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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