ncp1423 ON Semiconductor, ncp1423 Datasheet - Page 9

• Manufacturer Part Number: ncp1423
• Description: 400 Ma Sync-rect Pfm Stepup Dcdc Converter With Truecutoff And Ringkiller
• Manufacturer: ON Semiconductor

Figure 27. Line Transient Response for V
Figure 29. Load Transient Response For V
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Load Current, I
(V
OUT
Upper Trace: Output Voltage, 2.0 V/Division
Lower Trace: Output Current, 50 mA/Division
Middle Trace: Enable Pin Waveform, 1.0 V/Division
(V
Upper Trace: Output Voltage Ripple, 50 mV/Division
Lower Trace: Battery Voltage, V
(V
Figure 31. Startup Waveform (ADEN Disabled)
IN
IN
= 3.3 V, I
= 1.5 V, V
= 1.2 V to 2.0 V; L = 5.6 mH, C
LOAD
OUT
= 10 mA to 200 mA; L = 5.6 mH, C
= 3.3 V, L = 5.6 mH, C
LOAD
, 100 mA/Division
IN,
1.0 V/Division
OUT
= 22 mF, I
IN
TYPICAL OPERATING CHARACTERISTICS
= 10 mF, C
LOAD
OUT
OUT
OUT
= 50 mA)
IN
= 22 mF)
= 22 mF)
= 1.5 V
= 3.3 V
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NCP1423
9
Figure 28. Line Transient Response For V
Figure 30. Load Transient Response For V
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Load Current, I
(V
Upper Trace: Output Voltage, 2.0 V/Division
Lower Trace: Output Current, 50 mA/Division
Middle Trace: Enable Pin Waveform, 1.0 V/Division
(V
OUT
IN
Figure 32. Startup Waveform (ADEN Enabled)
Upper Trace: Output Voltage Ripple, 50 mV/Division
Lower Trace: Battery Voltage, V
(V
= 1.5 V, V
IN
= 1.8 V, I
= 1.0 V to 1.6 V; L = 5.6 mH, C
OUT
LOAD
= 3.3 V, L = 5.6 mH, C
= 10 mA to 100 mA; L = 5.6 mH, C
LOAD
, 100 mA/Division
IN,
1.0 V/Division
OUT
IN
= 22mF, I
= 10 mF, C
LOAD
OUT
OUT
OUT
= 50 mA)
IN
= 22 mF)
= 22 mF)
= 1.8 V
= 1.0 V