DS2756
High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode
Provides Key Hardware Components Required to Accurately Estimate Remaining Capacity by Integrating Low-Power Precision Measurements of Temperature, Voltage, Current, Current Accumulation, and Nonvolatile Data Storage
MyMaxim SubscriptionsProduct Details
| Functions | Fuel Gauge |
| Battery Type | 1 Cell Li-Ion 3-Cell NiMH |
| Interface | 1-Wire |
| User Data Storage (Bytes) | 8 SRAM 96 EEPROM |
| Parameters Measured | Current Temperature Voltage |
| End Equipment | Pack |
| VSUPPLY (V) (min) | 3 |
| VSUPPLY (V) (max) | 5.5 |
| Package/Pins | TSSOP/8 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | 3.18 |
Simplified Block Diagram
Technical Docs
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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.
Parameters
| Functions | Fuel Gauge |
| Battery Type | 1 Cell Li-Ion 3-Cell NiMH |
| Interface | 1-Wire |
| User Data Storage (Bytes) | 8 SRAM 96 EEPROM |
| Parameters Measured | Current Temperature Voltage |
| End Equipment | Pack |
| VSUPPLY (V) (min) | 3 |
| VSUPPLY (V) (max) | 5.5 |
| Package/Pins | TSSOP/8 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | 3.18 |
Key Features
- Programmable Suspend Mode
- Accurate Current Accumulation
- 2% ±4µV over ±64mV Input Range
- 2% ±200µA over ±3.2A with 20mΩ Sense
- Current Measurement
- 9-Bit Snapshot Measurement
- 12-Bit Average Updated Every 88ms
- 15-Bit Average Updated Every 2.8s
- Voltage Measurement
- 9-Bit Snapshot Measurement
- 10-Bit Average Updated Every 4ms
- Temperature Measurement
- 10-Bit with 0.125°C Resolution
- Snapshot mode allows instantaneous power measurement
- Host Alerted When Accumulated Current or Temperature Exceeds Programmable Limits
- 96 Bytes of Lockable EEPROM
- 8 Bytes of General-Purpose SRAM
- Dallas 1-Wire Interface with Unique 64-Bit Address and Standard or Overdrive Timing
- 3mm Dimension of 8-Pin TSSOP Package Allows Mounting on Side of Thin Prismatic Li+ and Li+/Polymer Cells
Applications/Uses
Description
The DS2756 remains in production, however, for new projects, we recommend ModelGauge m5 MAX17201 fuel gauge.
The DS2756 high-precision battery fuel gauge is a data-acquisition and information-storage device tailored for cost-sensitive and space-constrained 1-cell Li+/polymer battery-pack applications. The DS2756 provides the key hardware components required to accurately estimate remaining capacity by integrating low-power, precision measurements of temperature, voltage, current, and current accumulation, as well as nonvolatile (NV) data storage, into the small footprint of a 3.0mm x 4.4mm 8-pin TSSOP package.Through its 1-Wire® interface, the DS2756 gives the host system read/write access to status and control registers, instrumentation registers, and general-purpose data storage. Each device has a unique factory-programmed 64-bit net address that allows it to be individually addressed by the host system, supporting multibattery operation.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.
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