Datasheet > ADD5205

ADD5205

更新时间： 2024-01-04 20:06:57

品牌	Logo	应用领域
亚德诺 - ADI		驱动器
页数	文件大小	规格书
16页	424K
描述
Four-String White LED Driver

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技术参数
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ADD5205 技术参数

Source Url Status Check Date：	2013-05-01 14:56:35.019	是否无铅：	含铅
是否Rohs认证：	符合	生命周期：	Active
包装说明：	HVQCCN, LCC12,.12SQ,20	针数：	12
Reach Compliance Code：	compliant	风险等级：	5.69
接口集成电路类型：	LED DISPLAY DRIVER	JESD-30 代码：	S-XQCC-N12
JESD-609代码：	e3	长度：	3 mm
湿度敏感等级：	3	复用显示功能：	NO
功能数量：	1	区段数：	8
端子数量：	12	最高工作温度：	85 °C
最低工作温度：	-25 °C	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装等效代码：	LCC12,.12SQ,20
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	260	电源：	3.7 V
认证状态：	Not Qualified	座面最大高度：	0.8 mm
子类别：	Display Drivers	最大供电电压：	18 V
最小供电电压：	2.8 V	标称供电电压：	3.7 V
表面贴装：	YES	技术：	DMOS
温度等级：	OTHER	端子面层：	Matte Tin (Sn)
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	30
宽度：	3 mm	Base Number Matches：	1

ADD5205 数据手册

Four-String White LED Driver

Data Sheet

ADD5205

FEATURES

FUNCTIONAL BLOCK DIAGRAM

STEP-UP SWITCHING REGULATOR

4-CHANNEL CURRENT SOURCES

White LED driver based on inductive boost converter

Input voltage range: 2.8 V to 18 V

Internal compensation

1 MHz fixed operating frequency

28 V fixed overvoltage protection

Built-in soft start for boost converter

Drives up to 4 LED current sources

LED current adjustable up to 25 mA for each channel

DC current level brightness control with PWM input

LED open fault protection

BRIGHTNESS CONTROL LOGIC

UNDERVOLTAGE LOCKOUT

SOFT START

THERMAL PROTECTION

OVERVOLTAGE PROTECTION

AUTODISABLE FOR LED OPEN

Figure 1.

General

Thermal shutdown

Undervoltage lockout

12-lead, 3 mm × 3 mm × 0.75 mm LFCSP package

APPLICATIONS

Smart PCs, PMPs, tablet PCs, UMPCs, and notebooks

GENERAL DESCRIPTION

The ADD5205 is a white LED driver for backlight applications

based on high efficiency, current mode, step-up converter

technology. It is designed with a 0.3 Ω internal switch and 1 MHz

fixed operating frequency. The ADD5205 contains four regulated

constant current sources for uniform brightness intensity. Each

current source is capable of driving up to 25 mA.

The ADD5205 has multiple safety protection features to prevent

any damage during fault conditions. If one or more LEDs are open,

the device disables the faulty current regulator automatically.

The internal soft start prevents inrush current during startup. A

thermal shutdown protection feature prevents thermal damage.

The ADD5205 is available in a low profile, thermally enhanced

3 mm × 3 mm × 0.75 mm, 12-lead lead frame chip scale package

(LFCSP) and is specified over the temperature range of −25°C

to +85°C.

The ADD5205 has four parallel strings of multiple series connected

LEDs with 2ꢀ current matching. The device provides adjustable

current sources that drive up to 25 mA using an external resistor.

The LED current can be controlled by a PWM signal input on

the PWM pin. An internal circuit translates the PWM signal to

an analog signal with an external capacitor and linearly controls

the LED current.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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中文翻译

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与ADD5205相关器件

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ADD5207ACPZ-RL	ADI	获取价格	Four-String, White LED Driver
ADD5211	ADI	获取价格	Four-String, White LED Driver for LCD Backlight Applications
ADD5211ACPZ-R7	ADI	获取价格	Four-String, White LED Driver for LCD Backlight Applications
ADD5211ACPZ-RL	ADI	获取价格	Four-String, White LED Driver for LCD Backlight Applications
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ADD-55A	MEANWELL	获取价格	55W Dual Output with Battery Charger(USP Function)

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