收藏本站
S P 6 6 9 9
2 7 V S t e p U p W h i t e L E D D r i v e r
October 2011
GENERAL DESCRIPTION
The SP6699 is an inductor-based DC/DC
converter designed to drive up to five white
LEDs in series for LCD modules and keypad
backlighting functions.
Only one feedback resistor is needed to
control the LED current and obtain the desired
brightness. A 1.0MHz constant frequency PWM
control scheme is used, enabling the usage of
small external components. A typical
application needs a 1mm tall inductor and a
0.22 μ F output capacitor. Additionally, the
boost circuit Schottky diode is integrated,
further reducing the overall foot print.
A logic controlled enable pin allows this device
to be placed in a low current consumption
mode of a few microamps. Furthermore, the
SP6699 is equipped with an over voltage
output protection circuit which clamps the
output voltage to 27 volts when any LED fails
or in other abnormal conditions.
The SP6699 is offered in a smal lead free,
RoHS compliant 6-pin SOT23 package.
Rev. 2.1.0
APPLICATIONS
? LCD Modules
? Keypad Backlighting
? Digital Cameras
? GPS Receivers
? Portable Media Players
FEATURES
? High Output Voltage: Up to 27V
? Drives 2 to 5 LEDs @ 20mA
? High Efficiency up to 84%
? Integrated Schottky Diode
? Fast 1.0MHz Switching Frequency
? 200mV Feedback Voltage
? PWM Dimming Capability up to 1KHz
? Over Output Voltage Protection
? Internal Soft Start Circuit
? Small SOT23-6 Package Sub feature
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP6699 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
SP6887EB EVAL BOARD FOR SP6887
SP7121EB EVAL BOARD FOR SP7121
SP7122BEB EVAL BOARD FOR SP7122B
SP7600EB EVAL BOARD FOR SP7600
SP7601EB EVAL BOARD FOR SP7601
SP7616EB EVAL BOARD FOR SP7616
SP7648EB EVAL BOARD FOR SP7648
SP7685EB EVAL BOARD FOR SP7665
相关代理商/技术参数
SP6699EK-L 制造商:Exar Corporation 功能描述:IC CONVERTER STEP UP WHITE LED
SP6699EK-L/TR 功能描述:DC/DC 开关控制器 SET UP WHITE LED CONVERTER RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
SP-66A 制造商:SUPERWORLD 制造商全称:Superworld Electronics 功能描述:Power Transformers - Bracket UL Type
SP-66-B 制造商:Triad Magnetics 功能描述:SP-66 Series 300 Hz to 100 kHz Triad High Reliability Audio Transformer
SP-66E 制造商:SUPERWORLD 制造商全称:Superworld Electronics 功能描述:Power Transformers - Bracket TUV Type
SP67 功能描述:变压器音频和信号 600/600 CT XFMR PRI/SEC RED SPEC RoHS:否 制造商:Skyworks Solutions, Inc. 频率范围:810 MHz to 960 MHz 初级线圈阻抗: 次级线圈阻抗: 绝缘电压:23 dB 工作温度范围:- 40 C to + 85 C 端接类型:SMD/SMT 尺寸:6 mm L x 4.9 mm W x 1.6 mm H 产品:Splitters and Combiners
SP-67 功能描述:TRANSER 600 CT/ 600 CT AUDIO RoHS:是 类别:变压器 >> 音频 系列:- 标准包装:1 系列:TTC 变压器类型:数据/音频耦合 电流:- 阻抗:600 主，490CT 副 插入损耗:1.5dB 安装类型:表面贴装 尺寸/尺寸:13.50mm L x 14.00mm W 高度 - 座高（最大）:10.40mm 端接类型:鸥翼型 其它名称:MT7210CT
SP-67 制造商:Triad Magnetics 功能描述:AUDIO TRANSFORMER