參數(shù)資料
型號(hào)： MAX1621
廠商： Maxim Integrated Products, Inc.
英文描述： Digitally Adjustable LCD Bias Supplies(數(shù)字可調(diào)LCD Bias電源)
中文描述： 數(shù)字調(diào)節(jié)LCD偏置電源
文件頁(yè)數(shù)： 1/2頁(yè)
文件大?。?/td> 26K
代理商： MAX1621
_______________General Desc ription
The MAX1620/MAX1621/MAX1622 convert a 4V to 24V
battery voltage to a positive or negative LCD backplane
bias voltage. Backplane bias voltage is automatically
disabled when the display logic voltage is removed,
protecting the display. These devices use very little PC
board area: They come in ultra-small QSOP and μMAX
packages, and require only small, low-profile external
components.
The output voltage can be preset to the desired posi-
tive or negative voltage range with simple applications
resistors, and adjusted over that range with the on-
board DAC or with a potentiometer. The MAX1620/
MAX1621 include a 5-bit DAC, allowing digital software
control of the bias voltage. The MAX1620 uses up/down
digital signaling to adjust the DAC, and the MAX1621
uses the System Management Bus (SMBus) two-wire
serial interface. The MAX1622 is suitable for applica-
tions where digital control is not required.
These devices use low-cost, external N-channel or NPN
power switches, and can be configured for positive or
negative output voltages. Operating power is a low
500μA, provided from the display logic supply of 3.0V
to 5.5V. The MAX1620/MAX1621 are available in a 16-
pin QSOP package, and the MAX1622 is available in
the 8-pin μMAX package.
________________________Applic ations
Notebook Computers
Palmtop Computers
Laptop Computers
Personal Digital Assistants
Portable Data-Collection Terminals
____________________________Features
o
4V to 24V Battery Input Voltage
o
Automatic Disable when Display Logic is
Shut Down
o
Extremely Small QSOP/μMAX Package
o
32-Level Internal DAC
o
SMBus Serial Interface
o
Positive or Negative Output Voltage
M
Digitally Adjustable LCD Bias S upply
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
PART
MAX1620
CEE
MAX1620EEE
MAX1621
CEE
MAX1621EEE
MAX1622
CUA
MAX1622EUA
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
16 QSOP
16 QSOP
16 QSOP
16 QSOP
8 μMAX
8 μMAX
ADVANCE INFORMATION
All information in this data sheet is preliminary
and subject to change.
7/95
______________Ordering Information
0°C to +70°C
-40°C to +85°C
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
DH
DL
LX
GND
SHDN
BATT
DN
UP
TOP VIEW
MAX1620
AGND
V
DD
DAC
FB
LCDON
EAPOL
FREQ
POK
QSOP
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
DH
DL
LX
GND
SUS
BATT
SCL
SDA
MAX1621
AGND
V
DD
DAC
FB
LCDON
EAPOL
FREQ
POK
QSOP
GND
EAPOL
V
DD
FB
1
2
8
7
DGATE
LX
SHDN
BATT
MAX1622
μ
MAX
3
4
6
5
__________________________________________________________Pin Configurations
SMBus is a trademark of Intel Corp.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1621EEE 功能描述:顯示驅(qū)動(dòng)器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel
MAX1621EEE+ 功能描述:其他電源管理 Digitally Adjustable LCD Bias Supply RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
MAX1621EEE+T 功能描述:LCD 驅(qū)動(dòng)器 Digitally Adjustable LCD Bias Supply RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
MAX1621EEE-T 功能描述:顯示驅(qū)動(dòng)器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel
MAX1621EPE+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
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