ncp1523b ON Semiconductor, ncp1523b Datasheet - Page 8

• Manufacturer Part Number: ncp1523b
• Description: 3 Mhz, 600 Ma, Highefficiency, Adjustable Output Voltage Stepdown Converter
• Manufacturer: ON Semiconductor

−1.0
−3.0
−5.0
3.6
3.4
3.2
3.0
2.8
2.6
2.4
5.0
3.0
1.0
2.8
0
Figure 13. Step Down Converter PFM Mode
V
OUT
Figure 9. Frequency vs. Input Voltage
V
100
OUT
I
OUT
= 2.0 V
I
3.3
OUT
= 0.9 V
Figure 11. Load Regulation
I
OUT
= 400 mA
= 600 mA
V
200
, OUTPUT CURRENT (mA)
IN
, INPUT VOLTAGE (V)
Operation
3.8
300
4.3
400
NCP1523 CHARACTERISTICS
4.8
500
http://onsemi.com
NCP1523
600
5.3
8
300
250
200
150
100
3.6
3.4
3.2
3.0
2.8
2.6
2.4
50
0
2.7
−40
Figure 14. Step Down Converter PWM Mode
Figure 12. PFM/PWM Threshold vs. Input
Figure 10. Frequency vs. Temperature
−20
3.2
V
IN
TEMPERATURE (°C)
0
, INPUT VOLTAGE (V)
3.7
Operation
Voltage
20
I
4.2
OUT
I
OUT
40
= 600 mA
= 400 mA
4.7
60
5.2
80