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Analog Devices Inc./Maxim Integrated DS2764AE+
- Part No.:
- DS2764AE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DS2764AE+.pdf
- Description:
- IC BATT MONITOR LI-ION 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:530
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Product details
Overview
DS2764AE+ from Maxim Integrated is a high-precision Li+ battery monitor IC integrating bidirectional current sensing (0.625mA LSB, ±1.9A range), 4.88mV voltage resolution, 0.125°C temperature resolution, 40-byte lockable EEPROM, and Li+ protection circuitry (overvoltage/undervoltage/overcurrent) in a 16-pin TSSOP package. It serves as the core safety and data-acquisition unit in smart battery packs for portable electronics requiring accurate remaining capacity estimation and autonomous fault response.
For engineers reviewing the DS2764AE+ datasheet, DS2764AE+ pinout, DS2764AE+ application, or DS2764AE+ equivalent, this page delivers verified technical context, real-world design meanings of key specs, validated pin functions, confirmed alternative parts with functional distinctions, and supply-ready availability details - all grounded in Maxim's official DS2764 specification.
Technical Context
The DS2764AE+ implements a dual-path measurement architecture: analog front-end with integrated 25mΩ sense resistor (or external resistor interface) feeds a 12-bit signed ADC for current, while separate dedicated paths handle 10-bit voltage and on-die temperature sensing. All measurements are synchronized to an internal timebase with ±6.5% accuracy over -20°C to +70°C.
Its protection logic executes autonomous state transitions using hardwired thresholds - e.g., overvoltage detection at 4.350V (typ) with 1s delay triggers CC output high, while undervoltage at 2.6V (typ) with 100ms delay asserts both CC and DC high and forces sleep mode. The 2-wire interface supports field-programmable 7-bit slave address and operates up to 100kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Resolution | 0.625mA LSB (internal sense) - enables precise charge/discharge tracking down to microcoulomb-level accumulation error per sample |
| Voltage Resolution | 4.88mV - resolves 0.1% of full-scale 4.75V cell voltage, critical for accurate state-of-charge interpolation |
| Temperature Resolution | 0.125°C - supports thermal runaway detection with <1°C granularity across -40°C to +85°C operating range |
| Protection Threshold Accuracy | Overvoltage detect: 4.350V ±25mV (typ) - ensures safe Li+ charging without premature cutoff or overcharge risk |
| Active Current Consumption | 60μA typ - allows continuous monitoring for >1 year on typical 100mAh backup battery without significant drain |
| EEPROM Capacity | 40 bytes, partitioned into two 16-byte blocks + one 8-byte block - stores calibrated parameters, cycle count, and manufacturer data with permanent lock capability |
| 2-Wire Interface Speed | 100kHz max clock - compatible with standard I²C controllers without timing margin concerns in battery management systems |
Pinout & Package
DS2764AE+ is housed in a RoHS-compliant 16-pin Thin Shrink Small Outline Package (TSSOP) with 0.65mm pitch and exposed thermal pad (not electrically connected). Package dimensions: 5.0mm × 4.4mm × 1.2mm.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CC) | Charge Protection Control Output | Open-drain P-channel FET gate driver; asserts high to disable charging during overvoltage or overcurrent events |
| 2 (PLS) | Battery Pack Positive Terminal Input | Monitors pack voltage for charger detection; provides recovery path from PLS to VDD for 0V battery charging |
| 3 (DC) | Discharge Protection Control Output | Open-drain P-channel FET gate driver; asserts high to disable discharging during undervoltage, short-circuit, or discharge overcurrent |
| 4–6 (SNS) | Sense Resistor Connection | Low-impedance node tied to battery negative; internal 25mΩ resistor connects between VSS and SNS in default configuration |
| 7 (PS) | Power Switch Sense Input | Pulled up to VDD via 1μA current source; host system pulls low to wake device from sleep and enable power delivery |
| 8 (IS2), 9 (IS1) | Current-Sense Differential Inputs | Measure voltage drop across sense resistor (VIS = VIS1 − VIS2); internal 4.7kΩ resistors form low-pass filter with 0.1μF capacitor |
| 10 (SDA) | 2-Wire Serial Data I/O | Open-drain bidirectional line with internal 1μA pulldown; supports multi-drop bus with programmable 7-bit slave address |
