Linear DC1104A Quick Start Manual

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT DC1104A
DESCRIPTION
Demonstration circuit DC1104A is a single-battery
charge controller with featuring the LTC4009-2.
The input voltage is 13.5 to 20V. The charger out-
put voltage is programmed by jumpers to support
1, 2, 3 and 4-Cell Li-ion batteries with a cell vol-
tage of 4.2V/Cell. The maximum charge current is
2A. The demo board is initially configured for
12.6V Li-ion batteries. The board will automatically
charge a battery as soon as input power is applied
with a battery connected prior to power up. Status
LEDs are provided for CHG, ACP, C/10, and ICL
although this charger is not a smart battery charg-
er, a popular smart battery connector is provided
that can be used for data-logging with the
Table 1. Performance Summary
PARAMETER
Maximum Input Voltage
Default Battery Charge Voltage Jumper Selectable: 4.2V, 8.4V, 12.6V & 16.8V
Minimum Input Voltage
Shutdown Configuration
Input Current Limit
Maximum Charge Current
QUICK START PROCEDURE
MULTI CELL LI-ION BATTERY CHARGER BOARD
CONDITIONS / NOTES
Limited by Input Capacitor Volt Ratings.
Vin > Vbat Float voltage & DCDIV > 1.2V.
Vin > Vbatmax > 6V,
Jumper Selectable: OFF, THM & ON
Set by value of R2 at 100mV.
Vin > Vbat > 6V & DCDIV > 1.2V
OPTIONAL DC1223A-B Demoboard and soft-
ware. To be clear, you DO NOT need a smart bat-
tery to use this board. The optional DC1223A-B
SMBus-to-USB port adapter and associated soft-
ware is to monitor a smart battery for demonstra-
tion purposes only. Contact your LT representative
for ordering a DC1223A-B.
This Demoboard is capable of supporting the
LTC4009 and LTC4009-1 with a simple IC swap-
out. See schematic.
Design files for this circuit board are available.
Call the LTC factory.
VALUE
20V +/- 10 %
12.6V
13.5V when using a 12.6V Li-ion battery.
Recommend 15V.
ON
2 Amps using a 0.05 Ohm resistor.
2A +/- 5%
LTC4009-2
1