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参数资料
| 型号： | MAX1621EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC TEMP SENSOR W/ALARM 16QSOP |
| 标准包装： | 2,500 |
| 应用： | LCD 显示器 |
| 电流 - 电源： | 150µA |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
KIT MA
A SHEE
EVALU
OLLOW
19-1214; Rev 1; 1/98
NUAL
ATION T
S DAT
F
Digitally Adjustable LCD Bias Supplies
General Description
The MAX1620/MAX1621 convert a 1.8V to 20V battery
voltage to a positive or negative LCD backplane bias
voltage. Backplane bias voltage can be automatically
disabled when the display logic voltage is removed,
protecting the display. These devices use very little PC
board area, come in ultra-small QSOP packages, and
require only small, low-profile external components.
Output voltage can be set to a desired positive or nega-
tive voltage range with external resistors, and adjusted
over that range with the on-board digital-to-analog con-
verter (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?) 2-wire
serial interface.
Features
o 1.8V to 20V Battery Input Voltage
o Automatic Disable when Display Logic
is Shut Down
o Extremely Small QSOP Package
o 32-Level Internal DAC
o SMBus Serial Interface (MAX1621)
o Positive or Negative Output Voltage
Ordering Information
These devices use a low-cost, external, N-channel MOSFET
power switch or NPN transistor, and can be configured
for positive or negative output voltages. Operating cur-
PART
MAX1620 EEE
MAX1621 EEE
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 QSOP
16 QSOP
rent is a low 150μA, typically provided from a display’s
logic supply of 3.0V to 5.5V. The MAX1620/MAX1621 are
available in a 16-pin QSOP package.
Applications
Notebook Computers
Palmtop Computers
Personal Digital Assistants
Portable Data-Collection Terminals
2V TO
12V
Typical Operating Circuit
Pin Configuration
BATT
12.5V
TO
TOP VIEW
3V TO
5.5V
V DD
LX
23.5V OUT
DN (SDA) 1
16 DHI
POL
DHI
UP (SCL) 2
15 DLO
ON / OFF
SHDN
DLO
BATT 3
SHDN (SUS) 4
MAX1620
14 LX
13 PGND
DOWN
UP
DN
UP
PGND
POK 5
MAX1621
12 AGND
MAX1620
REF 6
POL 7
11 V DD
10 DOUT
REF
AGND
DOUT
FB
LCDON 8
9
FB
POK
LCDON
( ) ARE FOR MAX1621 ONLY.
QSOP
SMBus is a trademark of Intel Corp.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1621EPE+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX1621ESE+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX1623EAP | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1623EA-P | 制造商:Maxim Integrated Products 功能描述: |
| MAX1623EAP+ | 功能描述:直流/直流开关调节器 3A Step-Down w/Synch Rectification RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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