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Analog Devices Inc./Maxim Integrated DS2762AE+T&R
- Part No.:
- DS2762AE+T&R
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DS2762AE+T&R.pdf
- Description:
- IC BATT MONITOR LI-ION 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,480
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Product details
Overview
DS2762AE+T&R from Maxim Integrated is a high-precision Li+ battery monitor IC integrating bidirectional current measurement (0.625mA LSB, ±1.9A range), 4.88mV-resolution voltage sensing, and 0.125°C-resolution temperature monitoring - all within a 16-pin TSSOP package. It delivers safety protection (overvoltage/undervoltage/overcurrent), nonvolatile EEPROM storage, and 1-Wire® interface for remaining capacity estimation in portable Li+ battery packs.
For engineers reviewing the DS2762AE+T&R datasheet, DS2762AE+T&R pinout, DS2762AE+T&R application, or DS2762AE+T&R equivalent, this page provides verified technical context, real-world design meanings of key specs, validated pin functions, and two confirmed alternative parts with documented functional differences for battery pack safety and fuel-gauge system design.
Technical Context
The DS2762AE+T&R implements a dedicated analog front-end with dual-path current sensing (IS1/IS2 differential input) and on-chip thermal sensor, feeding a 12-bit ADC that updates current every 88ms, voltage every 3.4ms, and temperature every 220ms. Its protection logic executes autonomous FET control via CC (charge control) and DC (discharge control) outputs based on user-programmable thresholds and fixed delays (e.g., 1s overvoltage delay, 100ms undervoltage delay).
It uses Dallas Semiconductor's 1-Wire® interface (64-bit unique address, tSLOT = 60–120µs) for host communication, supports both internal 25mΩ sense resistor and external resistor configurations, and includes lockable EEPROM (25,000 write cycles, 4-year data retention at +70°C) plus 16 bytes of SRAM for volatile alarm thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Resolution | 0.625mA LSB (internal sense); enables precise charge/discharge tracking down to sub-mA levels for accurate coulomb counting |
| Voltage Resolution | 4.88mV (0–4.75V range); supports ±1LSB offset error for reliable cell voltage monitoring across Li+ operating range |
| Temperature Resolution | 0.125°C (–40°C to +85°C operating range); sufficient for thermal runaway detection and state-of-charge compensation |
| Protection Response Delay | tOVD = 1s, tUVD = 100ms, tOCD = 10ms; balances fast fault response with noise immunity in portable power systems |
| 1-Wire Interface | Single-conductor, open-drain, 64-bit unique address; allows daisy-chaining multiple battery monitors without additional address lines |
| Active Current | 60µA typical (90µA max); ensures minimal self-discharge impact during active fuel-gauge operation |
| Sleep Current | 1µA typical (2µA max); critical for long-term shelf life and low-power standby in disconnected battery packs |
Pinout & Package
DS2762AE+T&R is housed in a 16-pin Thin Shrink Small Outline Package (TSSOP), 5.0mm × 4.4mm × 1.2mm body, lead pitch 0.65mm, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC | Charge Protection Control Output | Open-drain P-channel FET gate driver; asserts high to disable charging when overvoltage or overcurrent is detected |
| DC | Discharge Protection Control Output | Open-drain P-channel FET gate driver; asserts high to disable discharging during undervoltage, overcurrent, or short-circuit events |
| DQ | 1-Wire Data I/O | Single-wire bidirectional interface with 1µA internal pulldown; enables host read/write access to registers and memory without separate clock line |
| IS1 / IS2 | Differential Current Sense Inputs | Accept filtered voltage drop across sense resistor; polarity determines charge (+) vs. discharge (–) direction for bidirectional accumulation |
| PIO | Programmable I/O / Alert Output | Configurable as interrupt output (active-low) to signal host when accumulated current or temperature exceeds user-set thresholds |
| PS | Power Switch Sense Input | Pulled up to VDD via 1µA source; detects mechanical switch closure to wake device from sleep mode and enable system power |
| SNS | Sense Resistor Connection | Common node for internal 25mΩ resistor (to VSS) or external resistor; carries full-pack current path for precision measurement |
