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Analog Devices Inc./Maxim Integrated DS2760BE+T&R
- Part No.:
- DS2760BE+T&R
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DS2760BE+T&R.pdf
- Description:
- IC BATT MONITOR LI-ION 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,417
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Product details
Overview
DS2760BE+T&R from Maxim Integrated is a high-precision Li⁺ battery monitor IC with integrated safety protection, 12-bit bidirectional current measurement (15.625 µV LSB, ±64 mV range), 4.88 mV voltage resolution, and 0.125°C temperature sensing. It features dual FET control outputs (CC/DC), programmable I/O, and 32 bytes of lockable EEPROM for secure battery data storage in portable power systems.
For engineers reviewing the DS2760BE+T&R datasheet, DS2760BE+T&R pinout, DS2760BE+T&R application, or DS2760BE+T&R equivalent, this device supports precise remaining capacity estimation, overvoltage/undervoltage/overcurrent protection, zero-volt recovery charging, and host-controlled battery pack monitoring via 1-Wire interface with unique 64-bit address.
Technical Context
The DS2760BE+T&R implements a dedicated analog front-end with dual current sense inputs (IS1/IS2) and internal 4.7 kΩ filtering resistors to support external sense resistor configurations. Its protection logic continuously monitors VIN, SNS, and PLS to trigger CC/DC FET control based on configurable thresholds including VOV = 4.35 V, VUV = 2.5 V, and short-circuit detection on the SNS pin.
It operates in Active Mode (≤90 µA) for real-time measurement and Sleep Mode (≤2 µA) triggered by DQ low >2 s, VIN < VUV, or SWAP command. The 1-Wire interface enables single-wire bidirectional communication with host microcontrollers, supporting multi-battery addressing and register-level access to instrumentation, status, and user memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V on VDD - powers internal circuitry and enables operation across full Li⁺ cell voltage range during charge/discharge cycles. |
| Overvoltage Threshold | 4.35 V (VOV) - factory-set trip point for charge FET disable to prevent Li⁺ cell overcharge; specific to DS2760BE variant. |
| Current Measurement | ±64 mV dynamic range, 15.625 µV LSB - supports external sense resistor selection for optimized accuracy and power loss trade-offs. |
| Voltage Resolution | 4.88 mV - enables precise cell voltage tracking for state-of-charge (SoC) calculation and undervoltage cutoff at 2.5 V. |
| Temperature Sensing | 0.125°C resolution using integrated sensor - eliminates need for external thermistor and enables thermal runaway detection. |
| 1-Wire Interface | Single-contact, parasitic-power-capable bus - allows daisy-chaining multiple battery monitors with unique 64-bit addresses. |
| Active Current | ≤90 µA - ensures minimal self-discharge impact on battery runtime during active monitoring. |
Pinout & Package
DS2760BE+T&R is housed in a 16-pin TSSOP package (5.0 mm × 4.4 mm, 0.65 mm pitch) with exposed pad for thermal performance. Pin functions are validated per Maxim's official DS2760 datasheet Rev. 3 (2006).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC | Charge Control Output | Open-drain p-channel FET gate driver - pulls high to disable charge path when overvoltage or charge overcurrent detected. |
| DC | Discharge Control Output | Open-drain p-channel FET gate driver - pulls high to disable discharge path during undervoltage, discharge overcurrent, or short circuit. |
| DQ | 1-Wire Data I/O | Single-wire bidirectional interface with 1 µA internal pull-down - enables host read/write access to registers and memory without additional control lines. |
| PLS | Pack Positive Terminal Input | Monitors charger attachment and provides zero-volt recovery current path from PLS to VDD for deeply depleted cells. |
| SNS | Sense Resistor Connection | Reference node for external current sense resistor - connects between VSS and sense element to enable bidirectional current measurement. |
| IS1 / IS2 | Current Sense Inputs | Differential pair with internal 4.7 kΩ resistors - filters noise and converts sense voltage to digital current value with 12-bit precision. |
| VIN | Voltage Sense Input | Direct connection to Li⁺ cell anode - measures cell voltage with 4.88 mV resolution for SoC and protection decisions. |
