Design contains obsolete parts

FT825-12S480MA: 480mA @ 44V Max, 90 ~ 264V in


The FT825-12S480mA LED driver is an isolated PSR solution, utilizing Fly back topology that works in Boundary Conduction Mode (BCM) with Power Factor Correction (PFC) function. It works under universal AC voltage from 90V to 264V and provides output voltage 25 ~ 44Vdc & output current 0.48A for LED strings.

Few components are used in the FT825-12S480mA LED driver; it increases the power density and reduces the total material cost, in contrast to conventional single stage PFC solution with opto-coupler and secondary CC/CV circuit. Meanwhile, the PSR controller IC FT825 is combined with optimized system design, which guarantees the LED driver system working in BCM to enhance efficiency for the LED driver.

The design target is to keep the LED driver ultra-thin and highly energy efficient. It facilitates the assembly of the end products LED T8 Tubes while keeping the temperature rise of all components within an acceptable range.


Manufacturer Fremont Micro Devices Ltd
Category Lighting
Sub-Category LED Drivers - AC / Offline
Eval Board Part Number 1219-1149-ND
Eval Board Supplier Fremont Micro Devices Ltd
Eval Board Normally In Stock
AC Voltage 115 V
230 V
Outputs and Type 1 Isolated
Current Out 480 mA
Voltage Out (Max) 44 V
Efficiency @ Conditions >88%, 40V, 480mA @ 124 ~ 246 VACin
Features Current Limit (Adj. or Fixed)
Open Circuit Protection
Over Voltage Protection
Short Circuit Protection
Under Voltage Protection, Brown-Out
Switching Frequency - Not Given
Component Count + Extras 57 + 1
Design Author Fremont Micro Devices USA
Application / Target Market Lighting: LED Commercial Lighting
Lighting: LED Home Lighting
Voltage In 90 ~ 264 VAC
Power Factor 0.93 @ 90~264 VAC
Standard(s) EN55015 B conducted EMI
IEC 61000-3-2 Class C
IEC 61000-4-5 Ringwave
Main I.C. Base Part FT825-RT
Date Created By Author 2012-10
Date Added To Library 2015-09

Eval Board


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