UPSR100_15 Datasheet, PDF (2/7 Pages) Unisonic Technologies – HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH

UPSR100
 MARKING
Preliminary
 PIN CONFIGURATION
CMOS IC
 PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
CS
V_CC
OUT
GND
FB
V_DD
BIAS
COMP
DESCRIPTION
Current sense input.
Power supply.
Base drive for power BJT.
Ground.
The voltage feedback from the auxiliary winding
The 5V output of the internal voltage regulator
This pin sets the bias current inside UTC UPSR100 with an external resistor to GND
This pin connects a bypass capacitor
 BLOCK DIAGRAM
V_CC ²
V_DD
6
5V
Regulator ^Por
& V_REF
BIAS
7
Ibias _IREF
8V ₊
-
OVP ^{Logic core}
Base
drive
3 OUT
FB 5
+
4V ^-
CV
controller
Tdemag
detector
CC
controller
4
GND
8
COMP
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
+
1 CS
-
0.43V
LEB
+
-
0.5V
2 of 7
QW-R502-946.d