| PIO | Programmable I/O Pin | Open-drain output/input - controls LEDs, vibration motors, or switches under host firmware direction. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Volt Recovery Charging | Enables safe reactivation of deeply discharged Li⁺ cells (<0.5 V) via controlled current path from PLS to VDD, preventing irreversible damage. |
| Lockable EEPROM (32 B) | Secures immutable battery parameters (e.g., design capacity, chemistry ID) by locking blocks - prevents accidental or malicious overwrite during field operation. |
| Integrated Temperature Sensor | Eliminates external thermistor BOM cost and layout area while delivering 0.125°C resolution for accurate thermal profiling and safety cutoff. |
| Configurable Protection Delays | tOVD, tUVD, tOCD, tSCD programmable via EEPROM - allows tuning of response timing to match battery chemistry and system-level fault tolerance requirements. |
| Current Accumulator (±8.2 Ah) | Maintains net coulomb count in 0.25 mAh increments when internal 25 mΩ resistor used - directly supports fuel-gauge algorithms without host-side integration. |
Applications
| Smartphone Battery Packs | Power Tool Battery Modules |
|---|---|
|
Use Scenario: Real-time monitoring of multi-cell Li⁺ packs during fast charging and high-current discharge cycles. IC Role / Device Role / Timing Role: Primary safety monitor and data acquisition node - performs voltage/current/temperature sampling every 88 ms and triggers FET shutdown within microseconds of fault detection. Use Value: Prevents thermal runaway and cell venting by enforcing strict 4.35 V overvoltage limit and detecting short circuits via SNS pin threshold (VSC) before current exceeds 10 A. |
Use Scenario: Ruggedized battery packs requiring robust overcurrent protection during motor stall conditions and cold-temperature operation. IC Role / Device Role / Timing Role: Dual-role protector and telemetry hub - uses PIO pin to drive status LEDs and reports accumulated discharge current to host MCU for runtime prediction. Use Value: Enables zero-volt recovery charging after accidental deep discharge in workshop environments, extending usable battery life beyond 500 cycles. |
| Medical Portable Devices | Wearable Health Monitors |
|
Use Scenario: Life-critical battery management in infusion pumps and portable defibrillators where failure modes must be mitigated to ISO 13485 standards. IC Role / Device Role / Timing Role: Certified safety element - stores calibrated protection thresholds and usage logs in lockable EEPROM for audit trail and regulatory compliance. Use Value: Guarantees undervoltage cutoff at 2.5 V to avoid lithium plating, with independent hardware-based shutdown that cannot be overridden by firmware faults. |
Use Scenario: Ultra-low-power wearable devices requiring sub-µA sleep current and precise SoC estimation over multi-week usage. IC Role / Device Role / Timing Role: Energy-efficient telemetry agent - enters Sleep Mode (≤2 µA) when DQ line is idle, waking only on PS pin activation or charger insertion. Use Value: Extends battery runtime by 18% compared to discrete ADC + MCU solutions, due to integrated 12-bit measurement and no software overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Li⁺ battery monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ20Z75-V160 | TI fuel gauge with integrated 5-mΩ sense resistor; supports SMBus instead of 1-Wire; higher current resolution (0.125 mA) but fixed internal sensing. | Requires SMBus host interface and lacks PLS-based zero-volt recovery; better suited for notebook battery packs than compact consumer devices. | Select when SMBus infrastructure exists and external sense resistor flexibility is not required. |
| MAX17048 | Maxim standalone fuel gauge (no protection FET drivers); uses ModelGauge™ m3 algorithm; 1.8 V to 4.5 V supply; I²C interface only. | No CC/DC outputs - requires external protection IC; optimized for SoC accuracy over safety enforcement; lower quiescent current (18 µA active). | Select when primary need is high-accuracy fuel gauging and protection is handled separately. |
Compared with BQ20Z75-V160 and MAX17048, DS2760BE+T&R uniquely combines hardware-enforced Li⁺ safety (CC/DC FET control), 1-Wire simplicity, and zero-volt recovery in a single TSSOP package - making it optimal for cost-sensitive, space-constrained battery packs where integrated protection and minimal host interface overhead are critical.
