Texas Instruments BQ294713DSGR

Overview

BQ294713DSGR from Texas Instruments is a factory-programmed overvoltage protection IC for 2- to 4-series Li-ion battery packs, featuring ±10 mV OVP accuracy, 4.60 V fixed overvoltage threshold, and external capacitor-programmed delay timer (1–2 s with 0.1 µF). It operates across –40°C to +110°C and delivers active-high CMOS output for fuse control in notebook and UPS backup systems.

For engineers reviewing the BQ294713DSGR datasheet, BQ294713DSGR pinout, BQ294713DSGR application, or BQ294713DSGR equivalent, this page provides verified technical context, validated pin functions, confirmed 8-pin WSON package mapping, real-world timing behavior of the CD delay circuit, and two documented alternative part numbers with explicit functional and configuration differences.

Technical Context

The BQ294713DSGR independently monitors up to four cell voltages (V1–VSS through V4–V3) using precision analog comparators with factory-trimmed 4.60 V OVP threshold and 300 mV hysteresis. Upon detection of any cell exceeding VOV, it initiates an external RC-based delay timer via the CD pin, which charges then discharges the capacitor before asserting the active-high OUT signal.

This device implements second-level protection logic with timeout detection on the CD pin-triggering immediate fault response if the capacitor is open or shorted-and supports customer test mode (≤170 ms delay) by grounding CD. Its low 1 µA supply current and <100 nA per-cell input leakage enable long-term pack monitoring without significant self-discharge impact.

Key Specifications

Pinout & Package

Package: 8-pin WSON (DSG), 2.00 mm × 2.00 mm, exposed thermal pad (PowerPAD™) recommended to be connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BQ294704DSGR (4.40 V) and BQ294706DSGR (4.55 V), the BQ294713DSGR provides the highest factory-set OVP threshold in the family, enabling full utilization of high-capacity NMC cells charged to 4.60 V while retaining identical delay behavior, leakage, and thermal performance.

Availability

BQ294713DSGR is available at Aetrix Electronics and suitable for notebook battery management, UPS backup systems, and industrial portable equipment requiring stable component supply, long-lifecycle support, and guaranteed traceability for safety-critical designs.

Supply support for BQ294713DSGR 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 company delivering analog and embedded processing solutions, with leadership in battery management ICs and industrial-grade protection devices.

The BQ2947 family is designed specifically for second-level overvoltage protection in multi-cell Li-ion battery packs, emphasizing precision threshold accuracy, configurable delay timing, and robust fault detection for safety-certified applications.

FAQ

What is the exact overvoltage protection threshold of the BQ294713DSGR?

The BQ294713DSGR has a factory-programmed overvoltage protection threshold of 4.60 V with ±10 mV accuracy at 25°C. This value is trimmed during manufacturing and does not require external components. The BQ294713DSGR maintains this specification across its full operating temperature range of –40°C to +110°C, with drift bounded to ±54 mV at 110°C.

Does the BQ294713DSGR support 2-cell and 3-cell battery configurations?

Yes, the BQ294713DSGR supports 2S, 3S, and 4S Li-ion configurations. For 2S operation, pins V3 and V4 must be shorted to V2; for 3S, V4 is shorted to V3. The device uses only the required Vx inputs (V1–VSS through Vn–Vn−1) and ignores unused upper sense pins, maintaining full accuracy and low leakage in all supported topologies.

How is the overvoltage delay time set on the BQ294713DSGR?

The BQ294713DSGR uses an external capacitor on the CD pin to set the overvoltage delay time. With a 0.1 µF capacitor, the delay is 1–2 seconds. The relationship is t_CD = K × C_CD, where K ranges from 10 to 20. The BQ294713DSGR also includes CD-pin timeout detection to force immediate fault response if the capacitor is open or shorted.

What output drive capability does the BQ294713DSGR provide?

The BQ294713DSGR features a CMOS Active High output capable of sourcing 4.5 mA at VDD – 0.3 V when asserted, and sinking up to 14 mA when inactive (with 5 kΩ pull-up). This allows direct interfacing with standard NMOS gate drivers for fuse-switch control without additional level-shifting or buffering circuitry.

Is the BQ294713DSGR compatible with high-temperature battery pack environments?

Yes, the BQ294713DSGR is rated for operation from –40°C to +110°C and specified with thermal metrics including R_θJB = 32.5°C/W. Its electrical characteristics-including OVP accuracy, supply current (1 µA), and input leakage (<100 nA)-are guaranteed across this full range, making it suitable for sealed UPS and industrial portable equipment enclosures.