| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
1,200 pcs
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1200 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Interface | |
| Supply Voltage | |
| Tape & Reel |
The DS2740BU is a high-precision coulomb counter designed by MAX for battery capacity monitoring in cost-sensitive applications. It features 13-bit bidirectional current measurement with a dynamic range of ±51.2mV and an LSB of 6.25μV. The device includes a current accumulation register with a resolution of 6.25μVhr.
Communication is handled via a Dallas 1-Wire interface, which allows host systems read/write access to status and measurement registers. Each DS2740BU has a unique 64-bit factory-programmed address, enabling individual addressing for multibattery slot operation. The interface supports standard and overdrive timings.
With low power consumption, the DS2740BU has an active current of 65μA max and a sleep current of 1μA max. It operates on a supply voltage range of 2.7V to 5.5V. The device is available in an 8-pin μMAX package and is suitable for mounting within the battery pack itself.
Key electrical specifications include a ±2.56A dynamic range with an external 20mΩ sense resistor and ±5.12A with an external 10mΩ sense resistor. The analog input filter extends the dynamic range for pulse-load applications.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.75 | $0.75 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The DS2740BU offers 13-bit bidirectional current measurement.
The LSB voltage for the DS2740BU is 6.25μV.
With an external 20mΩ sense resistor, the dynamic range of the DS2740BU is ±2.56A.
The current accumulation register resolution is 6.25μVhr.
The DS2740BU uses a Dallas 1-Wire interface.
The maximum active current consumption is 65μA.
The supply voltage range is 2.7V to 5.5V.