Availability
DS2760BE+T&R is available at Aetrix Electronics and suitable for smartphone battery packs, power tool modules, medical portable devices, and wearable health monitors requiring stable component supply and long-term lifecycle support.
Supply support for DS2760BE+T&R includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for industrial, automotive, and consumer applications.
The DS2760BE+T&R belongs to Maxim's battery management IC product line, engineered specifically for cost-effective, high-reliability Li⁺ battery pack safety monitoring and data acquisition in portable electronics.
FAQ
What is the overvoltage protection threshold for DS2760BE+T&R?
The DS2760BE+T&R has a factory-programmed overvoltage threshold of 4.35 V (VOV), which triggers immediate disablement of the CC output to protect Li⁺ cells from overcharge. This value distinguishes it from the DS2760AE+T&R variant (4.275 V) and is confirmed in Maxim's ordering information table and protection register description. The DS2760BE+T&R maintains this threshold across temperature and supply variations per its internal voltage reference design.
Does DS2760BE+T&R support external current sense resistors?
Yes, DS2760BE+T&R is configured for external sense resistor use, as indicated by its "B" suffix and ordering code DS2760BE+. It accepts user-selected resistors connected between VSS and SNS, with current measurement resolution of 15.625 µV and ±64 mV dynamic range. The internal 25 mΩ resistor option is reserved for DS2760BE+025 variants - DS2760BE+T&R requires external sensing per its datasheet pin configuration and functional description.
How does DS2760BE+T&R enable zero-volt battery recovery?
DS2760BE+T&R implements zero-volt recovery by enabling a current-limited path from the PLS pin to VDD when VDD falls below 3 V (typical). This gently charges deeply depleted cells (<0.5 V) without triggering protection circuits. The feature activates automatically in Sleep Mode upon detection of low VDD and is documented in the Undervoltage section and Figure 3 waveforms. DS2760BE+T&R's PLS-to-VDD recovery path is hardware-controlled and does not require host intervention.
What memory resources are available on DS2760BE+T&R?
DS2760BE+T&R integrates 32 bytes of lockable EEPROM (addresses 20h–3Fh), 16 bytes of general-purpose SRAM (80h–8Fh), and 32 bytes of register space (00h–1Fh) for protection, status, voltage, current, and temperature data. EEPROM blocks can be permanently locked to prevent modification of critical battery parameters. All memory is accessed via 1-Wire commands, and the DS2760BE+T&R supports shadow RAM for verified writes before EEPROM commit.
Is DS2760BE+T&R compatible with other 1-Wire battery monitors in multi-pack systems?
Yes, DS2760BE+T&R supports multi-battery operation through its factory-programmed unique 64-bit 1-Wire address (family code 30h), allowing individual addressing on a shared bus. Each DS2760BE+T&R responds only to commands containing its full address, enabling simultaneous monitoring of multiple battery packs by a single host controller - a capability explicitly stated in the DESCRIPTION and 1-Wire Bus System sections of the datasheet.
DS2760BE+T&R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Battery Monitor
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- -
- Fault Protection:
- Over Current, Over/Under Voltage, Short Circuit
- Interface:
- 1-Wire
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
DS2760BE+T&R FAQ
1.How can I place an order for DS2760BE+T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for DS2760BE+T&R on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS2760BE+T&R reliable?
The price and inventory of DS2760BE+T&R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS2760BE+T&R is usually 5 days.
3.What payment methods are accepted for DS2760BE+T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS2760BE+T&R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS2760BE+T&R?
DS2760BE+T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS2760BE+T&R order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS2760BE+T&R?
For technical support, including DS2760BE+T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS2760BE+T&R requirements.
6.How does Aetrix verify that DS2760BE+T&R is sourced from the original manufacturer or authorized distributors?
All DS2760BE+T&R products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS2760BE+T&R meets industry standards.
7.What is the process for return or replacement of DS2760BE+T&R?
All DS2760BE+T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS2760BE+T&R, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS2760BE+T&R part is unused and in its original packaging.
Return procedure for DS2760BE+T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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