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參數(shù)資料
| 型號(hào)： | NCP1421D |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 600 mA Sync-Rect PFM Step-Up DC-DC Converter Step-Up DC-DC Converter with True-Cutoff and Ring-Killer |
| 中文描述： | 600毫安同步整流PFM升壓型DC - DC轉(zhuǎn)換器升壓型DC - DC轉(zhuǎn)換器與True - Cutoff和Ring殺手 |
| 文件頁(yè)數(shù)： | 8/14頁(yè) |
| 文件大?。?/td> | 116K |
| 代理商： | NCP1421D |
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NCP1421
http://onsemi.com
8
TYPICAL OPERATING CHARACTERISTICS
(V
IN
= 2.5 V, V
OUT
= 3.3 V, I
LOAD
= 50 mA; L = 5.6 H, C
OUT
= 22 F)
Upper Trace: Output Voltage Ripple, 20 mV/Division
Lower Trace: Voltage at Lx pin, 1.0 V/Division
Figure 20. Discontinuous Conduction Mode
Switching Waveform
(V
IN
= 2.5 V, V
OUT
= 3.3 V, I
LOAD
= 500 mA; L = 5.6 H, C
OUT
= 22 F)
Upper Trace: Output Voltage Ripple, 20 mV/Division
Lower Trace: Voltage at LX pin, 1.0 V/Division
Figure 21. Continuous Conduction Mode
Switching Waveform
Figure 22. Line Transient Response for V
OUT
= 3.3 V
Figure 23. Line Transient Response For V
OUT
= 5.0 V
(V
IN
= 1.5 V to 2.5 V; L = 5.6 H, C
OUT
= 22 F, I
LOAD
= 100 mA)
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Battery Voltage, V
IN,
1.0 V/Division
(V
IN
= 1.5 V to 2.5 V; L = 5.6 H, C
OUT
= 22 F, I
LOAD
= 100 mA)
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Battery Voltage, V
IN,
1.0 V/Division
Figure 24. Load Transient Response For V
IN
= 2.5 V
Figure 25. Load Transient Response For V
IN
= 3.0 V
(V
OUT
= 5.0 V, I
LOAD
= 50 mA to 500 mA; L = 5.6 H, C
OUT
= 22 F)
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Load Current, I
LOAD
, 500 mA/Division
(V
OUT
= 3.3 V, I
LOAD
= 50 mA to 500 mA; L = 5.6 H, C
OUT
= 22 F)
Upper Trace: Output Voltage Ripple, 50 mV/Division
Lower Trace: Load Current, I
LOAD
, 500 mA/Division
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