Datasheet NCP1421 (ON Semiconductor) - 8
| Manufacturer | ON Semiconductor |
| Description | Boost Converter - Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 600 mA |
| Pages / Page | 14 / 8 — NCP1421. TYPICAL OPERATING CHARACTERISTICS. Figure 20. Discontinuous … |
| Revision | 7 |
| File Format / Size | PDF / 273 Kb |
| Document Language | English |
NCP1421. TYPICAL OPERATING CHARACTERISTICS. Figure 20. Discontinuous Conduction Mode. Figure 21. Continuous Conduction Mode
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NCP1421
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NCP1421 TYPICAL OPERATING CHARACTERISTICS
(VIN = 2.5 V, VOUT = 3.3 V, ILOAD = 50 mA; L = 5.6 H, COUT = 22 F) (VIN = 2.5 V, VOUT = 3.3 V, ILOAD = 500 mA; L = 5.6 H, COUT = 22F) Upper Trace: Output Voltage Ripple, 20 mV/Division Upper Trace: Output Voltage Ripple, 20 mV/Division Lower Trace: Voltage at Lx pin, 1.0 V/Division Lower Trace: Voltage at LX pin, 1.0 V/Division
Figure 20. Discontinuous Conduction Mode Figure 21. Continuous Conduction Mode Switching Waveform Switching Waveform
(VIN = 1.5 V to 2.5 V; L = 5.6 H, COUT = 22F, ILOAD = 100 mA) (VIN = 1.5 V to 2.5 V; L = 5.6 H, COUT = 22F, ILOAD = 100 mA) Upper Trace: Output Voltage Ripple, 100 mV/Division Upper Trace: Output Voltage Ripple, 100 mV/Division Lower Trace: Battery Voltage, VIN, 1.0 V/Division Lower Trace: Battery Voltage, VIN, 1.0 V/Division
Figure 22. Line Transient Response for VOUT = 3.3 V Figure 23. Line Transient Response For VOUT = 5.0 V
(VOUT = 3.3 V, ILOAD = 50 mA to 500 mA; L = 5.6 H, COUT = 22 F) (VOUT = 5.0 V, ILOAD = 50 mA to 500 mA; L = 5.6 H, COUT = 22 F) Upper Trace: Output Voltage Ripple, 50 mV/Division Upper Trace: Output Voltage Ripple, 100 mV/Division Lower Trace: Load Current, ILOAD, 500 mA/Division Lower Trace: Load Current, ILOAD, 500 mA/Division
Figure 24. Load Transient Response For VIN = 2.5 V Figure 25. Load Transient Response For VIN = 3.0 V http://onsemi.com 8
(VIN = 2.5 V, VOUT = 3.3 V, ILOAD = 50 mA; L = 5.6 H, COUT = 22 F) (VIN = 2.5 V, VOUT = 3.3 V, ILOAD = 500 mA; L = 5.6 H, COUT = 22F) Upper Trace: Output Voltage Ripple, 20 mV/Division Upper Trace: Output Voltage Ripple, 20 mV/Division Lower Trace: Voltage at Lx pin, 1.0 V/Division Lower Trace: Voltage at LX pin, 1.0 V/Division
Figure 20. Discontinuous Conduction Mode Figure 21. Continuous Conduction Mode Switching Waveform Switching Waveform
(VIN = 1.5 V to 2.5 V; L = 5.6 H, COUT = 22F, ILOAD = 100 mA) (VIN = 1.5 V to 2.5 V; L = 5.6 H, COUT = 22F, ILOAD = 100 mA) Upper Trace: Output Voltage Ripple, 100 mV/Division Upper Trace: Output Voltage Ripple, 100 mV/Division Lower Trace: Battery Voltage, VIN, 1.0 V/Division Lower Trace: Battery Voltage, VIN, 1.0 V/Division
Figure 22. Line Transient Response for VOUT = 3.3 V Figure 23. Line Transient Response For VOUT = 5.0 V
(VOUT = 3.3 V, ILOAD = 50 mA to 500 mA; L = 5.6 H, COUT = 22 F) (VOUT = 5.0 V, ILOAD = 50 mA to 500 mA; L = 5.6 H, COUT = 22 F) Upper Trace: Output Voltage Ripple, 50 mV/Division Upper Trace: Output Voltage Ripple, 100 mV/Division Lower Trace: Load Current, ILOAD, 500 mA/Division Lower Trace: Load Current, ILOAD, 500 mA/Division
Figure 24. Load Transient Response For VIN = 2.5 V Figure 25. Load Transient Response For VIN = 3.0 V http://onsemi.com 8
