NCP5050

更新时间： 2024-01-10 04:05:09

品牌	Logo	应用领域
安森美 - ONSEMI		驱动器
页数	文件大小	规格书
14页	162K
描述
4.5 W Flash White LED Boost Driver

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中文翻译

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技术参数
数据手册

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NCP5050 技术参数

生命周期：	Active	零件包装代码：	DFN
包装说明：	3 X 3 MM, 0.80 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, WDFN-10	针数：	10
Reach Compliance Code：	unknown	风险等级：	5.69
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	5.5 V
最小输入电压：	2.7 V	标称输入电压：	3.6 V
JESD-30 代码：	S-PDSO-N10	长度：	3 mm
功能数量：	1	端子数量：	10
最高工作温度：	85 °C	最低工作温度：	-10 °C
最大输出电流：	3 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	HVSON	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	认证状态：	COMMERCIAL
座面最大高度：	0.8 mm	表面贴装：	YES
切换器配置：	BOOST	最大切换频率：	1950 kHz
温度等级：	OTHER	端子形式：	NO LEAD
端子节距：	0.5 mm	端子位置：	DUAL
宽度：	3 mm	Base Number Matches：	1

NCP5050 数据手册

NCP5050

4.5 W Flash White LED

Boost Driver

The NCP5050 is a high powered fixed frequency PWM boost

converter optimized for constant current applications such as driving

high-powered white LEDs. This device has been designed with

high-efficiency for use in portable applications and is capable of

driving up to 5 high power LEDs in series for camera flash or

flashlight (torch) applications. To support the need of driving the

LEDs in a high current pulse mode for flash as well as a continuous

mode for focus or torch, a control pin and support circuitry is

incorporated which allows the user to program two LED currents. The

both output current are fully configurable via the use of 2 external

resistors and this average current can be reduced by applying a PWM

signal to the CTRL pin up to 50 kHz.

The PWM operates at 1.7 MHz which allows the use of small

inductors and ceramic capacitors. In addition the compensation is

internal to the device which simplifies the design and reduces the PCB

component count. To protect the device cycle-by-cycle current

limiting and a thermal shutdown circuit have been incorporated as

well as output over-voltage and time out protection. The maximum

peak current level of the power switch is adjustable to allow further

system optimization. The NCP5050 is housed in a low profile space

efficient 3x3 mm thermally enhanced WDFN.

http://onsemi.com

MARKING

DIAGRAM

5050

ALYWG

WDFN10, 3x3, 0.5P

CASE 522AA-01

ISSUE A

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb-Free Package

(Note: Microdot may be in either location)

Features

PIN CONNECTIONS

•ꢀHigh Efficiency Up to 88% for 2 LED (V = 3.5 V by LED) at 200 mA

•ꢀHigh frequency Dimming PWM Control

PGND

10 SW

•ꢀMaximum V of 20 V

out

PVIN

LCS

•ꢀ1.7 MHz PWM DC/DC Converter

•ꢀShut Down Control Facility with True-Cutoff

•ꢀOpen LED (Output Overvoltage) Protection

•ꢀ1.2 s Timer out Function

CTRL

PCA

HCS

•ꢀSoft Start to Limit Inrush Current

•ꢀSmall 3x3x0.8 mm WDFN Package

(Top View)

•ꢀThese are Pb-Free Devices

Typical Applications

•ꢀWhite LED Flash (Camera Phone, Digital Still Camera,

Personal Media Player)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 13 of this data sheet.

•ꢀPortable Flash Lights

•ꢀMedium Size LCD Backlight (See Application Note AND8294/D for

Details)

2.7 to 5.5 V

2.2 mH

1 mF

4.7 mF

PVIN

PCA

L1: TDK VLF5012T-2R2

D1: ON MBR130LSF

C1: 4.7 mF 6.3 V 0603

2.8 k

CTRL

HCM

TDK C1608X5R0J475M

C2: 1 mF 25V 0805

NCP5050

2.0

ENABLE

TDK C2012X5R1E105M

FLASH/

TORCH

10.0

LCS

HCS

Figure 1. Typical Application Circuit

October, 2007 - Rev. 0

Publication Order Number:

NCP5050/D

12 3 4 5 6 7...14

中文翻译

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与NCP5050相关器件

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NCP5050MTTXG	ONSEMI	获取价格	4.5 W Flash White LED Boost Driver
NCP5050MTTXG	ROCHESTER	获取价格	3A SWITCHING REGULATOR, 1950kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, 0.80 MM HEIGHT, 0.50
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NCP5080	ONSEMI	获取价格	Xenon Photoflash Capacitor Charge with Photo Sense Interface
NCP5080MUTXG	ONSEMI	获取价格	Xenon Photoflash Capacitor Charge with Photo Sense Interface
NCP508MN15TBG	ONSEMI	获取价格	Very Low Noise, Fast Turn On, 50 mA Low Dropout Voltage Regulator
NCP508MN18TBG	ONSEMI	获取价格	Very Low Noise, Fast Turn On, 50 mA Low Dropout Voltage Regulator
NCP508MN25TBG	ONSEMI	获取价格	Very Low Noise, Fast Turn On, 50 mA Low Dropout Voltage Regulator
NCP508MN28TBG	ONSEMI	获取价格	Very Low Noise, Fast Turn On, 50 mA Low Dropout Voltage Regulator

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