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Texas Instruments BQ771600DPJR
- Part No.:
- BQ771600DPJR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
BQ771600DPJR.pdf
- Description:
- IC BATT PROT LI-ION 2-4CEL 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,838
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Product details
Overview
BQ771600DPJR from Texas Instruments is a precision overvoltage protection IC for 2- to 4-series Li-ion battery packs, featuring ±10 mV OVP accuracy, external capacitor-programmed delay (1–2 s with 0.1 µF), fixed 4.3 V overvoltage threshold, and CMOS active-high output drive - deployed in e-bike battery management systems to prevent cell damage during charging faults.
For engineers reviewing the BQ771600DPJR datasheet, BQ771600DPJR pinout, BQ771600DPJR application, or BQ771600DPJR equivalent, key selection considerations include its 8-pin WSON package, independent per-cell monitoring architecture, low 1 µA quiescent current, <100 nA input leakage, and compatibility with production-line Customer Test Mode (≤170 ms delay).
Technical Context
The BQ771600DPJR implements independent analog voltage comparators per cell input (V1–V4) referenced to a trimmed internal bandgap, triggering a programmable delay timer upon any cell exceeding 4.3 V. The CD pin controls timing via external capacitor charge/discharge with built-in open/short fault detection.
Its CMOS active-high output drives up to 4.5 mA source current and sinks ≤400 mV at 100 µA load, while operating across –40°C to +110°C with supply voltage range 3 V to 20 V and absolute maximum cell differential voltage of 30 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| OVP Threshold | 4.300 V ±10 mV at 25°C - ensures precise cell-level cutoff before electrolyte decomposition. |
| OVP Hysteresis | 300 mV typical - prevents chatter during recovery near trip point. |
| Quiescent Current | ≈1 µA when all cells below VPROTECT - enables multi-year shelf life in backup systems. |
| Input Leakage | <100 nA per cell input - minimizes voltage error in high-impedance sensing networks. |
| Delay Timer Range | 1–2 s with 0.1 µF CD capacitor - configurable via external component for safety-critical timing margins. |
| Output Type | CMOS active-high - directly interfaces with MOSFET gate drivers or microcontroller interrupt inputs without pull-up. |
| Operating Temp | –40°C to +110°C - supports under-hood and power tool environments. |
Pinout & Package
Package: 8-pin WSON (DPJ), 3.00 mm × 4.00 mm, exposed thermal pad, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Unregulated 3–20 V supply; requires RC filter (RVD/CVD) for noise immunity. |
| V1 | Cell 1 positive sense | Differential input for lowest cell; connects between Cell1+ and VSS. |
| V2 | Cell 2 positive sense | Differential input for second cell; connects between Cell2+ and Cell1+. |
| V3 | Cell 3 positive sense | Differential input for third cell; connects between Cell3+ and Cell2+. |
| V4 | Cell 4 positive sense | Differential input for fourth cell; unused in 2S/3S configurations (short to adjacent Vx). |
| OUT | Overvoltage fault signal | CMOS active-high output; drives high during OV after delay - no external pull-up required. |
| CD | Delay capacitor connection | Charges to 1.5 V then discharges to trigger OUT; detects open/short faults. |
| VSS | Ground reference | IC ground and negative terminal of lowest cell - must be low-impedance return path. |
Key Features
| Feature | Design Value |
|---|---|
| Per-cell independent monitoring | Four dedicated differential inputs (V1–V4) enable true series-string voltage tracking without shared reference errors. |
| External capacitor-programmed delay | Timing set by CCD value (0.1–1 µF); K-factor 10–20 allows predictable, field-adjustable response windows. |
| Customer Test Mode | CD pin shorted to VSS reduces delay to ≤170 ms - accelerates functional testing on production lines. |
| CD fault detection | Integrated timeout circuit asserts OUT if CD fails to charge above 1.5 V or discharge to VSS - eliminates reliance on external diagnostics. |
| Low-power operation | 1 µA ICC and <100 nA per-input leakage preserve battery capacity in always-on protection circuits. |
Applications
| Power Tools | UPS Battery Backup |
|---|---|
Use Scenario: Cordless drill battery pack with 3-series Li-ion cells subjected to fast-charging and high-current discharge cycles. IC Role / Device Role / Timing Role: Overvoltage monitor and protector - independently checks each cell voltage and triggers shutdown within 1–2 s if any exceeds 4.3 V. Use Value: Prevents thermal runaway during charger malfunction by enforcing strict 4.3 V per-cell limit with ±10 mV accuracy. | Use Scenario: Rack-mounted UPS using 4-series Li-ion modules for datacenter backup power with long idle periods. IC Role / Device Role / Timing Role: Standby protection supervisor - continuously monitors cell stack while consuming only 1 µA, asserting fault signal on overvoltage. Use Value: Extends system shelf life via ultra-low quiescent current and avoids false trips with 300 mV hysteresis. |
| eBike Battery Packs | Pedal Assist Bicycles |
Use Scenario: 36 V eBike battery (10S configuration) with integrated BMS where top 4 cells are monitored by BQ771600DPJR as a redundant safety layer. IC Role / Device Role / Timing Role: Independent hardware OVP guard - operates outside main BMS MCU control loop to guarantee fail-safe response. Use Value: Guarantees compliance with UL 2271 by providing certified, non-software-dependent overvoltage cutoff. | Use Scenario: Compact 24 V pedal-assist system (7S pack) where space-constrained design requires minimal footprint and zero external bias components. IC Role / Device Role / Timing Role: Space-optimized protection node - 3.0 × 4.0 mm WSON package fits tight layouts; CMOS output eliminates pull-up resistor. Use Value: Reduces BOM count and PCB area versus discrete comparator solutions while maintaining ±10 mV trip accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ771601DPJR | 4.225 V OVP threshold, 50 mV hysteresis - lower trip point with tighter hysteresis. | Suitable for chemistries requiring earlier cutoff (e.g., high-nickel NMC), but not drop-in for 4.3 V systems. | Select only if battery chemistry mandates sub-4.3 V protection; verify cell voltage distribution margins. |
| BD14000GUL | 4.25 V OVP, 100 mV hysteresis, 2.5 µA ICC, SOT-23-6 package - higher quiescent current, smaller package, no CD pin programmability. | Limited to 2S/3S; lacks external delay tuning and fault detection on timing capacitor. | Use where board space is critical and fixed 200 ms delay suffices; not suitable for 4S or adjustable-timing designs. |
Compared with BQ771600DPJR, BQ771601DPJR offers tighter hysteresis but lower OVP threshold, requiring revalidation of cell voltage margins; BD14000GUL reduces footprint and cost but sacrifices programmable delay and CD fault detection - making it less robust for safety-critical 4S applications.
