NCP1550D ON, NCP1550D Datasheet - Page 5

• Manufacturer Part Number: NCP1550D
• Description: 600 kHz PWM/PFM Step-Down DC-DC Controller
• Manufacturer: ON

100
80
60
40
20
0
1
Figure 3. Efficiency versus Load Current
I
V
LOAD
IN
= 4.0 V
, OUTPUT LOADING CURRENT (mA)
10
100
5.0 V
80
60
40
20
0
1
TYPICAL OPERATING CHARACTERISTICS
NCP1550SN33T1
L = 3.3 mH
C
C
M = NTGS3441T1
SD = MBRM120LT3
IN
OUT
100
Figure 5. Efficiency versus Load Current
= 33 mF
I
LOAD
= 33 mF
, OUTPUT LOADING CURRENT (mA)
V
IN
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= 3.0 V
10
1000
NCP1550
5
4.0 V
100
NCP1550SN18T1
L = 6.8 mH
C
C
M = NTGS3441T1
SD = MBRM120LT3
80
60
40
20
IN
OUT
0
100
= 33 mF
1
= 33 mF
5.0 V
Figure 4. Efficiency versus Load Current
V
I
IN
LOAD
4.0 V
= 3.0 V
, OUTPUT LOADING CURRENT (mA)
1000
10
NCP1550SN25T1
L = 5.6 mH
C
C
M = NTGS3441T1
SD = MBRM120LT3
5.0 V
IN
OUT
100
= 33 mF
= 33 mF
1000