Datasheet > ADD5201BCPZ-RL

ADD5201BCPZ-RL

更新时间： 2024-09-28 19:48:15

品牌	Logo	应用领域
亚德诺 - ADI		驱动接口集成电路
页数	文件大小	规格书
20页	611K
描述
High Efficiency, Eight-String, White LED Driver for LCD Backlight Applications

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ADD5201BCPZ-RL 数据手册

High Efficiency, Eight-String, White LED

Driver for LCD Backlight Applications

ADD5201

Data Sheet

FEATURES

BLOCK DIAGRAM

White LED driver based on inductive boost converter

Integrated 50 V MOSFET with 2.9 A peak current limit

Input voltage range: 6 V to 21 V

STEP-UP SWITCHING REGULATOR

EIGHT CURRENT SOURCES

Maximum output adjustable up to 45 V

350 kHz to 1 MHz adjustable operating frequency

Built-in soft start for boost converter

Drives up to eight LED current sources

LED current adjustable up to 30 mA for each channel

Headroom control to maximize efficiency

Adjustable output dimming frequency: 200 Hz to 10 kHz

LED open/short fault protection

INTERFACE

8-BIT DIMMING CONTROL LOGIC

UNDERVOLTAGE LOCKOUT

SOFT START

THERMAL PROTECTION

OVERVOLTAGE PROTECTION

AUTODISABLE FOR LED OPEN/SHORT

Selectable brightness control interface modes

PWM input

Figure 1.

SMBus serial interface

Selectable dimming controls

Fixed delay PWM dimming control with 8-bit resolution

No delay PWM dimming control with 8-bit resolution

Phase shift PWM dimming control with 8-bit resolution

Direct PWM dimming control

DC current dimming mode with 8-bit resolution

General

Thermal shutdown

Undervoltage lockout

28-lead, 4 mm × 4 mm LFCSP

APPLICATIONS

Notebook PCs, UMPCs, and monitor displays

GENERAL DESCRIPTION

The ADD5201 is a white LED driver for backlight applications

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

nology. It is designed with a 0.15 Ω, 2.9 A internal switch and a

pin adjustable operating frequency between 350 kHz and 1 MHz.

The ADD5201 contains eight regulated current sources for

uniform brightness intensity. Each current source can be

driven up to 30 mA.

with two external dimming mode selection pins. The device pro-

vides a pin adjustable output dimming frequency range from

200 Hz to 10 kHz.

The ADD5201 operates over an input voltage range of 6 V to

21 V, but the device can function with a voltage as low as 5.4 V.

The ADD5201 has multiple safety protection features to prevent

damage during fault conditions. If any LED is open or short, the

device automatically disables the faulty current regulator. The

internal soft start prevents inrush current during startup. A

thermal shutdown protection prevents thermal damage.

The ADD5201 drives up to eight parallel strings of multiple

series connected LEDs with a 1.5% current regulation accuracy.

The device provides an adjustable LED driving current up to

30 mA for each channel by an external resistor. The ADD5201

provides various brightness control methods. The LED dimming

control can be achieved through SMBus and/or pulse-width

modulation (PWM) input. Each dimming mode is selectable

The ADD5201 is available in a low profile, thermally enhanced,

4 mm × 4 mm × 0.75 mm, 28-lead, RoHS compliant lead frame

chip scale package (LFCSP) and is specified over the industrial

temperature range of −25°C to +85°C.

Rev. A

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

rightsof third parties that may result fromits 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 andregisteredtrademarks are the 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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与ADD5201BCPZ-RL相关器件

型号	品牌	获取价格	描述	数据表
ADD5203	ADI	获取价格	8-String,White LED Driver with SMBus and PWM Input for LCD Backlight Applications
ADD5203ACPZ-RL	ADI	获取价格	8-String,White LED Driver with SMBus and PWM Input for LCD Backlight Applications
ADD5205	ADI	获取价格	Four-String White LED Driver
ADD5205ACPZ-RL	ADI	获取价格	Four-String White LED Driver
ADD5207	ADI	获取价格	Four-String, White LED Driver
ADD5207ACPZ	ADI	获取价格	Four-String, White LED Driver for LCD Backlight Applications
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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