| 11–13 (VSS) | Device Ground | Must connect directly to Li+ cell negative terminal; serves as reference for all analog measurements and protection thresholds |
| 14 (SCL) | 2-Wire Serial Clock Input | Input-only clock line with internal 1μA pulldown; defines I²C timing; bus low >2.1s triggers automatic sleep entry |
| 15 (VDD) | Power-Supply Input | Accepts 2.5V–5.5V from Li+ cell positive; powers internal circuitry and enables protection FET biasing |
| 16 (VIN) | Voltage Sense Input | High-impedance (5MΩ) input referenced to VSS; monitors cell voltage with 4.88mV resolution and ±5% gain error |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25mΩ Sense Resistor | Eliminates external component count and layout sensitivity; factory-trimmed to ±20% tolerance with on-chip temperature compensation |
| 0V Battery Recovery Charge Path | Enables safe charging of deeply depleted cells (<2.2V) by sourcing current from PLS to VDD, bypassing undervoltage lockout |
| Lockable EEPROM Blocks | Two 16-byte and one 8-byte EEPROM segments can be permanently write-protected to secure calibration data and serial numbers |
| Autonomous Protection Logic | Hardware-based response to overvoltage, undervoltage, overcurrent, and short-circuit events - no host intervention required for safety enforcement |
| Soft Startup on Wake | Gradually turns on discharge FET when exiting sleep mode to limit inrush current into unpowered host systems |
Applications
| Smartphone Battery Packs | Digital Camera Power Modules |
|---|---|
Use Scenario: Real-time monitoring of Li-ion cell voltage, temperature, and charge/discharge current during active use and standby. IC Role / Device Role / Timing Role: Primary battery gauge and protector; performs 3.4ms voltage updates, 220ms temperature reads, and 88ms current sampling to feed host fuel-gauge algorithm. Use Value: Enables accurate remaining capacity reporting within ±5% error and prevents thermal runaway via immediate short-circuit shutdown (<240μs). |
Use Scenario: Managing burst-mode power delivery during flash charging and high-current image capture sequences. IC Role / Device Role / Timing Role: Safety supervisor and data logger; accumulates current in 0.25mAhr steps to track cycle life and logs temperature excursions to EEPROM. Use Value: Extends battery service life by enforcing 2.6V undervoltage cutoff and 4.35V overvoltage limit, while storing usage history for predictive maintenance. |
| PDA Energy Management Systems | Portable Medical Device Batteries |
Use Scenario: Supporting hot-swap battery replacement and maintaining runtime estimates during intermittent connectivity. IC Role / Device Role / Timing Role: Dual-role monitor and protector; uses PS pin wake-up to re-enable power after battery insertion and maintains accumulated current across sleep cycles. Use Value: Guarantees uninterrupted operation by recovering from 0V state and retaining 40 bytes of calibrated parameters through deep discharge events. |
Use Scenario: Ensuring fail-safe power behavior in life-critical devices where battery faults must trigger immediate shutdown. IC Role / Device Role / Timing Role: Hardware-enforced safety layer; asserts CC/DC outputs within 100ms of undervoltage detection to isolate cell before system brownout. Use Value: Meets IEC 62368-1 requirements via deterministic protection timing (tUVD = 100ms typ) and lockable EEPROM for audit-trail data storage. |
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 | Higher integration: includes coulomb counter, chem-id auto-recognition, and TI Impedance Track™ algorithm; requires external sense resistor only | Targets higher-end portable devices needing adaptive fuel gauging; lacks integrated sense resistor and 0V recovery path | Choose BQ27426YZFT when advanced state-of-charge modeling is required and external sense resistor layout is acceptable |
| MAX17048G+T | Lower power: 22μA active current vs. DS2764AE+'s 60μA; uses ModelGauge m3 algorithm; no hardware protection outputs (CC/DC) | Designed for host-controlled protection; relies on MCU to act on alerts rather than autonomous FET control | Choose MAX17048G+T when system-level software safety is preferred and autonomous hardware protection is not mandated |
Compared with BQ27426YZFT and MAX17048G+T, the DS2764AE+ uniquely combines autonomous hardware protection outputs (CC/DC), integrated sense resistor, and 0V recovery in a cost-optimized TSSOP package - making it optimal for cost-sensitive, safety-critical battery packs where minimal BOM and deterministic fault response are mandatory.
