ncp1521 ON Semiconductor, ncp1521 Datasheet - Page 5

• Manufacturer Part Number: ncp1521
• Description: 1.5 Mhz, 600 Ma, Highefficiency, Low Quiescent Current, Adjustable Output Voltage Stepdown Converter
• Manufacturer: ON Semiconductor

100
100
1.0
0.8
0.6
0.4
0.2
90
80
70
60
50
40
30
20
10
90
80
70
60
50
0
0
2.7
2.7
0
EN = V
I
Figure 7. Shutdown Current vs. Supply Voltage
Figure 5. Quiescent Current vs. Supply Voltage
OUT
Figure 9. Efficiency vs. Output Current
= 0 mA
3.2
IN
100
3.2
T
(V
I
A
OUT
V
V
OUT
IN
= -40°C
IN
3.7
200
, INPUT VOLTAGE (V)
, OUTPUT CURRENT (mA)
, INPUT VOLTAGE (V)
= 0.9 V, V
3.7
4.2
300
IN
= 3.6 V)
4.7
400
T
A
4.2
= 25°C
EN = V
I
OUT
T
5.2
A
500
= 0 mA
= 85°C
IN
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NCP1521
4.7
5.7
600
5
100
100
100
95
90
85
80
75
70
90
80
70
60
50
40
30
20
10
95
90
85
80
75
70
0
-40
0
0
Figure 6. Quiescent Current vs. Temperature
Figure 10. Efficiency vs. Output Current
Figure 8. Efficiency vs. Output Current
-20
100
100
I
OUT
(V
(V
I
OUT
0
OUT
OUT
, OUTPUT CURRENT (mA)
TEMPERATURE (°C)
200
200
, OUTPUT CURRENT (mA)
= 3.3 V, V
= 1.8 V, V
20
T
A
= -40°C
300
300
T
A
40
IN
IN
= 25°C
= 4.5 V)
= 3.6 V)
400
400
60
T
T
A
A
V
V
= 25°C
= 85°C
IN
IN
T
A
500
500
T
= 5.5 V
= 2.7 V
A
80
= -40°C
= 85°C
600
100
600