ICS1722
current source
(open circuit voltage = 12V)
+ 5 V
+
R1 = 10k
R3 = 2.2k
OPREF = 1.86V
R4 = 1.3k
6 cells
(9.6 V)
1.60V (battery present)
2.00V (no battery)
VIN =
{
R2 = 2k
-
Resistor divider at the OPREF pin
Resistor divider at the VIN pin
Figure 8: Open Circuit Reference Example
Power: VDD Pin
Grounding: VSS Pin
This pin must have a direct connection to a solid ground plane.
The power supply for the device must be connected to the VDD
pin. The voltage should be +5 VDC and should be supplied to the
part through a regulator that has good noise rejection and an
adequate current rating. The controller requires up to a maximum
of 11mA with VDD=5.00V.
Data Tables
Table 5: Absolute Maximum Ratings
Supply Voltage
Logic Input Levels
Ambient Operating Temperature
6.5
V
V
-0.5 to VDD + 0.5
0 to 70
°C
°C
Storage Temperature
-55 to 150
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only.
Functional operation of the device at the Absolute Maximum Ratings or other conditions not consistent with the characteristics shown in this
document is not recommended. Exposure to absolute maximum rating conditions for extended periods may affect product reliability.
12
GALAXY [ GALAXY POWER, INC. ]
