SAMHOP Microelectronics Corp.
SM8313F
52KHz, 3A PWM Buck Switching Regulator
ꢀ Ordering Information
XX X X
SM8313F
Package
Output version
Packing
Blank : Tube
-ADJ : Adjustable
-33 : 3.3V
T: TO220-5L
S: TO263-5L
A
: Taping
-50 : 5.0V
-12 : 12V
ꢀ Block Diagram
SD
VIN
200mV
220mV
Current
Source
bias
1.235V
Reference
2.5V
Regulator
Start
up
+
Comp
_
_
Comp
+
+
_
Amp
3A
Switch
_
Comp
+
Pre-driver
FB
Output
Gnd
150kHz
OSC.
Thermal
Limit
2
V1.0 May 17 ,2007