4
Rev. 1.0
10/20/04
IRDC3065
www.irf.com
Frequency (KHz) versus load current
0
100
200
300
400
500
600
700
800
900
0
200
400
600
800
1000
Iout(mA)
Frequency(kHz)
Vout(V) vs Iout(mA)
0
1
2
3
4
5
6
0
200
400
600
800
1000
Iout(mA)
Vout(V)
Frequency versus load current. (Vout=-5V,
Iocp=400mA)t
Output voltage (absoutle value) versus load curren
(Vout=-5V, Iocp=400mA)t
Efficiency versus load current
50
55
60
65
70
75
0
100
200
300
400
Iout(mA)
Efficiency(%)
Efficiency(%) with diode
Efficiency(%) with 100 resistor
Efficiency with 1.2uH inductor, 800k Hz opera-
tion
Operation Characteristics
Efficiency with 4.7uH inductor, 250kHz operation
Efficiency versus load current
50
55
60
65
70
75
0
100
200
300
400
Iout(mA)
Efficiency(%)
Efficiency(%) with diode
Efficiency(%) with 100ohm resistor