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參數資料
| 型號： | MAX8758 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Step-Up Regulator with Switch Control and Operational Amplifier for TFT LCD |
| 中文描述： | 具有開關控制和運算放大器的升壓型調節器，用于TFT LCD |
| 文件頁數： | 1/20頁 |
| 文件大小： | 400K |
| 代理商： | MAX8758 |
General Description
The MAX8758 includes a high-performance step-up regu-
lator, a high-speed operational amplifier, and a logic-
controlled, high-voltage switch-control block with pro-
grammable delay. The device is optimized for thin-film
transistor (TFT) liquid-crystal display (LCD) applications.
The step-up DC-DC regulator provides the regulated sup-
ply voltage for the panel source driver ICs. The converter
is a high-frequency (640kHz/1.2MHz), current-mode regu-
lator with an integrated 14V n-channel power MOSFET.
The high-switching frequency allows the use of ultra-small
inductors and ceramic capacitors. The current-mode con-
trol architecture provides fast transient response to pulsed
loads. The regulator achieves efficiencies over 85% by
bootstrapping the supply rail of the internal gate driver
from the step-up regulator output. The step-up regulator
features undervoltage lockout (UVLO), soft-start, and
internal current limit. The high-current operational amplifier
is designed to drive the LCD backplane (VCOM). The
amplifier features high output current (±150mA), fast slew
rate (7.5V/μs), wide bandwidth (12MHz), and rail-to-rail
inputs and outputs.
The MAX8758 is available in a 24-pin, 4mm x 4mm, thin
QFN package with a maximum thickness of 0.8mm for
ultra-thin LCD panels. The device operates over the
-40°C to +85°C temperature range.
Applications
Notebook Displays
LCD Monitors
Features
1.8V to 5.5V Input Voltage Range
Input Undervoltage Lockout
0.5mA Quiescent Current
640kHz/1.2MHz Current-Mode Step-Up Regulator
Fast Transient Response
High-Accuracy Output Voltage (1.5%)
Built-In 14V, 2.5A, 115m
Ω
MOSFET
High Efficiency
Programmable Soft-Start
Current Limit with Lossless Sensing
Timer-Delay Fault Latch
High-Speed Operational Amplifier
±150mA Output Current
7.5V/μs Slew Rate
12MHz, -3dB Bandwidth
Rail-to-Rail Inputs/Outputs
Dual-Mode, Logic-Controlled, High-Voltage
Switch with Programmable Delay
Thermal-Overload Protection
24-Pin, 4mm x 4mm, Thin QFN Package
Simplified Operating Circuit
M
Step-Up Regulator with Switch Control and
Operational Amplifier for TFT LCD
________________________________________________________________
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
Ordering Information
V
MAIN
TO VCOM
BACKPLANE
V
GON
FROM TCON
V
IN
V
GOFF
IN
FREQ
SHDN
COMP
LDO
FB
LX
GND
PGND
OUT
SUPB
GON
DRN
CTL
MODE
SS
POSB
NEGB
OUTB
THR
DLP
SRC
MAX8758
19-3699; Rev 1; 9/05
PART
TEMP RANGE
PIN-PACKAGE
24 Thin QFN-EP*
4mm x 4mm
24 Thin QFN-EP*
4mm x 4mm
MAX8758ETG
-40°C to +85°C
MAX8758ETG+
-40°C to +85°C
*
EP = Exposed pad.
+
Denotes lead-free package.
Pin Configuration appears at end of data sheet.
DualMode is a trademark of Maxim Integrated Products, Inc.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX8758ETG+ | 功能描述:LCD 驅動器 Step-Up Regulator 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 |
| MAX8758ETG+T | 功能描述:LCD 驅動器 Step-Up Regulator 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 |
| MAX8758ETJ | 功能描述:LCD 驅動器 Step-Up Regulator 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 |
| MAX8758EVKIT | 功能描述:電源管理IC開發工具 MAX8758 Eval Kit RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| MAX8759AETI+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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