Texas Instruments BQ29716DSET

Overview

BQ29716DSET from Texas Instruments is a single-cell Li-ion/Li-polymer battery protection IC that provides 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, 8 µA normal-mode current, and WSON-6 (1.5 mm × 1.5 mm) packaging for space-constrained portable power systems.

For engineers reviewing the BQ29716DSET datasheet, BQ29716DSET pinout, BQ29716DSET application, or BQ29716DSET equivalent, this device delivers precision voltage/current fault monitoring with ±10 mV OVP/UVP accuracy at 25°C, integrated FET gate drive outputs (COUT/DOUT), zero-voltage charging support, and operation across –40°C to +85°C - critical for reliable battery safety in handheld electronics.

Technical Context

The BQ29716DSET implements analog comparator-based fault detection with internal reference trimming, using differential sensing across external FETs (V– to VSS) for discharge overcurrent and (VSS to V–) for charge overcurrent. Its fixed-function architecture includes independent timers for fault detection (e.g., 20 ms UVP delay, 8 ms OCD delay) and recovery (8 ms for UVP/OCD), all factory-programmed and non-configurable in-system.

It operates without a host microcontroller, entering Shutdown mode (100 nA) when BAT and V– are both ≤1.5 V, and NORMAL mode (4 µA) otherwise. The device lacks communication interfaces or user-adjustable parameters - all protection thresholds and timing are laser-trimmed during manufacturing per the BQ297xx family specification.

Key Specifications

Pinout & Package

Package: WSON-6 (1.50 mm × 1.50 mm × 0.75 mm), moisture-sensitive level 2, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BQ29716DSET, BQ29717DSET raises UVP by 200 mV for enhanced cell longevity, while BQ29718DSET lowers OCD threshold by 65 mV to improve sensitivity for low-resistance discharge paths - both share identical package, pinout, and OVP/SCD settings.

Availability

BQ29716DSET is available at Aetrix Electronics and suitable for smartphone battery packs, tablet PC power systems, and handheld data terminals requiring stable component supply, long-lifecycle support, and guaranteed factory-programmed protection thresholds.

Supply support for BQ29716DSET 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 and embedded processing technologies, with decades of expertise in battery management and power IC design.

The BQ297xx family was engineered specifically for cost-sensitive, space-constrained single-cell Li-ion/Li-polymer protection - delivering precision analog fault detection with zero software dependency and minimal external components.

FAQ

What protection functions does the BQ29716DSET provide?

The BQ29716DSET provides overcharge protection (OVP at 4.425 V), over-discharge protection (UVP at 2.300 V), charge overcurrent protection (OCC at –0.100 V), discharge overcurrent protection (OCD at 0.165 V), and load short-circuit protection (SCD at 0.5 V). All thresholds and associated delay timers are factory-programmed and non-adjustable. The BQ29716DSET executes these protections autonomously without host processor involvement.

Does the BQ29716DSET support zero-voltage charging?

Yes, the BQ29716DSET supports zero-voltage charging: it allows charging of fully depleted cells when the BAT–V– voltage reaches ≥1.7 V. This feature enables recovery of batteries stored at 0 V without requiring external pre-charge circuitry. The BQ29716DSET automatically exits shutdown mode and enables COUT once this condition is met, making it suitable for long-shelf-life portable devices.

What is the operating current consumption of the BQ29716DSET?

The BQ29716DSET draws 4 µA in NORMAL mode (BAT = 3.8 V, V– = 0 V) and only 100 nA in Shutdown mode (BAT = V– = 1.5 V). This ultra-low quiescent current minimizes self-discharge during storage and extends battery shelf life. The BQ29716DSET transitions automatically between modes based on applied supply conditions - no external control signal is required.

What package type is used for the BQ29716DSET?

The BQ29716DSET is housed in a 6-pin WSON package measuring 1.50 mm × 1.50 mm × 0.75 mm, also referenced as DSE in TI documentation. It features an exposed thermal pad for improved heat dissipation and is rated moisture-sensitivity level 2. The BQ29716DSET's compact footprint supports high-density PCB layouts in thin consumer electronics such as smartphones and tablets.

How does the BQ29716DSET detect overcurrent conditions?

The BQ29716DSET detects overcurrent by measuring differential voltage across external FETs: discharge overcurrent (OCD) is sensed between V– and VSS pins (0.165 V threshold), while charge overcurrent (OCC) is sensed between VSS and V– pins (–0.100 V threshold). This V_DS-based method achieves ±5 mV typical accuracy without external sense resistors. The BQ29716DSET then asserts COUT or DOUT low after the programmed delay (8 ms for OCD/OCC) to disable the respective FET.