19-2354; Rev 0; 2/02
MAX1898 Evaluation Kit
General Description
The MAX1898 evaluation kit (EV kit) is a complete, fully
assembled and tested single-cell lithium-ion (Li+) bat-
tery charger. The EV kit charges a single Li+ battery to
4.2V using a power supply with an output voltage of
4.7V to 12V. At input voltages greater than 6V, the
allowed charging current may be limited by the power-
dissipation rating of the external MOSFET. Jumpers on
the EV kit allow simple adjustment to the total charging
time and charger restart voltage levels. An LED indi-
cates the cell鈥檚 charging status. To charge a Li+ battery
to 4.1V, replace the MAX1898 (U1) IC on the EV kit
board with the MAX1898EUB41.
o
Simple Stand-Alone Li+ Charger
o
Safely Pre-Charges Deeply-Discharged Cells
o
Top-Off Charging to Achieve Full Battery Capacity
o
Fully Assembled and Tested
Features
Evaluates: MAX1898
Selector Guide
PART NUMBER
MAX1898EUB42
MAX1898EUB41
CHARGING VOLTAGE
4.2V
4.1V
PACKAGE
10-pin 碌MAX
10-pin 碌MAX
PART
MAX1898EVKIT
Ordering Information
TEMP RANGE
0擄C to +70擄C
IC PACKAGE
10 碌MAX
Component List
DESIGNATION QTY
C1
1
DESCRIPTION
10碌F, 10%, 16V tantalum capacitor
(B) AVX TPSB106K016R0800
0.1碌F, 10%, 16V X7R
ceramic capacitors (0603)
TDK C1608X7R1C104KT or
Taiyo Yuden EMK107BJ104KA
Not installed, capacitor (1206)
1.0碌F, 10%, 10V X5R
ceramic capacitor (0603)
TDK C1608X5R1A105K
1A 30V Schottky diode (SOT123)
Nihon EP10QY03 or
Toshiba CRS02
Red light-emitting diode (LED)
DESIGNATION QTY
JU1, JU2,
JU3
P1
R1
R2
U1
None
None
None
None
3
DESCRIPTION
2-pin headers
30V 5.7A 3W P-channel power
MOSFET (SOT-223)
Fairchild NDT454P
1.74k鈩?鹵1% resistor (0603)
Not Installed, resistor (0805)
MAX1898EUB42 (10-pin 碌MAX)
Shunts (JU1, JU2, JU3)
MAX1898 PC board
MAX1898 data sheet
MAX1898 EV kit data sheet
C2, C3
2
1
1
0
1
3
1
1
1
C4
C5
0
1
D1
D2
1
1
________________________________________________________________
Maxim Integrated Products
1
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.
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