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參數資料
| 型號： | NCP1421DMR2 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 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： | MICRO PACK-8 |
| 文件頁數： | 1/14頁 |
| 文件大?。?/td> | 116K |
| 代理商： | NCP1421DMR2 |
Semiconductor Components Industries, LLC, 2004
October, 2004 Rev. 6
1
Publication Order Number:
NCP1421/D
NCP1421
600 mA SyncRect PFM
StepUp DCDC Converter
with TrueCutoff and
RingKiller
NCP1421 is a monolithic micropower highfrequency stepup
switching converter IC specially designed for batteryoperated
handheld electronic products up to 600 mA loading. It integrates
SyncRect to improve efficiency and to eliminate the external
Schottky Diode. High switching frequency (up to 1.2 MHz) allows
for a low profile, smallsized inductor and output capacitor to be
used. When the device is disabled, the internal conduction path from
LX or BAT to OUT is fully blocked and the OUT pin is isolated from
the battery. This TrueCutoff function reduces the shutdown current
to typically only 50 nA. RingKiller is also integrated to eliminate
the highfrequency ringing in discontinuous conduction mode. In
addition to the above, LowBattery Detector, LogicControlled
Shutdown, CyclebyCycle Current Limit and Thermal Shutdown
provide valueadded features for various batteryoperated
applications. With all these functions on, the quiescent supply
current is typically only 8.5 A. This device is available in the
compact and low profile Micro8 package.
Features
PbFree Package is Available
High Efficiency: 94% for 3.3 V Output at 200 mA from 2.5 V Input
88% for 3.3 V Output at 500 mA from 2.5 V Input
High Switching Frequency, up to 1.2 MHz (not hitting current limit)
Output Current up to 600 mA at V
IN
= 2.5 V and V
OUT
= 3.3 V
TrueCutoff Function Reduces Device Shutdown Current to
typically 50 nA
AntiRinging RingKiller for Discontinuous Conduction Mode
High Accuracy Reference Output, 1.20 V
2.5 mA Loading Current when V
OUT
> 3.3 V
Low Quiescent Current of 8.5 A
Integrated LowBattery Detector
Open Drain LowBattery Detector Output
1.0 V Startup at No Load Guaranteed
Output Voltage from 1.5 V to 5.0 V Adjustable
1.5 A CyclebyCycle Current Limit
Multifunction LogicControlled Shutdown Pin
On Chip Thermal Shutdown with Hysteresis
Typical Applications
Personal Digital Assistants (PDA)
Handheld Digital Audio Products
Camcorders and Digital Still Cameras
Handheld Instruments
Conversion from one to two Alkaline, NiMH, NiCd Battery Cells to
3.05.0 V or one Lithiumion cells to 5.0 V
White LED Flash for Digital Cameras
1.5%, can Supply
Device
Package
Shipping
ORDERING INFORMATION
NCP1421DMR2
Micro8
4000 Tape & Reel
http://onsemi.com
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
Micro8
DM SUFFIX
CASE 846A
1
8
PIN CONNECTIONS
FB
OUT
LX
GND
BAT
LBI/EN
LBO
REF
1
2
3
4
8
7
6
5
MARKING
DIAGRAM
1421
A
Y
W
= Device Code
= Assembly Location
= Year
= Work Week
1421
AYW
(Top View)
NCP1421DMR2G
Micro8
(PbFree)
4000 Tape & Reel
相關PDF資料 |
PDF描述 |
|---|---|
| NCP1421DMR2G | 600 mA Sync-Rect PFM Step-Up DC-DC Converter Step-Up DC-DC Converter with True-Cutoff and Ring-Killer |
| 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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| NCP1421DMR2G | 功能描述:DC/DC 開關控制器 600mA PFM Boost w/Ring Killer RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| NCP1421EVB | 功能描述:電源管理IC開發工具 ANA NCP1421 EVAL BRD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| NCP1421LEDEVB | 功能描述:LED 照明開發工具 ANA NCP1421 EVAL BRD RoHS:否 制造商:Fairchild Semiconductor 產品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝: |
| NCP1421LEDGEVB | 功能描述:EVAL BOARD FOR NCP1421 RoHS:是 類別:編程器，開發系統 >> 評估板 - LED 驅動器 系列:- 標準包裝: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:可調光 輸入電壓:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相關產品: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開發工具 ANA NCP1422 EVAL BRD RoHS:否 制造商:Maxim Integrated 產品: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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