19-2612; Rev 0A; 12/02
MAX1978 Evaluation Kit
General Description
Features
2
The MAX1978 evaluation kit (EV kit) is a fully assembled
and tested PC board that implements a complete
switch-mode temperature control system for a Peltier
thermo-electric cooler (TEC) module. It operates from a
single 3V to 5.5V supply and provides a bipolar ±±.±A
(max) output to the module.
o Circuit Footprint Less than 0.93in
o Circuit Height Less than 3mm
o Operates from a Single Supply (3V to 5.5V)
o
2.2ꢀ Output Current
o High-Efficiency Switch-Mode Design
o Programmable Heating/Cooling Current Limit
o TEC Current Monitor Output
A potentiometer, DAC, or external source generates a
DC temperature set-point voltage. Thermal feedback
from the TEC module is compared to the set-point
voltage to generate the TEC current control signal. The
MAX1978 controls TEC current to accurately regulate
temperature.
o Overtemperature, Undertemperature, and ꢀnalog
Temperature Monitor
o 500kHz or 1MHz Switching Frequency
o SPI™-Compatible Serial Interface
o Easy-to-Use Menu-Driven Software
When using the DAC, the EV kit connects to the parallel
®
port of a computer running Windows 95, 98, or ±000.
o Includes Windows 95-/98-/2000-Compatible
Software and Demo PC Board
o Surface-Mount Construction
o Fully ꢀssembled and Tested
Ordering Information
PART
TEMP RANGE
IC PACKAGE
48 Thin QFN
(7mm ✕ 7mm)
MAX1978EVKIT
0°C to +70°C
SPI is a trademark of Motorola, Inc.
Windows is a registered trademark of Microsoft Corp.
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
4.7µF, 6.3V X5R, ceramic capacitor
(0805)
C5
0
Not installed (0402)
0.47µF, 6.3V X7R ceramic capacitor
(0603)
C1
1
4
4
1
Murata GRM21BR60J475M
Taiyo Yuden JMK212BJ475MG
TDK C2012X5R0J475M
1µF, 6.3V X5R ceramic capacitors
(0603)
Murata GRM188R60J105M
Taiyo Yuden JMK107BJ105MA
TDK C1608X5R1A105K
10µF, 6.3V X5R ceramic capacitors
(0805)
Murata GRM21BR60J106K
Taiyo Yuden JMK212BJ106MG
TDK C2012X5R0J106M
0.01µF, 16V X7R ceramic capacitor
(0402)
Murata GRP155R71C103K
Taiyo Yuden EMK105BJ103KV
TDK C1005X7R1E103K
C8
1
Murata GRM188R60J474K
Taiyo Yuden LMK107BJ474KA
TDK C1608X5R1A474K
0.047µF, 10V X7R ceramic capacitor
(0402)
Murata GRP155R71A473K
Taiyo Yuden LMK105BJ473KV
TDK C1005X7R1C473K
C2, C7, C12,
C17
C10
C16, C21
C19
1
0
1
Not installed (0603)
C3, C6, C9,
C11
22µF, 6.3V X5R ceramic capacitor
(1210)
Murata GRM32DR60J226K
Taiyo Yuden JMK325BJ226MM
TDK C3225X5R0J226M
C4
Component List continued on next page.
________________________________________________________________ Maxim Integrated Products
1
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.