Texas Instruments BQ29716DSER

Overview

BQ29716DSER from Texas Instruments is a single-cell Li-ion/Li-polymer battery protection IC that integrates overvoltage (4.425 V), undervoltage (2.300 V), charge/discharge overcurrent (–0.100 V / 0.165 V), and short-circuit (0.5 V) detection with factory-programmed thresholds, ±5 mV OCP sensing accuracy, and 8 µA typical quiescent current in NORMAL mode. It drives external CHG/DSG FETs for cell-level safety in portable power systems.

For engineers reviewing the BQ29716DSER datasheet, BQ29716DSER pinout, BQ29716DSER application, or BQ29716DSER equivalent, this device delivers precision voltage/current fault monitoring with zero-voltage charging support, ultra-low-power operation (100 nA shutdown), and WSON-6 packaging optimized for space-constrained battery packs in mobile handsets and handheld data terminals.

Technical Context

The BQ29716DSER implements analog comparator-based fault detection across BAT–VSS (OVP/UVP), V––VSS (OCD/SCP), and VSS–V– (OCC), with fixed internal timers for delay and recovery. Its differential sensing architecture enables ±5 mV typical accuracy for discharge overcurrent detection independent of temperature drift.

Operation is managed via two low-power states: NORMAL mode (4 µA ICC) for active monitoring and Shutdown mode (100 nA IQ) for storage. All protection thresholds-including 4.425 V OVP, 2.300 V UVP, –0.100 V OCC, 0.165 V OCD, and 0.5 V SCD-are factory-programmed and non-adjustable, ensuring consistent behavior across production units.

Key Specifications

Pinout & Package

Package: 6-pin WSON (DSE), 1.50 mm × 1.50 mm × 0.75 mm body size, wettable flank compatible, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar battery protection applications.

Compared with BQ29716DSER, BQ29717DSER raises UVP to 2.500 V for conservative discharge control, while BQ29718DSER lowers OCD to 0.100 V for finer current discrimination-both retain identical 4.425 V OVP and 0.5 V SCD, making them drop-in alternatives only when matching the respective UVP/OCD target values.

Availability

BQ29716DSER is available at Aetrix Electronics and suitable for mobile handsets, handheld data terminals, and tablet PCs requiring stable component supply, long-term lifecycle support, and TI-qualified battery safety assurance.

Supply support for BQ29716DSER 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 expertise in battery management systems.

The BQ297xx family is designed specifically for cost-sensitive, space-constrained single-cell Li-ion/Li-polymer battery packs in consumer electronics, delivering integrated voltage/current protection with minimal external components.

FAQ

What protection functions does the BQ29716DSER provide?

The BQ29716DSER provides overvoltage protection (4.425 V), undervoltage protection (2.300 V), charge overcurrent protection (–0.100 V), discharge overcurrent protection (0.165 V), and short-circuit protection (0.5 V). Each function uses dedicated comparators and factory-programmed thresholds with fixed delay timers. The BQ29716DSER executes these protections autonomously without MCU intervention, driving external CHG and DSG FETs to isolate the cell during fault conditions.

Is the BQ29716DSER pin-compatible with other BQ297xx variants?

Yes, the BQ29716DSER shares identical 6-pin WSON (DSE) packaging and pinout with all BQ297xx family members, including BQ29717DSER and BQ29718DSER. Pin assignments for BAT, COUT, DOUT, VSS, V–, and NC are standardized across the series, enabling direct PCB reuse when substituting between variants with matching protection thresholds.

Does the BQ29716DSER support zero-voltage charging?

Yes, the BQ29716DSER supports zero-voltage charging: it allows charging of fully depleted cells when the charger voltage applied to the BAT pin exceeds 1.7 V. This feature prevents lithium plating by enabling controlled pre-charge before normal CC/CV charging resumes. The BQ29716DSER enforces this behavior via internal logic that overrides UVP shutdown until the cell reaches a recoverable voltage level.

What is the operating current consumption of the BQ29716DSER?

The BQ29716DSER draws 4 µA typical current in NORMAL mode (TA = 25°C, BAT = 3.8 V) and reduces to 100 nA in Shutdown mode. These values are measured at the BAT pin and reflect total device supply current, including internal reference, comparators, and gate drivers. The BQ29716DSER maintains full protection functionality in NORMAL mode, making it suitable for always-on battery monitoring in portable equipment.

How is overcurrent detection implemented in the BQ29716DSER?

The BQ29716DSER implements overcurrent detection using differential voltage sensing across external FETs: discharge overcurrent (OCD) is measured between V– and VSS pins (0.165 V threshold), while charge overcurrent (OCC) is measured between VSS and V– pins (–0.100 V threshold). Sensing accuracy is ±5 mV typical, validated across –40°C to +85°C. The BQ29716DSER uses this analog front-end to trigger fixed-delay timers before asserting COUT or DOUT to disable the respective FET.