NCP1532_11 Datasheet, PDF (10/16 Pages) ON Semiconductor – Dual Output Step-Down Converter 2.25 MHz High-Efficiency, Out of Phase Operation, Low Quiescent Current, Source up to 1.6 A

NCP1532
5
4
3
2
1
0
−1
−2
−3
−4
−5
−50
3.6 V
V_BAT = 5.5 V
2.7 V
−25
0
25 50
75 100 125
TEMPERATURE (°C)
Figure 16. Switching Frequency vs.
Temperature
Figure 17. External Synchronization,
F_sync = 2.93 MHz
Figure 18. Soft−Start Typical Behavior
V_IN = 3.6 V, V_OUT1 = V_OUT2 = 1.2 V,
I_OUT1 = I_OUT2 = 600 mA
Figure 19. Current Peak Inductor Protection
V_IN = 3.6 V, V_OUT1 = 1.2 V, I_OUT1 Short to GND,
EN2 = GND
2.5
2.49
2.48
2.47
2.46
2.45
2.44
2.43
2.42
2.41
2.4
2.39
2.38
2.37
2.36
2.35
−50 −25
UVLOrise
UVLOfall
0
25 50
75
TEMPERATURE (°C)
100 125
Figure 20. UVLO Thresholds V_IN = 3.6 V,
I_OUT1 = I_OUT2 = 2 mA
1.2
1.1
1.0
0.9
0.8
V_IH
0.7
0.6
V_IL
0.5
0.4
−50
−25
0
25 50
75 100 125
TEMPERATURE (°C)
Figure 21. Enable Thresholds V_IN = 3.6 V,
I_OUT1 = I_OUT2 = 2 mA
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