UNIVERSAL HIGH VOLTAGE STEP DOWN CONVERTER
The AL17050 is a universal AC high voltage input step down regulator
that provides accurate constant voltage (CV) and outstanding
dynamic performance without requiring an opto-coupler over line and
Load regulation. Typical applications are offline low power
applications including home appliance applications and IoT
Working with a single winding inductor and integrating a 500V
MOSFET internal can make it use fewer external components and
create a low Bill Of Material (BOM) cost solution.
The AL17050 achieves excellent regulation and high power efficiency.
The characteristics of max peak current and driving frequency vary as
the load change can get excellent efficiency performance at light load
and improve the overall average efficiency.
The AL17050 has rich protection features to enhance the system
safety and reliability. It has Over Temperature Protection, VCC Under
Voltage Lock function, Output Short Protection, Over Load Protection
and Open Loop Protection.
The AL17050 is available in the SOT25 package.
Home Appliance Applications
Universal 85 to 265 VAC Input Range
Constant Voltage (CV) Control
Internal MOSFET up to 500V
Low Operation Current: 100µA (Static)
Under Voltage Lock Out (UVLO)
Output Short Protection
Over Load Protection
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"
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: DS40584 Rev. 2 - 2
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