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AL1698

DIMMABLE LED DRIVER

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Description

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.

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%.

Feature(s)

  • Tight Current Sense Tolerance : ± 3%
  • Low Startup Current: 100µA Typical
  • 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
  • Internal Protections
    • 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)

Application(s)

  • Mains dimmable LED lamps/Offline LED Power Supply

Product Specifications

Product Parameters

Minimum Input AC Voltage (VAC) 85
Maximum Input AC Voltage (VAC) 265
Maximum DC VDD (VDC) 10.5
LED Current (mA) 300
Frequency (kHz) 200
Accuracy (%) 3 %
Efficiency (%) 85 %
Dimming Triac
SupplyCurrent (mA) 0.31 mA
Temperature Range (°C) -40 to 105 °C

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Technical Documents

Evaluation Boards and User Guides

Calculators

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

Orderable Part Number Buy from Distributor / Contact Sales Request Samples
AL1698-20CS7-13

AL1698-20CS7-13

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 92760 9/30/2022 South America, North America, Asia, Europe, Middle East Buy Now
Digi-Key Electronics 2350 9/29/2022 Europe, Asia, North America Buy Now
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