SAMHOP Microelectronics Corp.
52KHz, 3A PWM Buck Switching Regulator
Θ
JC
Θ
JA
Thermal Resistance
Thermal Resistance
With copper area of
approximately 3 in
2
TO220-5L
TO263-5L
TO220-5L
TO263-5L
Junction to
case
Junction to
ambient
SM8313F
2.5
3.5
28
23
o
C/W
C/W
o
Electrical Characteristics (Continued)
Symbol
V
FB
Parameter
Output
Feedback
Efficiency
Output voltage
Efficiency
Output voltage
Efficiency
Output voltage
Efficiency
Conditions
5V < V
IN
< 40V
0.2A < I
LOAD
< 3A
V
OUT
programmed for
3V
V
IN
= 12V, I
LOAD
=3A
5.5V < V
IN
< 40V
0.2A < I
LOAD
< 3A
V
IN
= 12V, I
LOAD
=3A
8V < V
IN
< 40V
0.2A < I
LOAD
< 3A
V
IN
= 12V, I
LOAD
=3A
15V < V
IN
< 40V
0.2A < I
LOAD
< 3A
V
IN
= 15V, I
LOAD
= 3A
Typ.
1.235
75
3.3
75
5
80
12
90
Limit
1.193/1.18
1.267/1.28
Unit
V
V
MIN
V
MAX
%
SM8313F-ADJ
η
V
OUT
η
V
OUT
η
V
OUT
η
SM8313F-3.3V
3.168/3.135
3.432/3.465
V
V
MIN
V
MAX
%
V
V
MIN
V
MAX
%
V
V
MIN
V
MAX
%
SM8313F-5V
4.8/4.75
5.2/5.25
SM8313F-12V
11.52/11.4
12.48/12.6
Specifications with
boldface type
are for full operating temperature range, the other type are for T
J
=25ºC.
4
V1.0 May 17 ,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
