DS2740U+ by Analog Devices

High-Precision Coulomb Counter


The DS2740 remains in production, however, for new projects, we recommend ModelGauge m5 MAX17211 fuel gauge. The DS2740 provides high-precision current-flow measurement data to support battery-capacity monitoring in cost-sensitive applications. Current is measured bidirectionally over a dynamic range of 15 bits (DS2740U) or 13 bits (DS2740BU), with the net flow accumulated in a separate 16-bit register. Through its 1-Wire® interface, the DS2740 allows the host system read/write access to status and current measurement registers. Each device has a unique factory-programmed 64-bit net address that allows it to be individually addressed by the host system, supporting multibattery slot operation. The interface can be operated with standard or overdrive timing. Although the DS2740 is primarily intended for location on the host system, it is also suited for mounting in the battery pack. The DS2740 and FuelPack™ algorithms, along with host measurements of temperature and voltage, form a complete and accurate solution for estimating remaining capacity.

Where to Buy

Prices starting from US$3.08

Distributor Stock
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RS
from US$3.58
116
in stock
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Analog Devices
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element14
from US$3.24
51
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Farnell
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Newark Electronics
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Features

15-Bit Bidirectional Current Measurement (DS2740U) 1.56µV LSB and ±51.2mV Dynamic Range 78µA LSB and ±2.56A Dynamic Range with External 20mΩ Sense Resistor (RSNS) 156µA LSB and ±5.12A Dynamic Range with External 10mΩ Sense Resistor (RSNS)
1.56µV LSB and ±51.2mV Dynamic Range
78µA LSB and ±2.56A Dynamic Range with External 20mΩ Sense Resistor (RSNS)
156µA LSB and ±5.12A Dynamic Range with External 10mΩ Sense Resistor (RSNS)
13-Bit Bidirectional Current Measurement (DS2740BU) 6.25µV LSB and ±51.2mV Dynamic Range 312µA LSB and ±2.56A Dynamic Range with External 20mΩ Sense Resistor (RSNS) 625µA LSB and ±5.12A Dynamic Range with External 10mΩ Sense Resistor (RSNS)
6.25µV LSB and ±51.2mV Dynamic Range
312µA LSB and ±2.56A Dynamic Range with External 20mΩ Sense Resistor (RSNS)
625µA LSB and ±5.12A Dynamic Range with External 10mΩ Sense Resistor (RSNS)
Analog Input Filter (IS1, IS2) Extends Dynamic Range for Pulse-Load Applications
Current Accumulation Register Resolution 6.25µVhr (Both DS2740U and DS2740BU) 0.3125mAhr with External 20mΩ RSNS 0.6250mAhr with External 10mΩ RSNS
6.25µVhr (Both DS2740U and DS2740BU)
0.3125mAhr with External 20mΩ RSNS
0.6250mAhr with External 10mΩ RSNS
Dallas 1-Wire Interface Unique 64-Bit Device Address Standard and Overdrive Timings (OVD)
Unique 64-Bit Device Address
Standard and Overdrive Timings (OVD)
Low Power Consumption: Active Current: 65µA max Sleep Current: 1µA max
Active Current: 65µA max
Sleep Current: 1µA max

Specifications

Functions Fuel Gauge
Battery Type 1 Cell Li-Ion3-Cell NiMH
Interface 1-Wire
Parameters Measured Current
End Equipment Pack
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 5.5
Package/Pins UMAX/8
Oper. Temp. (°C) -40 to +85
BudgetaryPrice (See Notes) 2.19


DS2740U+ Semiconductors - ICs by Analog Devices

COULOMB COUNTER 15BIT UMAX-8

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

Specifications

Battery Type -
IC Interface Type Serial
No. of Batteries 1
Supply Voltage Min 2.7V
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)

Alternative Descriptions

High-Precision Coulomb Counter | Analog Devices
COULOMB COUNTER, 15BIT, UMAX-8 | element14
Coulomb Counter, 15Bit, Umax-8 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DS2740U+ ?

Additional datasheets, footprints and schematics for DS2740U+ are listed on our Part Details page. You can also find images and similar parts to DS2740U+ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for DS2740U+ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view DS2740U+ 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 DS2740U+ you can contact the distributor directly for product support, shipping queries etc.

Is the DS2740U+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for DS2740U+ have stock available?

Authorised distributors including Analog Devices, RS, element14, Farnell and Newark Electronics have stock available or on a lead time for DS2740U+ .

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Stock availability and lead times will be displayed for DS2740U+ often in real-time on the comparison pages.

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