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High PF, Offline Dimmable LED Driver with Internal High-Voltage MOSFET

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The AL1697 is a high performance, high power factor, high efficiency and high precision buck-boost LED driver for mains dimmable LED lamp applications. The AL1697 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 AL1697 with built in MOSFET solution reduces the bill of material (BOM) cost by eliminating the need of auxiliary winding and an external high voltage MOSFET. The AL1697 has extensive protection features to enhance system safety and reliability. The AL1697 starts reducing output current when the driver’s temperature is higher than the built-in thermal foldback protection trigger point.


  • Two Internal High-Voltage MOSFET Options:
    • RDSON 4Ω and 1.8Ω for Super-Junction
  • Tight Current Sense Tolerance : ± 3%
  • Low Startup Current: 130μA
  • Low Operation Current: 170μA (Switching Frequency at 4kHz)
  • Single Winding Inductor
  • Wide Range of Dimmer Compatibility
  • NEMA SSL6 Dimming Curve Compliant
  • Internal Protections
  • Undervoltage Lockout (UVLO)
  • Leading-Edge Blanking (LEB)
  • Cycle-by-cycle Overcurrent Protection (OCP)
  • Output Open/Short Protection (OVP/OSP)
  • Thermal Foldback Protection (TFP)
  • Overtemperature Protection (OTP)
  • SO-7 Package


  • Mains Dimmable LED Lamps
  • Offline LED Power Supply Driver

Product Specifications

Product Parameters

Minimum Input AC Voltage (VAC) 85
Maximum Input AC Voltage (VAC) 265
Maximum DC VDD (VDC) 18
LED Current (mA) 180, 230
Frequency (kHz) 200
Accuracy (%) 3 %
Efficiency (%) 85 %
Dimming Triac
SupplyCurrent (mA) 0.17 mA
Temperature Range (°C) -40 to 105 °C

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Orderable Part Number Buy from Distributor / Contact Sales Request Samples


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Arrow/Components Agent Ltd. 4000 10/4/2022 Hong Kong Buy Now
Mouser Electronics Inc. 53997 10/4/2022 South America, North America, Asia, Europe, Middle East Buy Now
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