Availability
DS2764AE+ is available at Aetrix Electronics and suitable for smartphone battery packs, digital camera power modules, PDA energy management systems, and portable medical device batteries requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for DS2764AE+ 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, communications, and consumer applications - with emphasis on reliability, integration, and low-power operation.
The DS2764AE+ belongs to Maxim's battery fuel gauge and protection product line, engineered specifically for cost-sensitive, space-constrained Li+ battery packs needing autonomous safety enforcement and high-accuracy parametric monitoring without host processor dependency.
FAQ
What is the primary function of the DS2764AE+ in a battery management system?
The DS2764AE+ serves as a self-contained Li+ battery monitor and protector. It performs precision voltage, current, and temperature measurements; accumulates net charge flow; stores battery-specific data in lockable EEPROM; and autonomously controls external FETs via CC and DC outputs to enforce overvoltage, undervoltage, overcurrent, and short-circuit protection - all without host intervention. Its role in the DS2764AE+ system is to ensure safety, extend battery life, and provide reliable telemetry for fuel gauging algorithms.
Does the DS2764AE+ support both internal and external current-sense resistor configurations?
Yes, the DS2764AE+ supports two configurations: internal 25mΩ sense resistor (factory-trimmed, temperature-compensated) and external user-selectable resistor. In internal mode, current is reported in amps with 0.625mA LSB and ±1.9A range; in external mode, the device measures voltage drop across the external resistor with 15.625μV LSB and ±64mV range. Pin connections (SNS, IS1, IS2) and register interpretation differ between modes, and configuration is fixed at manufacturing - the DS2764AE+ variant uses the internal sense resistor.
How does the DS2764AE+ handle a completely discharged (0V) battery?
The DS2764AE+ implements a dedicated 0V battery recovery charge path from PLS to VDD. When VIN falls below 2.2V, the device enters sleep mode but maintains internal circuitry powered via current sourced from PLS. Once a charger is connected and PLS rises above VDD, the DS2764AE+ wakes and enables controlled charging to bring the cell above 3.0V, at which point normal monitoring resumes. This feature ensures the DS2764AE+ remains functional and can initiate recovery even when the battery is fully depleted.
What protection features are implemented in hardware versus firmware in the DS2764AE+?
All core protection functions in the DS2764AE+ - overvoltage, undervoltage, overcurrent (charge/discharge), and short-circuit detection - are implemented in analog hardware with fixed thresholds and deterministic delays (e.g., tOVD = 1s typ, tUVD = 100ms typ). No firmware or host interaction is required for assertion of CC or DC outputs. The DS2764AE+ does not rely on programmable logic or stored code for safety enforcement, ensuring fail-safe behavior independent of software integrity or communication status.
Can the DS2764AE+ EEPROM be used to store custom calibration data?
Yes, the DS2764AE+ provides 40 bytes of lockable EEPROM, partitioned into two 16-byte blocks and one 8-byte block, all accessible via the 2-wire interface. Users may write calibration coefficients, manufacturing date, cycle count, or unique identifiers to these locations. Each block can be permanently locked (write-protected) to prevent accidental overwrite - a critical capability for securing calibration data that directly impacts DS2764AE+ measurement accuracy and regulatory compliance.
DS2764AE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- -
- Fault Protection:
- Over Current, Over/Under Voltage, Short Circuit
- Interface:
- I2C
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
DS2764AE+ FAQ
1.How can I place an order for DS2764AE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS2764AE+ 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 DS2764AE+ reliable?
The price and inventory of DS2764AE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS2764AE+ is usually 5 days.
3.What payment methods are accepted for DS2764AE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS2764AE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS2764AE+?
DS2764AE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS2764AE+ 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 DS2764AE+?
For technical support, including DS2764AE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS2764AE+ requirements.
6.How does Aetrix verify that DS2764AE+ is sourced from the original manufacturer or authorized distributors?
All DS2764AE+ 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 DS2764AE+ meets industry standards.
7.What is the process for return or replacement of DS2764AE+?
All DS2764AE+ units undergo pre-shipment inspection (PSI). If there is an issue with DS2764AE+, 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 DS2764AE+ part is unused and in its original packaging.
Return procedure for DS2764AE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS2764AE+ Tags
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S-8241ABKMC-GBKT2G
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S-8241ABPMC-GBPT2G
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BQ27426YZFR
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STC3117IJT
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NPM1100-QDAA-R
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S-8252AAL-M6T1U
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