| VIN | Battery Voltage Sense Input | High-impedance input (5MΩ) monitoring cell voltage; weak internal pullup ensures valid reading even with open-circuit conditions |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Li+ Safety Circuitry | Autonomous overvoltage (4.35V typ), undervoltage (2.6V typ), overcurrent (1.9A typ), and short-circuit (8A typ) protection with fixed timing delays |
| 0V Battery Recovery Charge | Internal current-limited (1mA typ) path from PLS to VDD enables safe reactivation of deeply depleted cells below 2.2V |
| Two Sense Resistor Options | Factory-configured internal 25mΩ resistor (±1.9A range) or external resistor support (±64mV range), enabling design flexibility without hardware change |
| Lockable EEPROM Storage | 32 bytes of NV memory with lock capability; preserves critical battery parameters (cycle count, manufacturing date, calibration data) across deep discharge |
| Host-Alertable Thresholds | SRAM-based high/low interrupt thresholds for accumulated current and temperature; allows dynamic host-triggered safety responses without firmware update |
Applications
| Smartphone Battery Pack | Digital Camera Power Module |
|---|---|
Use Scenario: Real-time monitoring of Li-ion cell voltage, temperature, and bidirectional current during capture, playback, and USB charging. IC Role / Device Role / Timing Role: Primary fuel gauge and safety supervisor; performs 3.4ms voltage sampling, 88ms current integration, and 220ms thermal reads to feed host SoC battery algorithms. Use Value: Enables accurate remaining capacity estimation (<±5% error) and prevents thermal runaway by triggering DC shutdown at 85°C. |
Use Scenario: Managing dual-cell Li-ion pack during high-current burst discharge (flash, zoom motor) and trickle recharge. IC Role / Device Role / Timing Role: Standalone protection controller interfacing with camera MCU via 1-Wire; autonomously disables discharge FET if >8A short-circuit current is detected within 240µs. Use Value: Eliminates need for external comparator circuits and reduces BOM count by integrating sensing, logic, and FET drive into one TSSOP device. |
| Tablet PC Secondary Battery | Medical Handheld Diagnostic Device |
Use Scenario: Supporting hot-swap battery operation with seamless capacity handoff between primary and secondary packs. IC Role / Device Role / Timing Role: Unique 64-bit 1-Wire address enables individual addressing of multiple DS2762AE+T&R units on shared bus; supports multibattery arbitration. Use Value: Allows tablet OS to distinguish and calibrate each pack independently, improving runtime prediction accuracy across mixed-age batteries. |
Use Scenario: Ensuring fail-safe power delivery in battery-powered ECG and pulse oximetry devices requiring FDA-compliant safety logs. IC Role / Device Role / Timing Role: Stores calibrated temperature coefficients and cycle history in lockable EEPROM; immune to data loss during accidental short or ESD event. Use Value: Meets IEC 62304 traceability requirements by preserving immutable battery health records across 10+ years of field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Li+ battery monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ27426YZFT | TI device uses I²C interface (not 1-Wire), integrates gas gauging algorithm in ROM, no internal sense resistor | Requires host processor with I²C stack; better for embedded firmware-driven gauging but lacks autonomous protection outputs like CC/DC | Select when system already uses I²C and needs higher-level state-of-charge modeling; not drop-in for 1-Wire or FET-control architectures |
| MAX17048G+T | Maxim part with ModelGauge™ m3 algorithm, 1.8V–4.5V supply, no integrated protection FET drivers (CC/DC) | Relies on external protection IC; optimized for ultra-low quiescent current (0.5µA sleep) but adds system complexity | Choose for longest shelf life in IoT sensors; avoid when autonomous overvoltage/overcurrent shutdown is required without external logic |
Compared with DS2762AE+T&R, BQ27426YZFT shifts intelligence to the host via I²C and removes hardware protection outputs, while MAX17048G+T trades autonomous safety circuitry for lower sleep current and advanced fuel-gauge computation - making DS2762AE+T&R uniquely suited for cost-sensitive, self-contained Li+ pack safety with minimal host dependency.
