DIMMABLE LED DRIVER
The AL1698 is a high performance, high power factor, high efficiency,
and high current precision buck-boost and flyback dimmable LED
driver for triac dimmable LED lamp applications. The AL1698
topology provides an accurate output current over wide line and load
regulation. The wide switching frequency operates at Boundary
Conduction Mode (BCM) to ease EMI/EMC design and testing, to
meet the latest regulatory standards.
The AL1698 LED driver has a built-in high voltage JFET, which
provides the system fast start-up time and enables users an easy and
stable VCC supply design. The AL1698 also integrates a 600V/2A high
voltage MOSFET. It can cover 230VAC triac dimmable applications
with eliminating the external high voltage MOSFET and VCC startup
resistors, which will reduce the system BOM cost. The AL1698 has
the built-in thermal fold-back protection trigger point to automatically
reduce output current. Other protection features enhance LED lighting
system's safety and reliability.
Mains Dimmable LED Lamps
Offline LED Power Supply Driver
The AL1698 dimming curve is compliant with the NEMA SSL6
standard. The AL1698 applies to a wide range of dimmers, including
leading edge and trailing edge dimmer, to achieve deep dimming
down to 1%.
The AL1698 is available in SO-7 package.
Tight Current Sense Tolerance : ±3%
Low Operation Current : 310µA
Single Winding Inductor
Wide Range of Dimmer Compatibility
Integration of 600V/2A MOSFET
Integration of HV JFET
NEMA SSL6 Dimming Curve Compliant
Under Voltage Lockout (UVLO)
Leading-Edge Blanking (LEB)
Cycle-By-Cycle Over Current Protection (OCP)
Output Open/Short Protection (OVP/OSP)
Thermal Foldback Protection (TFP)
Over Temperature Protection (OTP)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
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 https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Document number: DS42216 Rev. 1 - 2
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