參數(shù)資料
型號(hào)： MX841
廠商： IXYS Corporation
英文描述： White LED Step-Up Converter
中文描述： 白光LED升壓轉(zhuǎn)換器
文件頁(yè)數(shù)： 1/6頁(yè)
文件大?。?/td> 202K
代理商： MX841
Preliminary
IXYS
MX841
Drawing No. 17023
03/10/05
www.ixys.net
MX841
White LED Step-Up Converter
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
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
17000-00TU SOIC-8
Standard Tube
17000-00TR SOIC-8
Standard T&R
17043-00TU SOIC-8
Exposed Pad Tube
100
17043-00TR SOIC-8
Exposed Pad T&R
2500
Functional Block Diagram
Qty
100
2500
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 R
DSON
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).
Typical Application
MX841
CTRL
Vbattery
V
S
OVD
Isense
CTL/
SLEEP
Rsense
Vboost
Analog
GND
2
Switch
GND
3
S
1
4
5
6
8
7
osc
err amp/
comparato
r
sleep de
t
bias gen
VDD
drive
r
Isense
OVD
band gap
+
compar
e
Gnd
SW
SW
CTL/SLEEP
Analog
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MX844 制造商:IXYS 制造商全稱:IXYS Corporation 功能描述:12 BIT, MULTI-CHANNEL POWER & TEMP SENSOR FOR MONITOR & CONTROL SYSTEMS
MX844R 功能描述:板上安裝溫度傳感器 12-Bit Power & Temp Sensor QFN-28 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
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