150KHZ 3A PWM BUCK DC/DC CONVERTER
FSP3122
TYPICAL PERFORMANCE CHARACTERISTICS
Normalized Output Voltage
1.5
OUTPUT VOLTAGE CHANGE(%)
V
IN
=20V
1.0
0.5
0
-0.5
-1.0
-1.5
0 25 50 75 100 125
-50 -25
JUNCTION TEMPERATURE(℃)
I
LOAD
=3A
Switch Saturation Voltage
SATURATION VOLTAGE(V)
1.60
1.40
1.20
1.00
1
0.80
0.60
2
3
0.5
1
2
SWITCH CURRENT(A)
3
1:-40℃
2:25℃
3:125℃
V
IN
=12V
Normalixed at T
J
=25℃
Dropout Voltage
INPUT-OUTPUT DIFFERENTIAL (V)
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0 25 50 75 100 125
-50 -25
JUNCTION TEMPERATURE(℃)
I
LOAD
=1A
L=33µH R
IND
=0.04O
V
OUT
=V
REG
-50mV
FREQUENCY (KHz)
160
155
150
145
140
135
130
Switching Frequency
I
LOAD
=3A
-50 -25
0
25
50 75 100 125
JUNCTION TEMPERATURE(℃)
4/10
2007-6-12