DS2745U+ by Analog Devices

Low-Cost I²C Battery Monitor


The DS2745 remains in production, however, for new projects, we recommend ModelGauge m5 MAX17055 fuel gauge. 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 voltage-sense input, and temperature measurement takes place on-chip. A standard I²C 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.

Where to Buy

Prices starting from US$2.74

Distributor Stock
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Farnell
from US$3.22
198
in stock
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Analog Devices
from US$2.74
4,419
in stock
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Newark Electronics
from US$4.11
198
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element14
from US$3.47
198
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Features

16-Bit Bidirectional Current Measurement 1.56µV LSB, ±51.2mV Dynamic Range 104µA LSB, ±3.4A Dynamic Range (RSNS = 15mΩ)
1.56µV LSB, ±51.2mV Dynamic Range
104µA LSB, ±3.4A Dynamic Range (RSNS = 15mΩ)
Current Accumulation Register Resolution 6.25µVhr LSB, ±204.8mVh Range 0.417mAhr LSB, ±13.65Ah Range (RSNS = 15mΩ)
6.25µVhr LSB, ±204.8mVh Range
0.417mAhr LSB, ±13.65Ah Range (RSNS = 15mΩ)
11-Bit Voltage Measurement
4.88mV LSB, 0V to 5V Input Range
11-Bit Temperature Measurement
0.125°C Resolution, -20°C to +70°C
Industry Standard I²C Interface
Low Power Consumption: Active Current: 70µA typical, 100µA max Sleep Current: 1µA typical, 3µA max
Active Current: 70µA typical, 100µA max
Sleep Current: 1µA typical, 3µA max

Specifications

Functions Fuel Gauge
Battery Type 1 Cell Li-Ion3-Cell NiMH
Interface 2-Wire
Parameters Measured CurrentTemperatureVoltage
End Equipment Host
VSUPPLY (V) (min) 2.5
VSUPPLY (V) (max) 5.5
Package/Pins UMAX/8
Oper. Temp. (°C) -40 to +85
BudgetaryPrice (See Notes) 2.65


DS2745U+ Semiconductors - ICs by Analog Devices

IC I²C BATTERY MONITOR LOW COST

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Battery Type Lithium
IC Interface Type 2 Wire I2C Serial
No. of Batteries 3
Supply Voltage Min 2.5V
Supply Voltage Max 5.5V
Battery IC Case Style µMAX
No. of Pins 8Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Base Number 2745
Battery Management Function Status Monitor
Control Interface I2C Serial
Operating Temperature Range -40°C to +85°C
Supply Voltage Range 2.5V to 4.5V
Termination Type Surface Mount Device

Alternative Descriptions

Low-Cost I²C Battery Monitor | Analog Devices
Ic, I²C Battery Monitor, Low Cost | Newark Electronics
IC, I²C BATTERY MONITOR, LOW COST | element14

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DS2745U+ ?

Additional datasheets, footprints and schematics for DS2745U+ are listed on our Part Details page. You can also find images and similar parts to DS2745U+ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for DS2745U+ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view DS2745U+ price breaks, MOQs, lead times, inventory and SKUs from distributors.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the DS2745U+ you can contact the distributor directly for product support, shipping queries etc.

Is the DS2745U+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for DS2745U+ have stock available?

Authorised distributors including Analog Devices, Newark Electronics, element14 and Farnell have stock available or on a lead time for DS2745U+ .

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