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參數資料
| 型號： | MAX1543ETP |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | TFT LCD DC-to-DC Converter with Operational Amplifiers |
| 中文描述： | 1.8 A SWITCHING REGULATOR, 1400 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封裝： | 5 X 5 MM, 0.8 MM HEIGHT, EXPOSED PAD, TQFN-20 |
| 文件頁數： | 1/20頁 |
| 文件大?。?/td> | 506K |
| 代理商： | MAX1543ETP |
General Description
The MAX1542/MAX1543 include a high-performance
boost regulator and two high-current operational ampli-
fiers for active matrix, thin-film transistor (TFT), liquid-
crystal displays (LCDs). Also included is a logic-
controlled, high-voltage switch with adjustable delay.
The MAX1543 includes an additional high-voltage load
switch and features pin-selectable boost regulator
switching frequency.
The step-up DC-to-DC converter is a high-frequency
640kHz (MAX1543)/1.2MHz (MAX1542/MAX1543) cur-
rent-mode regulator with a built-in power MOSFET that
allows the use of ultra-small inductors and ceramic
capacitors. It provides fast transient response to pulsed
loads while producing efficiencies over 85%.
The two easy-to-use, high-performance operational
amplifiers can drive the LCD backplane (V
COM
) and/or
the gamma correction divider string. The devices fea-
ture high short-circuit current (150mA), fast slew rate
(7.5V/μs), wide bandwidth (12MHz), and Rail-to-Rail
inputs and outputs.
The MAX1542/MAX1543 are available in 20-pin thin
QFN packages with a maximum thickness of 0.8mm for
ultra-thin LCD panel design.
Applications
Notebook Computer Displays
LCD Monitor Panels
PDAs
Car Navigation Displays
Features
o
Ultra-High-Performance Step-Up Regulator
Fast Transient Response to Pulsed Load Using
Current-Mode Control Architecture
High-Accuracy Output Voltage (1.3%)
Built-In 14V, 1.2A, 0.2
N-Channel Power
MOSFET with Lossless Current-Sensing
High Efficiency (85%)
8-Step Current-Controlled Digital Soft-Start
o
Two High-Performance Operational Amplifiers
150mA Output Short-Circuit Current
7.5V/μs Slew Rate
12MHz -3dB Bandwidth
Rail-to-Rail Inputs/Outputs
Unity Gain Stable
o
Logic-Controlled High-Voltage Switch with
Adjustable Delay
o
Timer Delay Latch FB Fault Protection
o
Thermal Protection
o
2.6V to 5.5V Input Operating Voltage Range
o
3.6mA (Switching), 0.45mA (Not Switching)
Quiescent Current
o
Ultra-Thin 20-Pin Thin QFN Package
(5mm x 5mm x 0.8mm)
M
TFT LCD DC-to-DC Converter with
Operational Amplifiers
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
2
1
1
1
1
D
C
D
C
F
6
7
8
9
1
P
N
O
O
N
11
12
13
14
15
POS2
SUP
LX
IN
FREQ
5
4
3
2
1
AGND
PGND
I.C.
COM
SRC
MAX1543
THIN QFN (5mm x 5mm)
TOP VIEW
Pin Configurations
Ordering Information
19-2741; Rev 0; 4/03
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
20 Thin QFN (5mm x 5mm)
20 Thin QFN (5mm x 5mm)
MAX1542
ETP
MAX1543
ETP
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Pin Configurations continued at end of data sheet.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1543ETP+ | 功能描述:LCD 驅動器 TFT LCD DC/DC Conv w/Op Amps RoHS:否 制造商:Maxim Integrated 數位數量:4.5 片段數量:30 最大時鐘頻率: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 |
| MAX1543ETP+T | 功能描述:LCD 驅動器 TFT LCD DC/DC Conv w/Op Amps RoHS:否 制造商:Maxim Integrated 數位數量:4.5 片段數量:30 最大時鐘頻率: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 |
| MAX1543ETP-T | 功能描述:LCD 驅動器 RoHS:否 制造商:Maxim Integrated 數位數量:4.5 片段數量:30 最大時鐘頻率: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 |
| MAX1543EVKIT | 功能描述:顯示開發(fā)工具 MAX1542/3 Eval Kit RoHS:否 制造商:4D Systems 產品:4Display Shields 工具用于評估:?OLED-160-G1, ?OLED-160-G2 接口類型:Serial 工作電源電壓:5 V |
| MAX1544ETL | 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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