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