Marking Information
OB2273
High Performance Current Mode PWM Controller
73YWW
S
科
Y:Year Code
WW:Week Code(01-52)
S:Internal Code(Optional)
乐
to
tial TERMINAL ASSIGNMENTS
n Pin Name
e GND
d FB
i RT
nf CS
o VDD
C Gate
I/O Description
P Ground
I
Feedback input pin. The PWM duty cycle is determined by voltage level into this pin
and the current-sense signal at Pin 4.
Dual function pin. Either connected through a NTC resistor to ground for over
I temperature shutdown/latch control or connected through Zener to VDD for
adjustable over voltage protection
I Current sense input
P Power Supply
O Totem-pole gate driver output for power Mosfet
RECOMMENDED OPERATING CONDITION
t Symbol
h VDD
Brig TA
Parameter
VDD Supply Voltage
Operating Ambient Temperature
Min/Max
12 to 25
-40 to 85
Unit
V
℃
On
©On-Bright Electronics
Confidential
-3-
Preliminary Datasheet
OB_DOC_DS_227305