Analog Devices Inc./Maxim Integrated DS2760AE-025/T&R

Overview

DS2760AE-025/T&R from Maxim Integrated is a high-precision Li+ battery monitor IC with integrated 25mΩ internal sense resistor, 12-bit bidirectional current measurement (±1.9A range, 0.625mA LSB), 4.88mV voltage resolution, and 0.125°C temperature resolution via on-chip sensor. It delivers overvoltage (4.275V), undervoltage, and overcurrent/short-circuit protection for single-cell lithium-ion packs in portable medical devices and power tools.

For engineers reviewing the DS2760AE-025/T&R datasheet, DS2760AE-025/T&R pinout, DS2760AE-025/T&R application, or DS2760AE-025/T&R equivalent, key selection criteria include its TSSOP-16 package, 1-Wire interface with unique 64-bit address, zero-volt recovery charge path, lockable EEPROM for secure battery data storage, and dual FET control outputs (CC/DC) for external p-channel protection switches.

Technical Context

The DS2760AE-025/T&R implements a dedicated analog front-end with dual current-sense inputs (IS1/IS2), voltage sense input (VIN), and thermal sensing via integrated silicon diode. Its 12-bit ADC digitizes current as signed two's-complement values every 88ms using 128-sample averaging, with automatic offset compensation across temperature and supply voltage.

Protection logic executes in hardware: overvoltage triggers CC high after tOVD delay (4.275V threshold), undervoltage forces CC/DC high and Sleep Mode entry (2.5V threshold), while short-circuit detection uses raw SNS pin voltage (not filtered IS1/IS2) with tSCD delay. All protection flags (OV/UV/COC/DOC) are latched and require host reset via 1-Wire command.

Key Specifications

Pinout & Package

DS2760AE-025/T&R is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch) with exposed thermal pad. Pin functions are validated per Maxim's official mechanical drawing 16tssop.pdf and DS2760 datasheet Rev. 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Li+ battery monitoring applications.

Compared with BQ27426YZFT and MAX17048G+T, DS2760AE-025/T&R uniquely combines hardware-enforced Li+ protection (CC/DC outputs), zero-volt recovery, and 1-Wire addressability in one TSSOP package-reducing system-level complexity for cost-sensitive, safety-critical battery packs.

Availability

DS2760AE-025/T&R is available at Aetrix Electronics and suitable for smart power tools, portable medical devices, wearable fitness trackers, and industrial handheld scanners requiring stable component supply and long-term lifecycle support.

Supply support for DS2760AE-025/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, medical, and consumer applications.

The DS2760 product line delivers integrated Li+ battery monitoring and protection for cost-sensitive, space-constrained battery packs-emphasizing autonomous safety response, secure data storage, and minimal external component count.

FAQ

What is the overvoltage protection threshold for DS2760AE-025/T&R?

The DS2760AE-025/T&R has a factory-trimmed overvoltage threshold of 4.275V, with a typical overvoltage delay (tOVD) of 1.2 seconds. This threshold is fixed for the 'AE' variant and cannot be adjusted via software or external components. The DS2760AE-025/T&R asserts its CC output high to disable charging when VIN exceeds this value for longer than tOVD, and releases protection when cell voltage falls below the charge-enable threshold (VCE = 4.125V). This ensures compliance with standard Li+ cell charging profiles.

Does DS2760AE-025/T&R support zero-volt battery recovery?

Yes, DS2760AE-025/T&R provides hardware-based zero-volt recovery through its PLS-to-VDD current-limited path. When VDD drops below 2.2V (indicating deep discharge), the DS2760AE-025/T&R automatically enables a regulated recovery charge current (IRC) from PLS to VDD. This feature reactivates severely depleted cells without host MCU intervention, allowing the pack to reach 3.0V before resuming normal operation - a capability not present in most standalone fuel gauges like the MAX17048.

How does DS2760AE-025/T&R handle short-circuit detection?

DS2760AE-025/T&R detects short circuits by monitoring raw voltage on the SNS pin (not the filtered IS1/IS2 differential pair), triggering DC high within tSCD (typically 10ms) when VSNS exceeds VSC (150mV). This direct SNS sensing enables faster response than filtered current measurement. The DS2760AE-025/T&R then applies a test current (ITST) from VDD to PLS to verify short removal before re-enabling discharge - a robust sequence absent in basic current-monitoring ICs.

What memory types are integrated into DS2760AE-025/T&R?

DS2760AE-025/T&R integrates three memory types: 32 bytes of lockable EEPROM (addresses 20h–3Fh), 16 bytes of general-purpose SRAM (80h–8Fh), and volatile register space (00h–1Fh). The lockable EEPROM allows permanent storage of calibrated protection thresholds (e.g., VOV, VUV) and device-specific data; once locked, it becomes ROM. SRAM provides temporary runtime storage, while instrumentation registers hold real-time voltage, current, temperature, and accumulated charge values accessible via 1-Wire.

Can DS2760AE-025/T&R operate with an external sense resistor?

No, DS2760AE-025/T&R is specifically configured with an internal 25mΩ sense resistor, as indicated by the '-025' suffix in its part number. It is not compatible with external sense resistors. For external sense resistor variants, refer to DS2760AE+/DS2760BE+ parts. Attempting to connect an external resistor to DS2760AE-025/T&R will cause incorrect current scaling and invalid protection thresholds, as its ADC gain and register interpretation are hard-coded for the internal 25mΩ element.