universal input voltage.