FLS3217 datasheet(3/15 Pages) ONSEMI

Part #	FLS3217

Description	Single-Stage PFC Primary-Side-Regulation Offline LED Driver

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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FLS3217 / FLS3247 • Rev. 1.0.1

2

Application Diagram

TRANS

BRIDGE DIODE

FUSE

LINE INPUT

VDD

COMI

GND

DRAIN

NC

CS

2

5

3

7

6

1

VS 4

Figure 1.

Typical Application

Internal Block Diagram

S

R

Q

2

Internal

Bias

5

VDD

COMI

OSC

TRUECURRENT®

Calculation

LEB

Gate

Driver

7

DRAIN

1 CS

VREF

4

VS

6

NC

+

-

3

GND

Sawtooth

Generator

VOCP

S

R

Q

VOVP

VDD Good

TSD

Shutdown

DCM Frequency

Controller

VS

Freq.

Error

Amp.

tDIS

Detector

OCP Level

Controller

VS

-

+

-

+

Auto Restart Protection:

OVP (Over-Voltage Protection)

UVLO (Under-Voltage Lockout)

OTP (Over-Temperature Protection)

Sample & Hold

Max. Duty

Controller

Figure 2.

Functional Block Diagram

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