Owner manual

AP1501
150KHZ, 3A PWM BUCK DC/DC CONVERTER
AP1501 Rev. 11 6 of 12 JANUARY 2009
www.diodes.com © Diodes Incorporated
Typical Performance Characteristics
Typical Performance Characteristic
s
Normalized Output Voltage
4.90
4.95
5.00
5.05
5.10
-50 -25 0 25 50 75 100 125
OUTPUT VOLTAGE (V)
V
IN
=20V, I
LOAD
=3A
Normalized at T
J
=25
o
C
JUNCTION TEMPERATURE(
o
C)
JUNCTION TEMPERATURE(
o
C)
SWITCH CURRENT LIMIT (A)
Switch Current Limit
0.0
5.0
10.0
15.0
20.0
25.0
-50 -25 0 25 50 75 100 125
JUNCTION TEMPERATURE(
o
C)
SUPPLY CURRENT (mA)
Operating Quiescent Current
JUNCTION TEMPERATURE(
o
C)
EFFICIENCY (%)
Efficiency
100
65
70
75
80
85
90
95
810152025
30
35
40
5V
3.3V
3A Load
0.60
0.80
1.00
1.20
1.40
1.60
0.5
1
23
SWITCH CURRENT(A)
SATURATION VOLTAGE (V)
1
2
3
1 : -40
o
C
2 : 25
o
C
3 : 125
o
C
Switch Saturation Voltage
3.50
4.00
4.50
5.00
5.50
-50 -25 0 25 50 75 100 125
V
IN
=12V, V
OUT
=5V
SUPPLY VOLOTAGE (V)
CURRENT (uA)
0.0
40.0
80.0
120.0
160.0
200.0
Shutdown Quiescent Current
10 20 30 40
V
ON/OFF
=5V
1 : -40
o
C
2 : 25
o
C
3 : 125
o
C
1
3
2
Switch ON
Switch OFF