ds2761 Maxim Integrated Products, Inc., ds2761 Datasheet - Page 24

• Manufacturer Part Number: ds2761
• Description: Ds2761 High-precision Li+ Battery Monitor
• Manufacturer: Maxim Integrated Products, Inc.

ELECTRICAL CHARACTERISTICS:
1-WIRE INTERFACE
EEPROM RELIABILITY SPECIFICATION
NOTES
1) All voltages are referenced to V
2) See the Ordering Information section to determine the corresponding part number for each V
3) Internal current-sense resistor configuration.
4) External current-sense resistor configuration.
5) Self-heating due to output pin loading and sense resistor power dissipation can alter the reading from ambient conditions.
6) Voltage offset measurement is with respect to V
7) The current register supports measurement magnitudes up to 2.56A using the internal sense resistor option and 64mV with
8) Current offset error null to ±1LSB typically requires 3.5s in-system calibration by user.
9) Current gain error specification applies to gain error in converting the voltage difference at IS1 and IS2, and excludes any
10) Typical value for t
11) Four year data retention at +70°C.
12) Typical load capacitance on
13) Test conditions are PLS = 4.1V, V
14) Error at time of shipment from Dallas Semiconductor is 3% max. Board mounting processes may cause the current gain
Time Slot
Recovery Time
Write 0 Low Time
Write 1 Low Time
Read Data Valid
Reset Time High
Reset Time Low
Presence Detect High
Presence Detect Low
SWAP Timing Pulse Width
SWAP Timing Pulse Falling
Edge to DC Release
SWAP Timing Pulse Rising Edge
to DC Engage
DQ Capacitance
Copy to EEPROM Time
EEPROM Copy Endurance
the external resistor option. Compensation of the internal sense resistor value for process and temperature variation can
reduce the maximum reportable magnitude to 1.9A.
error remaining after the DS2761 compensates for the internal sense resistor’s temperature coefficient of 3700ppm/°C to
an accuracy of ±500ppm/°C. The DS2761 does not compensate for external sense resistor characteristics, and any error
terms arising from the use of an external sense resistor should be taken into account when calculating total current
measurement error.
V
error to widen to as much as 10% for devices with the internal sense resistor option. Contact factory for on-board
recalibration procedure for devices with the internal sense resistor option to improve accuracy.
DD
= 0V is 10mA.
PARAMETER
PARAMETER
ERR
is at 3.6V and +25°C.
DC
SS
.
and
DD
= 2.5V. Maximum current for conditions of PLS = 15V,
CC
SYMBOL
SYMBOL
t
t
t
t
is 1000pF.
t
t
SWOFF
N
t
t
t
SWON
t
LOW0
LOW1
t
C
t
t
SLOT
RSTH
RSTL
RDV
SWL
REC
PDH
EEC
PDL
EEC
DQ
OV
at +25°C.
24 of 24
25000
MIN
MIN
480
480
0.2
60
60
15
60
1
1
0
0
(-20°C to +70°C, 2.5V £ V
(-20°C to +70°C, 2.5V £ V
TYP
TYP
2
MAX
MAX
120
120
960
240
120
15
15
60
60
10
1
1
OV
UNITS
UNITS
cycles
value.
ms
pF
m
m
m
m
m
m
m
m
m
m
ms
ms
s
s
s
s
s
s
s
s
s
s
DD
DD
NOTES
NOTES
£ 5.5V)
£ 5.5V)
12
12
11