MAX1874EVKIT Maxim Integrated, MAX1874EVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX1874EVKIT
• Description: Battery Management Evaluation Kit for the MAX1874
• Manufacturer: Maxim Integrated
• Series: MAX1874r

Specifications of MAX1874EVKIT

• Battery Type: Li-Ion, Li-Poly
• Operating Supply Voltage: 4.35 V to 6.5 V
• Charge Safety Timers: No
• Operating Supply Current: 4 mA
• Temperature Monitoring: No

The MAX1874 EV kit is preset with a DC input fast-
charge current (I
jumper JU4 changes I
also be resistor-programmed by placing the shunt ON
jumper JU4 and changing the R5 and R6 resistors
using the equation below:
The MAX1874 EV kit is shipped with Q1 and D1 not
installed. To allow the USB to power the system load,
install a P-channel MOSFET such as the Fairchild
FDN302P, and a Schottky diode, such as the Fairchild
MBR0520L, on the Q1 and D1 pads, respectively, of the
MAX1874 EV kit board.
Evaluating Other DC Input Fast-
I
BATT
BATT
_______________________________________________________________________________________
= (R6 / (R5 + R6)) A
) of 750mA. Taking the shunt OFF
BATT
Charge Currents (I
Allowing USB to Power
to 1A. However, I
the System Load
BATT
BATT
can
)
MAX1874 Evaluation Kit
The MAX1874 EV kit is preset with thermistor sensing
disabled through jumper JU3. Removing jumper JU3
and installing a 10kΩ ±1% resistor for R4 allows an NTC-
type thermistor (10kΩ at +25°C) to be used. The thermis-
tor must be located in close proximity to the single-cell
Li+ battery with the ungrounded end connected to the
THRM pad of the MAX1874 EV kit board. Charging is
interrupted when the cold temperature limit is reached,
which typically occurs at V
is interrupted when the hot temperature limit is reached,
which typically occurs at V
Using Thermistor Sensing
THRM
THRM
≤ 0.87V.
≥ 2.22V. Charging also
3