ncp1521b ON Semiconductor, ncp1521b Datasheet - Page 5

• Manufacturer Part Number: ncp1521b
• Description: 1.5 Mhz, 600 Ma Stepdown Dcdc Converter
• Manufacturer: ON Semiconductor

TABLE OF GRAPHS
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
V
V
V
V
V
V
V
Freq
I
STB
Eff
OUT
OUT
OUT
OUT
OUT
OUT
OUT
0
I
q
2.7
Figure 7. Shutdown Current vs. Supply Voltage
EN = 0 V
I
OUT
= 0 mA
Standby Current
Quiescent Current, PFM No Switching
Output Voltage Accuracy
Efficiency
Switching Frequency
Soft-Start
Short Circuit Protection
Line Regulation
Line Transient
Load Regulation
Load Transient
3.2
Typical Characteristics for Step-down Converter
V
IN
3.7
, INPUT VOLTAGE (V)
4.2
4.7
http://onsemi.com
5.2
NCP1521B
5
vs. Input Voltage
vs. Time
vs. Time
vs. Input Voltage
vs. Time
vs. Output Current
vs. Time
vs. Input Voltage
vs. Input Voltage
vs. Temperature
vs. Output Current
35
34
33
32
31
30
29
2.5
Figure 8. Quiescent Current PFM No Switching
EN = V
I
OUT
= 0 mA
3.0
IN
V
IN
3.5
vs. Supply Voltage
, INPUT VOLTAGE (V)
4.0
23, 24, 25 and 26
11, 12, 13 and 29
21, 22 and 30
17 and 18
19 and 20
9 and 10
4.5
Figure
14
15
16
7
8
5.0
5.5