19-2052; Rev 0; 5/01
MAX1818 Evaluation Kit
General Description
The MAX1818 linear regulator evaluation kit (EV kit) pro-
vides a regulated +1.8V output voltage from a +2.5V to
+5.5V input source. It delivers up to 500mA output current.
The EV kit is a fully assembled and tested surface-
mount PC board. It can also evaluate other preset volt-
ages and other output voltages in the +1.25V to +5.0V
range by using external resistors.
o
+2.5V to +5.5V Input Voltage Range
o
Up to 500mA Output Current
o
Output Voltage
+1.8V Fixed Output Voltage (MAX1818EUT18)
+1.25 to +5.0V Adjustable Output Voltage
(External Divider)
o
Power-OK Output
o
6-Pin SOT23 Package
o
Surface-Mount Construction
o
Fully Assembled and Tested
Features
Evaluates: MAX1818EUT15/18/20/25/33/50
Component List
DESIGNATION
C1
QTY
1
DESCRIPTION
1碌F
鹵10%,
10V X7R ceramic
capacitor (0805)
Taiyo Yuden LMK212BJ105KG
4.7碌F
鹵20%,
6.3V X5R ceramic
capacitor (0805)
Taiyo Yuden JMK212BJ475MG or
TDK C2012X5R0J475M
Not installed (0603)
Not installed, pads shorted with PC
trace (0603)
100k鈩?/div>
鹵5%
resistor (0603)
MAX1818EUT18 (6-pin SOT23)
3-pin header
Shunt
MAX1818 PC board
MAX1818 EV kit data sheet
MAX1818 data sheet
Ordering Information
PART
MAX1818EVKIT
TEMP. RANGE
0擄C to +70擄C
IC-PACKAGE
6 SOT23
C2
1
R1
R2
R3
U1
JU1
None
None
None
None
0
0
1
1
1
1
1
1
1
Note:
To evaluate the MAX1818EUT15, /20, /25, /33, or /50,
request a MAX1818EUT15, /20, /25, /33, or /50 free sample with
the MAX1818 EV kit. Refer to soldering information in Absolute
Maximum Rating section of MAX1818 data sheet for mass
production solder reflow advice.
Quick Start
The MAX1818 EV Kit is fully assembled and tested.
Follow these steps to verify board operation.
Do not turn on the power supply until all connec-
tions are completed.
1) Verify that the shunt is across pins 1 and 2 of
jumper JU1 (SHDN) (Table 1).
2) Connect a voltmeter to the VOUT pad. Connect the
ground to the GND pad closest to VOUT.
Component Suppliers
SUPPLIER
Taiyo Yuden
TDK
PHONE
408-573-4150
847-390-4373
FAX
408-573-4159
847-390-4428
3) Connect a +2.5V to +5.5V supply to the VIN pad.
Connect the supply ground to the GND pad closest
to VIN.
4) Turn on the power supply, and verify that the output
is the preset voltage: +1.8V.
To evaluate other voltages, refer to
Evaluating Other
Output Voltages.
Note:
Please indicate that you are using the MAX1818 when
contacting these component suppliers.
________________________________________________________________
Maxim Integrated Products
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For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
Maxim
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