DS2745 Maxim Integrated Products, DS2745 Datasheet
DS2745
Manufacturer Part Number
DS2745
Description
Low-Cost I2C Battery Monitor
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2745.pdf
(15 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS2745U
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Part Number:
DS2745U+
Manufacturer:
Maxim
Quantity:
2 505
Company:
Part Number:
DS2745U+T&R
Manufacturer:
APT
Quantity:
1 200
Part Number:
DS2745U+T&R
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
DS2745U+TR
Manufacturer:
MAXIM/美信
Quantity:
20 000
19-4631; 5/09
FEATURES
16-Bit Bidirectional Current Measurement
Current Accumulation Register Resolution
11-Bit Voltage Measurement
4.88mV LSB, 0V to 4.5V Input Range
11-Bit Temperature Measurement
0.125ºC Resolution, -20ºC to +70ºC
Industry Standard I
Low Power Consumption:
BLOCK DIAGRAM
Table 1. ORDERING INFORMATION
+Denotes lead(Pb)-free/RoHS-compliant package.
*I
Companies, conveys a license under the Philips I
conforms to the I
www.maxim-ic.com
DS2745U+
DS2745U+T&R
2
C is a trademark of Philips Corp. Purchase of I
1.56V LSB, ±51.2mV Dynamic Range
104A LSB, ±3.4A Dynamic Range (RSNS =
15m)
6.25Vhr LSB, ±204.8mVh Range
0.417mAhr LSB, ±13.65Ah Range
(R
Active Current:
70A typical, 100A max
Sleep Current:
1A typical, 3A max
SNS
= 15m)
PART
2
C Standard Specification as defined by Philips.
2
C* Interface
MARKING
2
2
C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated
C Patent Rights to use these components in an I
2745
2745
1 of 15
MAX package
DS2745U+ in Tape-and-Reel
PIN CONFIGURATION
DESCRIPTION
The DS2745 provides current-flow, voltage, and
temperature measurement data to support battery-
capacity monitoring in cost-sensitive applications. The
DS2745 can be mounted on either the host side or
pack side of the application. Current measurement
and coulomb counting is accomplished by monitoring
the voltage drop across an external sense resistor,
voltage measurement is accomplished through a
separate
measurement takes place on-chip. A standard I
interface with software programmable address gives
the controlling microprocessor access to all data and
status registers inside the DS2745. A low-power sleep
mode state conserves energy when the cell pack is in
storage.
APPLICATIONS
Cellular
GPS
PDAs
Handheld Products
See Table 1 for Ordering Information.
Low-Cost I
voltage-sense
SDA
SNS
SCL
PIO
2
PIN-PACKAGE
C system, provided that the system
1
2
3
4
MAX
2
C Battery Monitor
input,
8
7
6
5
www.DataSheet4U.com
and
VDD
VIN
CTG
VSS
DS2745
temperature
2
C
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