Datasheet > ISL97901CRZ-T

ISL97901CRZ-T

更新时间： 2024-01-07 02:21:06

品牌	Logo	应用领域
瑞萨 - RENESAS		驱动接口集成电路
页数	文件大小	规格书
2页	212K
描述
RGB Buck-Boost Four-Channel LED Driver with Color Sequencing and Automatic White Balance

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ISL97901CRZ-T 技术参数

生命周期：	Active	零件包装代码：	QFN
包装说明：	,	针数：	28
Reach Compliance Code：	compliant	风险等级：	5.65
接口集成电路类型：	LED DISPLAY DRIVER	Base Number Matches：	1

ISL97901CRZ-T 数据手册

DATA SHORT

To request the full datasheet, please visit www.intersil.com/products/isl97901

ISL97901

FN7824

Rev 0.00

June 29, 2012

RGB Buck-Boost Four-Channel LED Driver with Color Sequencing and Automatic

White Balance

The ISL97901 is a highly efficient four channel, 1.5A

Features

sequential LED driver powered from a single-cell Li-ion battery,

or regulated input voltage up to 5.5V. The ISL97901

• Buck-Boost Based LED Driver

incorporates an independent current controlled driving

mechanism for each of the LED's to allow accurate brightness

control.

• RGB, RGGB or RGBW Color Sequencing

• Up to 1.5A Output Current

• Photo Detector Feedback Interface

• Dual Green LED Drive Support

The ISL97901 also utilizes a buck-boost converter to ensure

optimum output voltage is maintained for a wide variety of

LED forward voltages. The ISL97901's highly integrated and

efficient power conversion core operates at well over 90%

efficiency across a wide range of operating conditions. The

power conversion core implements a proprietary algorithm

that allows seamless transitions and glitch-free operation

between the buck and the boost modes as the battery voltage

drops during operation.

• Closed-Loop White Balancing Dynamic Current Scaling

• Standby Current less than 70µA

• I C Interface

• 150mV Feedback Voltage Reference for Current Regulation

to Maximize Efficiency

• 2.5MHz Switching Frequency

The ISL97901 provides I/O pins to interface with Intersil's

optical sensor IC's for white balance control. White balance is

achieved by closing the opto-electrical loop which allows for

LED light output to get calibrated against preset target values.

The ISL97901 can also be configured to run in an open-loop

manner if real-time white balance control is not desired. In this

case, the LED currents are set by the internal registers.

• Programmable Output Voltage for each LED

• Dynamic Headroom Management

• Internal Current Setting Registers

• Ambient Temperature Range: 0°C to +70°C

• Pb-Free (RoHS Compliant)

Applications

• LED-Based Pico Projector In Mobile Phones

• Stand Alone Pico Projectors

• Tri-Stimulus Display Drivers

Related Literature

• ISL58333 “Wide Optical Spectrum Photo Sensor IC”

• ISL58344 “Quad Segment Photo Sensor IC”

• Other Handheld Display Drivers

2.2µH

VIN

VOUT

C₁

20-40µF

2.7V TO 4.3V

C₂

47µF

VCC

Batt

PGND

C₃

1.0µF

ENABLE

CEN

DISABLE

EN1

WHITE

EN2

2^nd

LCoS OR DLP

DRIVER ASIC

ISL97901

EN3

EN4

GREEN

FB1

FB2

R_SNS

0.1

CBYP

SGND

R_SNS

0.1

C₄

0.1µF

PGND

SDA

SCL

LFBP

LFBN

SENSOR

ADDR

PHOTO DETECTOR

ISL58333

FIGURE 1. TYPICAL APPLICATION

FN7824 Rev 0.00

June 29, 2012

Page 1 of 2

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与ISL97901CRZ-T相关器件

型号	品牌	描述	获取价格	数据表
ISL97901CRZ-T7A	RENESAS	RGB Buck-Boost Four-Channel LED Driver with Color Sequencing and Automatic White Balance	获取价格
ISL98001	INTERSIL	Triple Video Digitizer with Digital PLL	获取价格
ISL98001_06	INTERSIL	Triple Video Digitizer with Digital PLL	获取价格
ISL98001_07	INTERSIL	Triple Video Digitizer with Digital PLL	获取价格
ISL98001CQZ-140	INTERSIL	Triple Video Digitizer with Digital PLL	获取价格
ISL98001CQZ-170	INTERSIL	Triple Video Digitizer with Digital PLL	获取价格

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