WS3110 データシートの表示（PDF） - Shenzhen Winsemi Microelectronics Co., Ltd
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WS3110 Datasheet PDF : 8 Pages
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Pin Definition and Device Marking
WS3110 is offered in SOP-8 packages，as shown below：
WS3110S8P:
A: Product Code
X: Internal Code
B：Area Code
YM：Year Month
WS3110
Pin Function Description
Pin Name
Pin No.
DIP8/SOP8
CS
1
GND
2
COMP
3
MULT
4
ZCD
5
Pin Type
I
P
I/O
I
I
VCC
6
P
ST
7
P
Source
8
O
Function Description
Current sense input pin
Ground. pin of the IC
Output of the error amplifier, connect a capacitor to ground for loop
compensation
Input of the multiplier, connect this pin to line voltage via a resistor
divider to detect the sinusoidal line voltage
Zero current detection and out voltage feedback pin, connect this
pin through a resistor divider from the auxiliary winding to ground, It
use for out voltage feedback
Supply voltage of the IC
Start-up pin ,connect to the gate of power-mos
Source driver output, connect to the source of power-mos
Block Diagram
c s 15
comp 3
S& H
Current
control
REF
GM
L ine
com pensat i on
PWM
L oad
com pensat i on
Clamp
@ 2V
LED
s hort
mult 4
Mult
Start up
UVLO
8 oSuoturce
L ogic
&
T rans former
saturation
driver
protect
Second-on
detect
LED
OVP
Inter
s uppl y
85 Z C D
2
7
6
gnd
ST
vcc
2/8
Steady, keep you advance
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