NCP1411 View Datasheet(PDF) - ON Semiconductor

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NCP1411

Sync-Rect PFM Step-Up DC-DC Converter with Low-Battery Detector and Ring-Killer

ON Semiconductor 

NCP1411

(VIN = 2.2 V, VOUT = 3.3 V, ILOAD = 100 mA; L = 22 mH,

COUT = 33 mF)

Upper Trace: Voltage at LX pin, 2.0 V/Division

MiddleTrace: Output Voltage Ripple, 50 mV/Division

Lower Trace: Inductor Current, IL, 100 mA/Division

Figure 21. Continuous Conduction Mode

Switching Waveform

(VIN = 2.2 V, VOUT = 3.3 V, ILOAD = 30 mA; L = 22 mH,

COUT = 33 mF)

Upper Trace: Voltage at LX pin, 2.0 V/Division

MiddleTrace: Output Voltage Ripple, 50 mV/Division

Lower Trace: Inductor Current, IL, 100 mA/Division

Figure 22. Discontinuous Conduction Mode

Switching Waveform

(VIN = 1.8 V to 3.0 V, L = 22 mH, COUT = 33 mF)

Upper Trace: Output Voltage Ripple, 100 mV/Division

Lower Trace: Battery Voltage, VIN, 1.0 V/Division

Figure 23. Line Transient Response

for VOUT = 3.3 V

(VOUT = 3.3 V, ILOAD = 10 mA to 100 mA; L = 22 mH, COUT = 33 mF)

Upper Trace: Output Voltage Ripple, 100 mV/Division

Lower Trace: Load Current, ILOAD, 50 mA/Division

Figure 24. Load Transient Response

for VIN = 1.8 V

(VOUT = 3.3 V, ILOAD = 10 mA to 100 mA; L = 22 mH, COUT = 33 mF)

Upper Trace: Output Voltage Ripple, 100 mV/Division

Lower Trace: Load Current, ILOAD, 50 mA/Division

Figure 25. Load Transient Response

for VIN = 2.4 V

(VOUT = 3.3 V, ILOAD = 10 mA to 100 mA; L = 22 mH, COUT = 33 mF)

Upper Trace: Output Voltage Ripple, 100 mV/Division

Lower Trace: Load Current, ILOAD, 50 mA/Division

Figure 26. Load Transient Response

for VIN = 3.3 V

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