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参数资料
| 型号： | NCP1421LEDEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR NCP1421LED |
| 设计资源： | NCP1421LEDEVB BOM NCP1421LEDEVB Schematic NCP1421LEDEVB Gerber Files |
| 标准包装： | 1 |
| 电流 - 输出 / 通道： | 600mA |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 3.5V |
| 输入电压： | 3.6V |
| 已供物品： | 板 |
| 已用 IC / 零件： | NCP1421 |
| 其它名称： | NCP1421LEDEVBOS |
NCP1421
600 mA Sync?Rect PFM
Step?Up DC?DC Converter
with True?Cutoff and
Ring?Killer
NCP1421 is a monolithic micropower high?frequency step?up
switching converter IC specially designed for battery?operated
hand?held electronic products up to 600 mA loading. It integrates
Sync?Rect to improve efficiency and to eliminate the external
Schottky Diode. High switching frequency (up to 1.2 MHz) allows
for a low profile, small?sized inductor and output capacitor to be
used. When the device is disabled, the internal conduction path from
http://onsemi.com
MARKING
DIAGRAM
LX or BAT to OUT is fully blocked and the OUT pin is isolated from
the battery. This True?Cutoff function reduces the shutdown current
to typically only 50 nA. Ring?Killer is also integrated to eliminate
the high?frequency ringing in discontinuous conduction mode. In
8
1
Micro8
DM SUFFIX
CASE 846A
1421
AYW
addition to the above, Low?Battery Detector, Logic?Controlled
Shutdown, Cycle?by?Cycle Current Limit and Thermal Shutdown
provide value ?added features for various battery?operated
applications. With all these functions on, the quiescent supply
current is typically only 8.5 m A. This device is available in the
compact and low profile Micro8 t package.
1421
A
Y
W
= Device Code
= Assembly Location
= Year
= Work Week
Features
? Pb?Free Package is Available
? High Efficiency: 94% for 3.3 V Output at 200 mA from 2.5 V Input
PIN CONNECTIONS
?
?
?
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
True?Cutoff Function Reduces Device Shutdown Current to
FB
LBI/EN
LBO
1
2
3
8
7
6
OUT
LX
GND
?
?
typically 50 nA
Anti?Ringing Ring?Killer for Discontinuous Conduction Mode
High Accuracy Reference Output, 1.20 V $ 1.5%, can Supply
REF
4
(Top View)
5
BAT
2.5 mA Loading Current when V OUT > 3.3 V
? Low Quiescent Current of 8.5 m A
? Integrated Low?Battery Detector
? Open Drain Low?Battery Detector Output
? 1.0 V Startup at No Load Guaranteed
? Output Voltage from 1.5 V to 5.0 V Adjustable
? 1.5 A Cycle?by?Cycle Current Limit
? Multi?function Logic?Controlled Shutdown Pin
? On Chip Thermal Shutdown with Hysteresis
Typical Applications
? Personal Digital Assistants (PDA)
? Handheld Digital Audio Products
? Camcorders and Digital Still Cameras
? Hand?held Instruments
? Conversion from one to two Alkaline, NiMH, NiCd Battery Cells to
ORDERING INFORMATION
Device Package Shipping ?
NCP1421DMR2 Micro8 4000 Tape & Reel
NCP1421DMR2G Micro8 4000 Tape & Reel
(Pb?Free)
?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.
?
3.0?5.0 V or one Lithium?ion cells to 5.0 V
White LED Flash for Digital Cameras
? Semiconductor Components Industries, LLC, 2004
October, 2004 ? Rev. 6
1
Publication Order Number:
NCP1421/D
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| NCP1421LEDGEVB | 功能描述:EVAL BOARD FOR NCP1421 RoHS:是 类别:编程器，开发系统 >> 评估板 - LED 驱动器 系列:- 标准包装:1 系列:PowerWise® 电流 - 输出 / 通道:20mA 输出及类型:1，非隔离 输出电压:17V 特点:可调光 输入电压:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相关产品: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:电源管理IC开发工具 ANA NCP1422 EVAL BRD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| NCP1422LEDEVB | 功能描述:LED 照明开发工具 ANA NCP1422LED EVAL BRD RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| NCP1422LEDGEVB | 功能描述:LED 照明开发工具 RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| NCP1422MNR2 | 功能描述:直流/直流开关转换器 800mA PFM Boost RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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