參數(shù)資料
型號(hào): NCP1423DMR2
廠商: ON SEMICONDUCTOR
元件分類: 穩(wěn)壓器
英文描述: 400 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and Ring−Killer
中文描述: 1.2 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO10
封裝: MICRO PACKAGE, 10 PIN
文件頁數(shù): 8/13頁
文件大小: 163K
代理商: NCP1423DMR2
NCP1423
http://onsemi.com
8
TYPICAL OPERATING CHARACTERISTICS
0
1.3
50
100
150
200
250
1.7
1.9
2.1
2.3
2.5
Figure 21. Output Ripple Voltage vs. Battery Input
Voltage
Figure 22. No Load Operating Current vs. Input
Voltage at OUT Pin
Figure 23. Low Battery Detect
Figure 24. Startup Transient Response
V
BATT
, BATTERY INPUT VOLTAGE (V)
V
R
,
p
)
100 mA
50 mA
V
OUT
= 3.3 V, L = 5.6 H
C
IN
= 10 F, C
OUT
= 22 F
T
A
= 25
°
C
Upper Trace:
Output Voltage Waveform, 2.0 V/Division
Middle Trace: Input Voltage Waveform, 1.0 V/Division
Lower Trace: Inductor Current Waveform, 500 mA/Division
(V
IN
= 1.8 V, V
OUT
= 3.3 V, L = 5.6 H, I
LOAD
= 60 mA)
2.5
5.0
7.5
10
12.5
15
1.8
2.1
V
OUT
, INPUT VOLTAGE AT OUT PIN (V)
2.4
2.7
3.0
I
B
,
3.3
Upper Trace:
Voltage at LBI Pin, 0.5 V/Division
Lower Trace: Voltage at LBO Pin, 1.0 V/Division
Upper Trace: Output Voltage Ripple, 100 mV/Division
Middle Trace: Voltage at Lx pin, 2.0 V/Division
Lower Trace: Inductor Current, 500 mA/Division
(V
IN
= 1.5 V, V
OUT
= 3.3 V, I
LOAD
= 50 mA; L = 5.6 H, C
OUT
= 22 F)
Figure 25. Discontinuous Conduction Mode
Switching Waveform
Upper Trace: Output Voltage Ripple, 100 mV/Division
Middle Trace: Voltage at LX pin, 2.0 V/Division
Lower Trace: Inductor Current, 500 mA/Division
(V
IN
= 1.5 V, V
OUT
= 3.3 V, I
LOAD
= 200 mA; L = 5.6 H, C
OUT
= 22 F)
Figure 26. Continuous Conduction Mode
Switching Waveform
1.5
L = 5.6 H, C
IN
= 10 F,
C
OUT
= 22 F, T
A
= 25
°
C
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