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| 型号： | MAX1747EUP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC CHRG-PUMP TRPL TFTLCD 20TSSOP |
| 标准包装： | 2,500 |
| 应用： | 转换器，TFT，LCD |
| 输入电压： | 2.7 V ~ 4.5 V |
| 输出数： | 3 |
| 输出电压： | 可调 |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
19-1788; Rev 0; 10/00
ATION
AILABL
EVALU E
AV
KIT
Triple Charge-Pump TFT LCD
DC-DC Converter
General Description
The MAX1747 triple charge-pump DC-DC converter
provides the regulated voltages required by active
matrix thin-film transistor (TFT) liquid-crystal displays
(LCDs) in a low-profile TSSOP package. One high-
power and two low-power charge pumps convert the
+2.7V to +4.5V input supply voltage into three indepen-
dent output voltages.
The primary high-power charge pump generates an
output voltage (V OUT ) between 4.5V and 5.5V that is
regulated within ±1%. The low-power BiCMOS control
circuitry and the low on-resistance (R ON ) power
MOSFETs maximize efficiency. The adjustable switch-
ing frequency (200kHz to 2MHz) provides fast transient
response and allows the use of small low-profile ceram-
ic capacitors.
The dual low-power charge pumps independently regu-
late one positive output (V POS ) and one negative output
(V NEG ). These additional outputs use external diode
and capacitor multiplier stages (as many stages as
required) to regulate output voltages up to +35V and
-35V.
The constant switching frequency and a proprietary
Features
o Adjustable Outputs
Up to +5.5V Main High-Power Output
Up to +35V Positive Charge-Pump Output
Down to -35V Negative Charge-Pump Output
o 200kHz to 2MHz Adjustable Switching Frequency
o +2.7V to +4.5V Input Supply
o Internal Power MOSFETs
o 0.1μA Shutdown Current
o Internal Soft-Start
o Power-Ready Output
o Internal Supply Sequencing
o Fast Transient Response
o Ultra-Thin Solution (No Inductors)
o Thin TSSOP Package (1.1mm max)
Ordering Information
regulation algorithm minimize output ripple and capaci-
tor sizes for all three charge pumps. The MAX1747 is
available in the ultra-thin TSSOP package (1.1mm max
PART
MAX1747EUP
TEMP. RANGE
-40 ° C to +85 ° C
PIN-PACKAGE
20 TSSOP
height).
TFT Active-Matrix LCDs
Applications
Typical Operating Circuit
Passive-Matrix Displays
Personal Digital Assistants (PDAs)
Pin Configuration
TOP VIEW
INPUT
TO μ C
SUPM
IN
SHDN
RDY
DRVN
CXP
CXN
OUT
SUPP
SUPN
FB
MAIN OUTPUT
TGND 1
20 OUT
TGND 2
RDY 3
19 CXP
18 SUPM
MAX1747
FB 4
INTG 5
MAX1747
17 CXN
16 PGND
NEGATIVE
OUTPUT
FBN
DRVP
IN 6
15 SUPP
GND 7
14 DRVP
REF
REF 8
FBP 9
13 SUPN
12 DRVN
TGND
FBP
INTG
POSITIVE
OUTPUT
GND
PGND
FBN 10
TSSOP
11 SHDN
________________________________________________________________ Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1747EVKIT | 功能描述:电源管理IC开发工具 MAX1747 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX17480EVKIT+ | 功能描述:电源管理IC开发工具 MAX17480 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX17480GTL+ | 功能描述:显示驱动器和控制器 2-/3-Output Mobile erial VID Ctlr RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX17480GTL+T | 功能描述:显示驱动器和控制器 2-/3-Output Mobile erial VID Ctlr RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX17482GTL+ | 功能描述:电压模式 PWM 控制器 NDA IC RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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