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參數(shù)資料
| 型號： | NCP1421DMR2G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 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： | 1.5 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | LEAD FREE, MICRO PACK-8 |
| 文件頁數(shù)： | 12/14頁 |
| 文件大小： | 116K |
| 代理商： | NCP1421DMR2G |
NCP1421
http://onsemi.com
12
From the previous calculations, you need at least 18.75
F in order to achieve the specified ripple level at the
conditions stated. Practically, a capacitor that is one level
larger is used to accommodate factors not taken into
account in the calculations. Therefore, a capacitor value of
22 F is selected. The NCP1421 is internally compensated
for most applications, but in case additional compensation
is required, the capacitor C4 can be used as external
compensation adjustment to improve system dynamics.
In order to provide an easy way for customers to select
external parts for NCP1421 in different input voltage and
output current conditions, values of inductance and
capacitance are suggested in Figure 27, 28 and 29.
0
1.4
2
4
6
8
10
12
14
16
1.8
2.0
2.2
2.4
2.6
2.8
3.0
Figure 27. Suggested Inductance of V
OUT
= 3.3 V
Figure 28. Suggested Inductance of V
OUT
= 5.0 V
Figure 29. Suggested Capacitance for Output Capacitor
1.6
INPUT VOLTAGE (V)
I
I
OUT
= 500 mA
0
1.6
3
6
9
12
15
18
21
2.2
2.5
2.8
3.1
3.4
3.7
4.0
1.9
INPUT VOLTAGE (V)
I
I
OUT
= 500 mA
OUTPUT CURRENT (mA)
C
C
V
OUTRIPPLE
= 45 mV
V
OUTRIPPLE
= 50 mV
V
OUTRIPPLE
= 40 mV
25
33
50
100
40
35
30
25
20
15
10
5
0
200
250
300
350
400
450
500
550
600
Table 1. Suggestions for Passive Components
Output Current
Inductors
Capacitors
500 mA
Sumida CR43, CR54,CDRH6D28 series
Panasonic ECJ series
Kemet TL494 series
250 mA
Sumida CR32 series
Panasonic ECJ series
Kemet TL494 series
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NCP1421 | 600 mA Sync-Rect PFM Step-Up DC-DC Converter with True-Cutoff and Ring-Killer(帶真切斷（true-cutoff）和振蕩消除（ring-killer）的600mA同步整流PFM步升DC-DC 轉(zhuǎn)換器) |
| NCP1421D | 600 mA Sync-Rect PFM Step-Up DC-DC Converter Step-Up DC-DC Converter with True-Cutoff and Ring-Killer |
| NCP1422MNR2 | 800 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and Ring−Killer |
| NCP1422MNR2G | 800 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and Ring−Killer |
| NCP1423DMR2 | 400 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and Ring−Killer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCP1421EVB | 功能描述:電源管理IC開發(fā)工具 ANA NCP1421 EVAL BRD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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| NCP1421LEDGEVB | 功能描述:EVAL BOARD FOR NCP1421 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® 電流 - 輸出 / 通道:20mA 輸出及類型:1，非隔離 輸出電壓:17V 特點(diǎn):可調(diào)光 輸入電壓:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相關(guān)產(chǎn)品:LM3508TLX-ND - IC LED DRVR WHT BCKLGT 9USMDLM3508TLDKR-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLCT-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLTR-ND - IC LED DRVR WHT BCKLGT 9MICROSMD |
| NCP1422EVB | 功能描述:電源管理IC開發(fā)工具 ANA NCP1422 EVAL BRD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| NCP1422LEDEVB | 功能描述:LED 照明開發(fā)工具 ANA NCP1422LED EVAL BRD RoHS:否 制造商:Fairchild Semiconductor 產(chǎn)品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝: |
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