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MAX17117

更新时间： 2024-11-27 11:56:47
品牌 Logo 应用领域
美信 - MAXIM 驱动器调节器开关运算放大器
页数 文件大小 规格书
22页 1833K
描述
Internal-Switch Boost Regulator with Integrated 7-Channel Scan Driver, Op Amp, and LDO

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MAX17117 数据手册

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19-5241; Rev 0; 4/10  
Internal-Switch Boost Regulator with Integrated  
7-Channel Scan Driver, Op Amp, and LDO  
S High-Performance Operational Amplifier  
General Description  
The MAX17117 includes a high-performance step-up  
regulator, a 350mA low-dropout (LDO) linear regulator,  
a high-speed operational amplifier, and a high-voltage  
level-shifting scan driver with gate-shading control. The  
device is optimized for thin-film transistor (TFT) liquid-  
crystal display (LCD) applications.  
200mA Output Short-Circuit Current  
40V/µs Slew Rate  
16MHz, -3dB Bandwidth  
Low-Dropout Linear Regulator  
High-Accuracy Output Voltage (1.0%)  
S High-Voltage Drivers with Scan Logic  
+35V to -15V Outputs  
40V Maximum Voltage Swing  
Gate-Shading Control  
The step-up DC-DC converter provides the regulated  
supply voltage for panel source-driver ICs. The high  
1.2MHz switching frequency allows the use of ultra-small  
inductors and ceramic capacitors. The current-mode  
control architecture provides a fast-transient response to  
pulsed loads typical of source driver loads. The step-up  
regulator features an adjustable soft-start and an adjust-  
able cycle-by-cycle current limit.  
S Thermal-Overload Protection  
S 32-Pin, 5mm x 5mm, Thin QFN Package  
Simplified Operating Circuit  
V
V
VGL  
GHON  
The high-current operational amplifier is designed to  
drive the LCD backplane (VCOM). The amplifier features  
high output current (Q200mA typ), fast slew rate (40V/Fs  
typ), wide bandwidth (16MHz typ), and rail-to-rail inputs  
and outputs.  
V
IN  
V
MAIN  
IN  
LX  
PGND  
The low-voltage LDO linear regulator has an integrated  
0.8Ipass element and can provide at least 350mA. The  
output voltage is accurate within Q1%.  
SETUP  
CONTROLLER  
ENA  
FB  
COMP  
SS  
LDOADJ  
AGND  
(EP)  
LINEAR  
REGULATOR  
The high-voltage, level-shifting scan driver with gate-  
shading control is designed to drive the TFT panel gate  
drivers. Its seven outputs swing 40V (maximum) between  
+35V (maximum) and -15V (minimum) and can swiftly  
drive capacitive loads.  
LDOO  
MAX17117  
V
LOGIC  
OPAS  
OUT  
GATE-  
SHADING  
TIMING  
TO VCOM  
BACKPLANE  
OP  
DTS  
CONTROL  
POS  
GHON  
V
GHON  
The MAX17117 is available in a 32-pin, 5mm x 5mm, thin  
QFN package with a maximum thickness of 0.8mm for  
thin LCD panels.  
ST  
CK1  
CK3  
CK5  
STH  
CKH1  
CKH3  
CKH5  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX17117ETJ+  
-40NC to +85NC  
32 TQFN-EP*  
S1  
SYSTEM  
S3  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
S5  
SCAN DRIVER AND  
GATE-SHADING  
CONTROL LOGIC  
RO  
PANEL  
Applications  
Notebook Computer Displays  
CK2  
CK4  
CK6  
CKH2  
CKH4  
CKH6  
Features  
S 2.3V to 5.5V IN Supply-Voltage Range  
S2  
S4  
S 1.2MHz Current-Mode Step-Up Regulator  
Fast-Transient Response  
S6  
RE  
High-Accuracy Reference (1%)  
Integrated 16V, 2A, 200mI MOSFET  
High Efficiency (> 85%)  
VGLC  
VGL  
V
VGL  
Adjustable Cycle-by-Cycle Current Limit  
_______________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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