DS2788
PRODUCTIONStand-Alone Fuel-Gauge IC with LED Display Drivers
The Industry's Smallest Stand-Alone Fuel Gauge That Integrates LED Display Drivers and a Pushbutton Input for Multiple Li+ Batteries
- Part Models
- 2
- 1ku List Price
- Starting From $6.26
Overview
- Five 30mA Open-Drain Drivers for Driving LED Fuel-Gauge Display
- Debounced Fuel-Gauge Display Enable
- Internal Voltage Measurement Gain Register for Trimming External Voltage-Divider
- Pin for Driving FETs to Enable Voltage-Divider Only During Voltage Measurement, Conserving Power
- Precision Voltage, Temperature, and Current Measurement System
- Accurate, Temperature-Stable, Internal Time Base
- Absolute and Relative Capacity Estimated from Coulomb Count, Discharge Rate, Temperature, and Battery Cell Characteristics
- Accurate Warning of Low Battery Conditions
- Automatic Backup of Coulomb Count and Age Estimation to Nonvolatile (NV) EEPROM
- Gain and Tempco Calibration Allows the Use of Low-Cost Sense Resistors
- 24-Byte Battery/Application Parameter EEPROM
- 16-Byte User EEPROM
- Unique ID and Multidrop 1-Wire® Interface
- 14-Pin TSSOP Package
The DS2788 measures voltage, temperature, and current, and estimates available capacity for rechargeable lithium-ion (Li+) and Li+ polymer batteries. Cell characteristics and application parameters used in the calculations are stored in on-chip EEPROM. The available capacity registers report a conservative estimate of the amount of charge that can be removed given the current temperature, discharge rate, stored charge, and application parameters. Capacity estimation is reported in mAh remaining and percentage of full.
LED display drivers and a debounced input make display of the capacity information easy. The LED pins can directly sink current, requiring only a resistor for setting the current in the LED display, thus reducing space and cost.
Applications
- Digital Cameras
- Electric Bicycles
- Electric Vehicles
- Power Tools
- Uninterruptible Power Supply
Documentation
Data Sheet 1
Design Note 1
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS2788E+ | Thin Shrink Small-Outline Package | ||
| DS2788E+T&R | Thin Shrink Small-Outline Package |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Dec 11, 2018 - 1754N ASSEMBLY |
||
| DS2788E+ | PRODUCTION | |
| DS2788E+T&R | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
Software Development 1
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