ICS1700AEB Galaxy Power, Inc., ICS1700AEB Datasheet - Page 2

• Manufacturer Part Number: ICS1700AEB
• Description: Ics1700a Evaluation Board.
• Manufacturer: Galaxy Power, Inc.

ICS1700A Evaluation Board
The board provides several low value resistors that may be used to
set the amplitude of the discharge pulse. The resistors can be
installed in any or all of the locations labeled R1, R2, or R3. The
resistor value is calculated by setting the amplitude of the
discharge pulse. The discharge pulse amplitude is typically 2.5
times the charge current based on 1.4V/cell. The resistor locations
R1, R2, and R3 are connected in series. The unused locations must
have a jumper to complete the circuit. Not using the discharge
pulse feature will not affect the performance of the ICS1700A.
The ICS1700A is capable of operating at four different charge
rates; 4C (15 minutes), 2C (30 minutes), 1C (60 minutes) and C/2
(120 minutes). The charge rate is selected by SW1 dip switch
settings. Table 2 shows the proper settings to use for the desired
charge rate.
Power Requirements
The evaluation board uses a regulator to provide +5 volts for the
controller. The regulator allows operation from a DC supply of 8 to
32 volts when the supply is connected to the +V terminal. The
board may also be operated from an external 5 volt supply by
removing the regulator (VR1), wiring a jumper between regulator
pins 1 and 3, and by connecting 5 volts directly to the +5V
terminal.
C/2 (120 min)
Charge Rate
4C (15 min)
2C (30 min)
1C (60 min)
SW1-1
OFF
OFF
(S0)
ON
ON
SW1-2
OFF
OFF
(S1)
ON
ON
Table 2: Charge Rate List
Topping Charge pulse
one every 40 sec
one every 20 sec
one every 10 sec
one every 5 sec
Rate
2
Connections To External Circuitry
A normally closed thermal switch or a thermistor should be
connected to the TS terminal. If a thermal protection device is not
used, the TS terminal must be grounded.
Connect the battery between the +BAT and GND terminals.
Connect the external charging current source and its return between
the +CUR and GND terminals.
Two charge signals are provided to control external charging
circuitry. CHARGE is high when the charging current is on. The
other signal CHARGE is low when the charging current is on.
The charging circuitry should provide a current at an amplitude
that is equal to the product of the battery capacity and the desired
charge rate. For example, to charge a 1.2 ampere hour battery in 30
minutes, the current required would be 2.4 amps or 2C where ‘C’ is
the battery capacity.
It is important to note that the ICS1700A does not control the
current flowing into the battery in any way other than turning it on
and off. The charging source should be a constant current type.
Maintenance Charge
one every 160 sec
one every 80 sec
one every 40 sec
one every 20 sec
Pulse Rate
Duration (after reset)
Fast Charge Timer
210 min
30 min
60 min
90 min