Availability
DS2762AE+T&R is available at Aetrix Electronics and suitable for smartphone battery packs, digital camera power modules, tablet secondary batteries, and medical handheld diagnostic devices requiring stable component supply, long-term lifecycle support, and guaranteed authentic sourcing.
Supply support for DS2762AE+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 demanding industrial, automotive, and portable applications.
The DS2762AE+T&R belongs to Maxim's battery fuel gauge and protection product line, engineered specifically for cost-sensitive, space-constrained single-cell and multi-cell Li+ battery packs requiring integrated measurement, storage, and autonomous safety response.
FAQ
What is the operating temperature range for DS2762AE+T&R?
The DS2762AE+T&R operates from –40°C to +85°C, matching the extended thermal envelope of Li+ battery packs in consumer and industrial environments. This range is validated per Absolute Maximum Ratings and Recommended DC Operating Conditions in the official datasheet, ensuring reliable voltage, current, and temperature measurement performance across the full span without calibration drift beyond specified error bands.
Does DS2762AE+T&R include an internal current-sense resistor?
Yes, DS2762AE+T&R is configured with an internal 25mΩ current-sense resistor, delivering 0.625mA LSB resolution and ±1.9A dynamic range. This eliminates external resistor placement and layout sensitivity, simplifying PCB design while maintaining factory-trimmed accuracy - confirmed in the "FEATURES" and "CURRENT MEASUREMENT" sections of the datasheet.
How does DS2762AE+T&R communicate with the host system?
DS2762AE+T&R uses the Dallas 1-Wire® interface on the DQ pin, supporting half-duplex, single-conductor communication with a unique 64-bit device address. This allows multiple DS2762AE+T&R units on one bus without address conflicts and requires only pull-up resistor and microcontroller GPIO - no dedicated UART or I²C peripheral needed.
What protection functions does DS2762AE+T&R provide autonomously?
DS2762AE+T&R autonomously executes overvoltage (4.35V typ), undervoltage (2.6V typ), overcurrent (1.9A typ), and short-circuit (8A typ) protection using its CC and DC outputs to directly control external P-channel FETs. All thresholds and delays (e.g., 1s overvoltage delay) are hard-coded in silicon and require no host intervention to activate.
Is DS2762AE+T&R pin-compatible with other DS2762 variants like DS2762BE+?
No, DS2762AE+T&R and DS2762BE+ are not pin-compatible: DS2762AE+T&R is rated for –40°C to +85°C operation, while DS2762BE+ is specified for –20°C to +70°C and uses different overvoltage threshold trimming. Their TSSOP packages share footprint but differ in internal calibration and thermal specification - substitution requires validation of protection thresholds and timing behavior across the target temperature range.
DS2762AE+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:
- Active
- 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
DS2762AE+T&R FAQ
1.How can I place an order for DS2762AE+T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for DS2762AE+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 DS2762AE+T&R reliable?
The price and inventory of DS2762AE+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 DS2762AE+T&R is usually 5 days.
3.What payment methods are accepted for DS2762AE+T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS2762AE+T&R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS2762AE+T&R?
DS2762AE+T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS2762AE+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 DS2762AE+T&R?
For technical support, including DS2762AE+T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS2762AE+T&R requirements.
6.How does Aetrix verify that DS2762AE+T&R is sourced from the original manufacturer or authorized distributors?
All DS2762AE+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 DS2762AE+T&R meets industry standards.
7.What is the process for return or replacement of DS2762AE+T&R?
All DS2762AE+T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS2762AE+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 DS2762AE+T&R part is unused and in its original packaging.
Return procedure for DS2762AE+T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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