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FL7701 — Smart LED Lamp Driver IC with PFC Function
June 2013
FL7701
Smart LED Lamp Driver IC with PFC Function
Features
Digitally Implemented Active PFC Function
(No Additional Circuit Necessary for High PF)
Built-in HV Supplying Circuit: Self Biasing
Application Input Range: 80 V
AC
~ 308 V
AC
AOCP Function with Auto-Restart Mode
Built-in Over-Temperature Protection Function
Cycle-by-Cycle Current Limit
Current-Sense Pin Open Protection
Low Operating Current: 0.85 mA (Typical)
Under-Voltage Lockout with 5 V Hysteresis
Programmable Oscillation Frequency
Programmable LED Current
Analog Dimming Function
Soft-Start Function
Precise Internal Reference: ±3%
Description
The FL7701 LED lamp driver is a simple IC with PFC
function. The special “adopted digital” technique of the
IC can automatically detect input voltage condition and
send an internal reference signal for achieving high
power factor. When AC input is applied to the IC, PFC
function is automatically enabled. Otherwise, when DC
input is applied to the IC, PFC function is automatically
disabled. The FL7701 does not need a bulk capacitor
(electrolytic capacitor) for supply rail stability, which can
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Embedded System
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