ncp3121 ON Semiconductor, ncp3121 Datasheet - Page 11

• Manufacturer Part Number: ncp3121
• Description: Dual 3.0 A, Step-down Dc/dc Switching Regulator
• Manufacturer: ON Semiconductor

90
85
80
75
70
65
60
55
0
750 kHz
200 kHz
500 kHz
0.5
Figure 25. NCP3121 Efficiency,
V
in
= 12 V, V
1.0
I
out
out
1.5
(A)
0.50
0.45
0.40
0.35
0.30
0.25
0.20
= 3.3 V, 255C
TYPICAL OPERATING CHARACTERISTICS
4
2.0
5
Figure 27. R
6
2.5
12 V
http://onsemi.com
7
NCP3121
3.0
Vin = AVin (V)
DS(on)
8
11
9
vs. Input Voltage
95
90
85
80
75
70
65
60
55
10
0
200 kHz
750 kHz
11
0.5
12
Figure 26. NCP3121 Efficiency,
500 kHz
V
13
in
= 12 V, V
1.0
14
I
out
out
1.5
(A)
= 5 V, 255C
2.0
2.5
12 V
3.0