Rainbow Electronics DS2745 - Manual (Page 2)

DS2745 Low-Cost I 2 C Battery Monitor
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ABSOLUTE MAXIMUM RATINGS*
Voltage on All Pins Relative to V
SS
-0.3V to +6V
Operating Temperature Range -40°C to +85°C
Storage Temperature Range -55°C to +125°C
Soldering Temperature See IPC/JEDECJ-STD-020A
* This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
(2.5V £ V
DD
£ 5.5V; T
A
= 0 °C to +70°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
DD
(Note 1) 2.5 5.5 V
Serial Data I/O Pin SDA (Note 1) -0.3 +5.5 V
Serial Clock Pin SCL (Note 1) -0.3 +5.5 V
Programmable I/O Pin PIO (Note 1) -0.3 +5.5 V
VIN Pin V
IN
(Note 1) -0.3 V
DD
+0.3 V
DC ELECTRICAL CHARACTERISTICS
(2.5V £ V
DD
£ 4.5V; T
A
= 0 °C to +70°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
70 100
Active Current I
ACTIVE
V
DD
= 5.5V 105
mA
Sleep-Mode Current I
SLEEP
SCL = SDA = V
SS
,
PIO = V
SS
1 3 mA
Current Resolution I
LSB
1.56 mV/R
Current Full-Scale
Magnitude
I
FS
(Note 1) 51.2 mV/R
Current Offset I
OERR
(Note 2) - 7.82 + 12.5 mV/R
Current Gain Error I
GERR
- 1.0 +1.0
% of
reading
Accumulated Current
Resolution
q
CA
6.25 mVh/R
Accumulated Current
Offset
q
OERR
V
SNS
= V
SS
, (Notes 4, 5) - 188 + 0
µVh/R
per day
Voltage Resolution V
LSB
4.88 mV
Voltage Full-Scale V
FS
0 4.992 V
Voltage Error V
GERR
(Note 12) - 25 + 25 mV
Temperature Resolution T
LSB
0.125 °C
Temperature Error T
ERR
- 3 + 3 ºC
Current Sample Clock
Frequency
f
SAMP
18.6 kHz
Timebase Accuracy t
ERR
V
DD
= 3.8V, T
A
= +25°C ±1 %