SM8303 Datasheet, PDF (6/11 Pages) SamHop Microelectronics Corp. – 150KHz, 3A PWM Buck Switching Regulator

SAMHOP Microelectronics Corp.
150KHz, 3A PWM Buck Switching Regulator
SM8303
Typical Performance Characteristics (Continued)
Minimum Operating Supply Voltage
ON /OFF Threshold Voltage
5.0
5.0
4.0
4.0
3.0
3.0
2.0
1.0
V_OUT =1.23V
I_LOAD =120mA
0.0
-50 -25 0 25 50 75 100 125
JUNCTION TEMPERATURE ( ^oC)
2.0
1.0
0.0
-50 -25 0 25 50 75 100 125
JUNCTION TEMPERATURE ( ^oC)
150.0
120.0
90.0
ON/OFF Pin Current (Sinking )
V_IN =40V
-40^o C≤ Tj ≤ 125 ^oC
60.0
30.0
0.0
1.4 5 10 15 20 22 23 24 25
ON/OFF PIN VOLTAGE (V)
Feedback Pin Bias Current
50.0
40.0
30.0
20.0
Adjustable Version Only
10.0
0.0
-50 -25 0 25 50 75 100 125
JUNCTION TEMPERATURE ( ^oC)
Switch Frequency
68.0
51.0
34.0
17 .0
0.0
-50 -25 0 25 50 75 100 125
JUNCTION TEMPERATURE ( ^oC)
Thermal protection
10
8
6
4
2
0
50
TSC OFF
TSD ON
75 100 125 150 175 200
JUNCTION TEMPERATURE ( ^o C)
6
V1.0 May 17 ,2007