SAMHOP Microelectronics Corp.
52KHz, 3A PWM Buck Switching Regulator
Typical Performance Characteristics (Continued)
Minimum Operating Supply Voltage
5.0
4.0
SUPPLY VOLTAGE
(V)
THRESHOLD VOLTAGE
(V)
SM8313F
ON /OFF Threshold Voltage
5.0
4.0
3.0
2.0
1.0
0.0
3.0
2.0
1.0
0.0
-50 -25
0
25
50
75 100 125
JUNCTION TEMPERATURE (
o
C)
V
OUT
=1.23V
I
LOAD
=120mA
-50 -25
0
25
50
75 100
125
JUNCTION TEMPERATURE (
o
C)
ON/OFF Pin Current (Sinking )
150.0
120.0
CURRENT
(uA)
Switch Frequency
68.0
90.0
60.0
30.0
0.0
FREQUENCY
(kHz)
V
IN
=40V
-40
o
C≤ T
j
≤
125
o
C
51.0
34.0
17.0
0.0
1.4
5
10
15
20 22
23
24
25
-50 -25
0
25
50
75
100
125
ON/OFF PIN VOLTAGE (V)
JUNCTION TEMPERATURE (
o
C)
Feedback Pin Bias Current
50.0
BIAS CURRENT
(nA)
Thermal protection
10
Output voltage Vo(V)
40.0
30.0
20.0
10.0
0.0
-50 -25
0
25
50
75
100
125
8
6
4
2
TSC OFF
TSD ON
Adjustable Version Only
0
JUNCTION TEMPERATURE (
o
C)
50
75
100
125
150
175
200
JUNCTION TEMPERATURE (
o
C)
6
V1.0 May 17 ,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
