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参数资料
| 型号： | MX841BE |
| 厂商： | IXYS CORP |
| 元件分类： | 稳压器 |
| 中文描述： | 2 A SWITCHED CAPACITOR REGULATOR, 1300 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | ROHS COMPLIANT, MS-012-AA, SOIC-8 |
| 文件页数： | 1/6页 |
| 文件大小： | 208K |
| 代理商： | MX841BE |
IXYS
MX841
1
10/04/07
Drawing No. 17023
www.claremicronix.com
MX841
White LED Step-Up Converter
with Linear Dimming Control
Features:
1.1V to 5.5V Input Range
2 Amp Peak Switch Current
High Efficiency > 80%
20V Maximum Output with Over-Voltage
Protection
LED Intensity Control
1.0 MHz Fixed Frequency Switching
8 Lead SOIC Package
RoHS Compliant Product
Applications:
White LED Display Backlighting
-
Low Voltage: Mobile Phones, PDA’s,
MP3 Players, Digital Cameras
-
High Drive Current:
Vehicle Instrumentation Panels
Ordering Information
Part No.
Description
Qty
MX841BE
SOIC-8 Exposed Pad Tube 100
MX841BETR SOIC-8 Exposed Pad T&R
1,000
General Description
The MX841 is a fixed frequency, constant current
source step-up DC/DC converter. The output current
is directly regulated making the MX841 ideal for
driving series connected white light emitting diodes
(LED’s) in backlight applications. The MX841
powers up to 3 series white LED’s at 1.1V, and 20
series/parallel white LED’s at 5.0V.
The MX841 features a 1.0MHz switching frequency
to accommodate the use of small capacitors and a
small inductor necessary in size sensitive portable
applications. Light intensity and shutdown are
conveniently controlled by a single analog voltage.
Power efficiency and battery life are extended
through the use of a high voltage, low RDSON N-
channel MOSFET switch.
The MX841 is designed to operate over a
temperature range of -40°C to +85°C, and is
available in an SOIC-8 Package, with or without an
Exposed Pad in Tube or on Tape and Reel.
(Alternate package types available upon request).
Functional Block Diagram
Typical Application
MX841
CTRL
Vbattery
VDD
SW
OVD
Isense
CTL/
SLEEP
Rsense
Vboost
Analog
GND
Switch
GND
SW
3
14
5
6
8
7
2
osc
err amp/
comparato
r
sleep de
t
bias gen
VDD
drive
r
Isense
OVD
band gap
+
compar
e
Gnd
Switch
SW
CTL/SLEEP
Analog
Gnd
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MX841BETR | 功能描述:LED照明驱动器 Amps V RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MX842RS | 制造商:BCM Advanced Research 功能描述:ATI RS842 CHIPS SEMPRON/TURION 1GIG DDR 10/100 2COM 8USB - Bulk |
| MX844 | 制造商:IXYS 制造商全称:IXYS Corporation 功能描述:12 BIT, MULTI-CHANNEL POWER & TEMP SENSOR FOR MONITOR & CONTROL SYSTEMS |
| MX844R | 功能描述:板上安装温度传感器 12-Bit Power & Temp Sensor QFN-28 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MX844RTR | 功能描述:板上安装温度传感器 12-Bit Power & Temp Sensor QFN-28 on T&R RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
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