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MAX17094

更新时间： 2024-11-06 02:52:43
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Digitally Programmable Op-Amp Output Voltage

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MAX17094 数据手册

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19-4451; Rev 0; 2/09  
MAX17094 Evaluation Kit  
Evluates:MAX17094  
General Description  
Features  
The MAX17094 evaluation kit (EV kit) is a fully assem-  
bled and tested surface-mount PCB that provides the  
voltages and features required for active-matrix, thin-  
film transistor (TFT), liquid-crystal displays (LCDs). The  
EV kit contains a high-performance step-up switching  
regulator, a 250mA low-dropout (LDO) linear regulator,  
a high-speed op amp, a digitally adjustable VCOM cali-  
brator, and seven high-voltage level-shifting buffers for  
scan-driver applications.  
o +1.8V to +5.5V Input Range  
o Adjustable 450kHz to 1.2MHz Step-Up Switching  
Frequency  
o Output Voltages  
+8V Output at 300mA (Step-Up Switching  
Regulator)  
+21.5V Output at 30mA (Positive Charge Pump)  
-6.5V Output at 30mA (Negative Charge Pump)  
+2.5V at 250mA (Linear Regulator)  
150mA High-Current Op-Amp Output  
The EV kit operates from a DC supply voltage from  
+1.8V to +5.5V. The step-up switching regulator is con-  
figured for a +8V output providing at least 300mA from  
a +2.5V input. The positive charge pump is configured  
for a +21.5V output providing up to 30mA. The negative  
charge pump is configured for a -6.5V output providing  
up to 30mA. The op amp is capable of providing up to  
150mA peak and features a programmable output  
voltage initially configured for +3.2V. The low-voltage,  
low-dropout linear regulator can provide at least  
250mA. The high-voltage, level-shifting scan driver  
buffers seven logic inputs and shifts them to a desired  
level to drive TFT LCD row logic.  
o Resistor-Adjustable Switching Regulator and Op-  
Amp Output Range  
o Digitally Programmable Op-Amp Output Voltage  
o +30V to -10V High-Voltage Level-Shifting Drivers  
o > 85% Efficiency (Step-Up Switching Regulator)  
2
o On-Board I C/SMBus Interface Control through  
USB  
o Windows 2000/XP- and Windows Vista (32-Bit)-  
Compatible Software  
o 2mm Low-Profile Surface-Mount Components  
o Lead(Pb)-Free and RoHS Compliant  
o Fully Assembled and Tested  
The MAX17094 EV kit demonstrates low quiescent cur-  
rent and high efficiency (> 85%) for maximum battery  
life. Operation at 1.2MHz allows the use of tiny surface-  
mount components. The MAX17094 thin QFN package  
(0.8mm max height), with low-profile external compo-  
nents, allows this circuit to be less than 2mm high.  
Ordering Information  
2
The MAX17094 EV kit provides an on-board I C/  
PART  
TYPE  
SMBus™ interface and connects to the computer through  
the universal serial bus (USB) port. The EV kit includes  
MAX17094EVKIT+  
EV Kit  
®
®
®
Windows 2000/XP and Windows Vista -compatible  
software that provides a graphical user interface (GUI) for  
control of the MAX17094’s programmable features.  
+Denotes lead(Pb)-free and RoHS compliant.  
Component List  
DESIGNATION  
QTY  
DESCRIPTION  
DESIGNATION  
QTY  
DESCRIPTION  
4.7µF 10%, 6.3V X5R ceramic  
capacitor (0603)  
Murata GRM188R60J475K  
TDK C1608X5R0J475K  
0.1µF 10%, 50V X7R ceramic  
capacitors (0603)  
Murata GRM188R71H104K  
TDK C1608X7R1H104K  
C6–C9, C14,  
C16–C19, C34  
C1  
1
10  
1µF 20%, 6.3V X5R ceramic  
capacitors (0402)  
Murata GRM155R60J105K  
TDK C1005X5R0J105M  
Not installed, ceramic capacitor  
(0805)  
C10  
0
2
C2, C3  
C5  
2
1
4.7µF 10%, 16V X5R ceramic  
capacitors (0805)  
Murata GRM21BR61C475K  
Taiyo Yuden EMK212BJ475KG  
C11, C12  
10µF 20%, 6.3V X5R ceramic  
capacitor (0603)  
Murata GRM188R60J106M  
TDK C1608X5R0J106K  
SMBus is a trademark of Intel Corp.  
Windows, Windows XP, and Windows Vista are registered  
trademarks of Microsoft Corp.  
________________________________________________________________ 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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