Texas Instruments BQ76907RGRR

Overview

BQ76907RGRR from Texas Instruments is a high-accuracy battery monitor and protector IC for 2- to 7-series Li-ion, Li-polymer, LiFePO4, and LTO battery packs. It integrates a 16-bit delta-sigma cell voltage ADC (±4 mV typical accuracy), a 24-bit coulomb counter with ±200 mV sense range, low-side NFET charge/discharge drivers, I²C interface (400 kHz), and programmable 3.3 V LDO - deployed in cordless power tools and industrial battery systems.

For engineers reviewing the BQ76907RGRR datasheet, BQ76907RGRR pinout, BQ76907RGRR application, or BQ76907RGRR equivalent, this page delivers verified technical context, real-world operating modes (NORMAL/SLEEP/DEEPSLEEP), cell balancing control logic, thermal-aware protection thresholds, and validated alternative parts for multi-cell pack design.

Technical Context

The BQ76907RGRR implements dual delta-sigma ADC subsystems: one dedicated to cell voltage measurement (16-bit, 4 mV typical error) and another to current sensing (24-bit coulomb counter, ±200 mV input range, 48-bit accumulated charge register). Its protection architecture uses comparator-based hardware triggers for overvoltage, undervoltage, overtemperature, and overcurrent events - all configurable via OTP or registers.

Power management includes five operational modes: NORMAL (32–175 µA), SLEEP (6 µA), DEEPSLEEP (2.7 µA), SHUTDOWN (<1 µA), and CONFIG_UPDATE. The device supports host-controlled cell balancing across up to seven cells using VC0–VC7 pins, with internal 50 mA per-cell balancing current capability and autonomous recovery options.

Key Specifications

Pinout & Package

20-pin QFN (RGR) package, 3.5 mm × 3.5 mm × 0.9 mm, 0.5 mm pitch, thermally enhanced bottom-pad construction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar battery monitor and protector applications.

Compared with BQ76907RGRR, BQ76908RGRR extends cell count and adds CRC without layout changes, while MAX17853GCM+ trades ADC accuracy and integrated LDO for automotive qualification and daisy-chain scalability - making BQ76907RGRR the most balanced choice for non-automotive 2S–7S industrial packs.

Availability

BQ76907RGRR is available at Aetrix Electronics and suitable for cordless power tools, vacuum cleaners, and non-military drones requiring stable component supply, long-term lifecycle assurance, and production-ready qualification.

Supply support for BQ76907RGRR 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of battery management system expertise.

The BQ76907RGRR belongs to TI's BQ769xx family of highly integrated battery monitors - designed specifically for industrial and professional-grade lithium-based battery packs demanding high accuracy, low quiescent power, and robust hardware protection.

FAQ

What is the maximum supported cell count for the BQ76907RGRR?

The BQ76907RGRR supports battery packs with 2-series to 7-series cells. This is fixed by its internal analog front-end architecture and VC0–VC7 pin mapping - VC0 connects to the bottom cell's negative terminal and VC7 to the top-of-stack node. No firmware or configuration can extend beyond 7 cells; attempting to connect an 8th cell will result in undefined voltage readings and potential protection failures.

Does the BQ76907RGRR include an integrated LDO, and what voltages can it output?

Yes, the BQ76907RGRR includes a programmable LDO accessible via the REGOUT pin. It supports five factory-configurable output voltages: 1.8 V, 2.5 V, 3.0 V, 3.3 V, or 5.0 V. The default setting is 3.3 V. Output accuracy is ±3% over temperature and load, and the LDO draws power from the REGSRC pin, which must be supplied at ≥3.8 V for 3.3 V operation.

How does the BQ76907RGRR handle cell balancing, and is it autonomous?

The BQ76907RGRR supports host-controlled cell balancing via I²C commands, using internal 50 mA per-cell balancing current routed through VC0–VC7 pins. It does not perform fully autonomous balancing - all balancing activation, duration, and cell selection must be initiated by the host MCU. However, it does offer optional autonomous recovery after overvoltage events, where the device can re-enable FETs once conditions normalize without host intervention.

What are the key power modes of the BQ76907RGRR and their typical current consumption?

The BQ76907RGRR operates in five power modes: NORMAL (32–175 µA), SLEEP (6 µA), DEEPSLEEP (2.7 µA), SHUTDOWN (<1 µA), and CONFIG_UPDATE. NORMAL mode runs full voltage/current/temperature measurements and protections; SLEEP performs periodic checks with reduced ADC speed; DEEPSLEEP disables all analog blocks except wakeup sources; SHUTDOWN powers down everything except basic reset circuitry - enabling ultra-low standby drain in stored battery packs.

Can the BQ76907RGRR measure temperature using both internal and external sensors?

Yes, the BQ76907RGRR integrates an internal die temperature sensor and supports external NTC or PTC thermistors via the TS pin. The internal sensor provides junction temperature monitoring for thermal protection and diagnostics, while the TS pin accepts 10 kΩ nominal thermistors (e.g., 103-AT type) for precise pack-level temperature profiling. Both sensors feed into independent ADC channels and can trigger independent overtemperature interrupts.