Availability
BQ771600DPJR is available at Aetrix Electronics and suitable for power tools, UPS battery backup, and light electric vehicles requiring stable component supply, long-term lifecycle support, and automotive-grade temperature performance.
Supply support for BQ771600DPJR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The BQ7716 family is designed specifically for standalone, hardware-based overvoltage protection in multi-cell Li-ion battery packs - prioritizing accuracy, fault resilience, and production test efficiency over software configurability.
FAQ
What is the overvoltage protection threshold of the BQ771600DPJR?
The BQ771600DPJR has a fixed overvoltage protection threshold of 4.300 V with ±10 mV accuracy at 25°C. This value is trimmed during manufacturing and remains stable across temperature, with worst-case drift of ±54 mV at 110°C. The BQ771600DPJR does not support user adjustment of this threshold - it is part of the BQ7716xy family's fixed-threshold variants optimized for standard Li-ion cell voltage limits.
How is the delay time configured on the BQ771600DPJR?
The delay time on the BQ771600DPJR is set by an external capacitor connected to the CD pin, with typical values ranging from 0.1 µF to 1 µF. For a 0.1 µF capacitor, the delay is 1–2 seconds, calculated using tCD = K × CCD, where K = 10–20. The BQ771600DPJR includes built-in detection for open or shorted CD capacitors, ensuring the OUT pin activates even if the timing component fails.
Does the BQ771600DPJR support 2-cell, 3-cell, and 4-cell battery configurations?
Yes, the BQ771600DPJR supports 2-series, 3-series, and 4-series Li-ion battery configurations. For 2S operation, V3 and V4 pins are shorted to V2; for 3S, V4 is shorted to V3. All configurations use the same BQ771600DPJR device - no variant selection or configuration pins are required. The IC independently monitors each connected cell differential voltage relative to VSS.
What is the output drive capability of the BQ771600DPJR?
The BQ771600DPJR features a CMOS active-high output capable of sourcing 4.5 mA at VDD = 14.4 V and sinking ≤400 mV at 100 µA load. It does not require an external pull-up resistor. The output remains valid across the full operating temperature range (–40°C to +110°C) and supply voltage range (3 V to 20 V), making it compatible with both logic-level and high-voltage gate drivers in battery disconnect circuits.
Can the BQ771600DPJR be used in production-line testing without modifying hardware?
Yes, the BQ771600DPJR supports Customer Test Mode: shorting the CD pin to VSS reduces the overvoltage delay to ≤170 ms, enabling rapid functional verification without changing the external capacitor. This mode maintains full electrical safety - the BQ771600DPJR still enforces the same 4.3 V OVP threshold and ±10 mV accuracy, allowing accelerated validation of protection functionality during manufacturing.
BQ771600DPJR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Battery Protection
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 2 ~ 4
- Fault Protection:
- Over Voltage
- Interface:
- -
- Operating Temperature:
- -40°C ~ 110°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (3x4)
BQ771600DPJR FAQ
1.How can I place an order for BQ771600DPJR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ771600DPJR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BQ771600DPJR reliable?
The price and inventory of BQ771600DPJR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ771600DPJR is usually 5 days.
3.What payment methods are accepted for BQ771600DPJR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ771600DPJR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ771600DPJR?
BQ771600DPJR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ771600DPJR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BQ771600DPJR?
For technical support, including BQ771600DPJR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ771600DPJR requirements.
6.How does Aetrix verify that BQ771600DPJR is sourced from the original manufacturer or authorized distributors?
All BQ771600DPJR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BQ771600DPJR meets industry standards.
7.What is the process for return or replacement of BQ771600DPJR?
All BQ771600DPJR units undergo pre-shipment inspection (PSI). If there is an issue with BQ771600DPJR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BQ771600DPJR part is unused and in its original packaging.
Return procedure for BQ771600DPJR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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