DS2780E+T&R Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The DS2780E+T&R is a stand-alone fuel gauge IC from Analog Devices designed for single-cell Li-Ion or Li-Polymer battery management. It measures voltage, temperature, and current to compute accurate state-of-charge via a 1-Wire interface, housed in a compact 8-pin TSSOP package. Available in tape-and-reel for high-volume production with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- DS2780E+T&R Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -20.0°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Accurate state-of-charge estimation using voltage, temperature, and current measurements
- Integrated 1-Wire interface simplifies host microcontroller connectivity with a single pin
- On-chip 32-byte EEPROM stores battery characteristics and capacity parameters
- Supports single-cell Li-Ion/Li-Polymer batteries with cell voltage measurement accuracy of ±7 mV
- Integrated current accumulation register for coulomb counting over time
- Temperature measurement range: -40°C to +85°C for wide operating environments
- Compact 8-pin TSSOP package for space-constrained portable designs
Applications
The DS2780E+T&R is ideal for portable consumer electronics such as laptops, tablets, and power banks that require accurate battery state-of-charge reporting to the host processor. Its 1-Wire interface minimises pin count on the battery pack connector while still delivering voltage, current, and temperature data critical for user-facing charge indicators. It is also widely used in medical instruments and industrial handheld devices where reliable remaining capacity estimation is essential for safe operation.
Specifications
| Manufacturer Package Code | 8-TSSOP_4.4-4.4_MM |
| Reach Compliance Code | Compliant |
| Date Of Intro | 2004-12-10 |
| YTEOL | 10 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | BATTERY GAUGE |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.105mA |
| Supply Voltage-Max (Vsup) | 4.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 3.8V |
| Surface Mount | YES |
| Temperature Grade | OTHER |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How accurately does the DS2780E+T&R measure battery cell voltage for state-of-charge estimation?
The DS2780E+T&R measures single-cell Li-Ion battery voltage with an accuracy of ±7 mV across its full operating range. This precision, combined with integrated current accumulation via coulomb counting and a temperature sensor with ±1°C accuracy, allows the fuel gauge algorithm to maintain state-of-charge estimation error below 5% under typical discharge profiles, which is sufficient for consumer battery indicator applications.
What communication interface does the DS2780E+T&R use and how does it connect to a host MCU?
The DS2780E+T&R uses a 1-Wire interface, requiring only a single data line plus ground to communicate with the host microcontroller. The 1-Wire protocol operates at standard speed (16.3 kbit/s) or overdrive speed (142 kbit/s), making it straightforward to implement on any GPIO pin of a PIC, ARM, or AVR microcontroller using Analog Devices-provided firmware libraries.
For a compact wearable design, how small is the DS2780E+T&R footprint and what battery chemistry does it support?
The DS2780E+T&R comes in an 8-pin TSSOP package measuring approximately 4.4 mm × 4.4 mm, making it suitable for space-constrained wearable PCBs. It supports single-cell Li-Ion and Li-Polymer chemistries with cell voltage operating range from 2.5V to 4.3V, covering the full charge-discharge window of standard 3.7V nominal lithium cells used in smartwatches, fitness trackers, and wireless earbuds.
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Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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