My Inquiry
My Account
Texas Instruments BQ76PL536PAPT
- Part No.:
- BQ76PL536PAPT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 64-PowerTQFP
- Datasheet:
-
BQ76PL536PAPT.pdf
- Description:
- IC BAT MFUNC LI-ION 3-6C 64HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,732
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BQ76PL536PAPT from Texas Instruments is a stackable 3–6 series cell lithium-ion battery monitor and secondary protection IC with integrated 14-bit ADC (±3 mV typical accuracy, 6-µs conversion time), independent overvoltage/undervoltage/overtemperature protection, and cell balancing control outputs-designed for electric vehicle (EV) and large-format battery systems requiring high-voltage stack monitoring without isolation components.
For engineers reviewing the BQ76PL536PAPT datasheet, BQ76PL536PAPT pinout, BQ76PL536PAPT application, or BQ76PL536PAPT equivalent, this page delivers verified technical context, real-world use cases, validated alternatives, and supply-ready availability details specific to the LQFP-64 PowerPAD™ package and industrial temperature range (–40°C to 85°C).
Technical Context
The BQ76PL536PAPT implements a precision SAR ADC with factory-trimmed gain/offset compensation across nine analog inputs: six cell voltages (VC1–VC6), one six-cell brick voltage (BAT), two differential temperature sensors (TS1±, TS2±), and one general-purpose analog input (GPAI±). It uses an internal 2.5-V bandgap reference (VREF) and supports configurable 6-µs/channel conversion timing.
Its dual-interface architecture includes a host SPI interface (SCLK_H/SDI_H/SDO_H/CS_H) and vertical stack interfaces (North/South current-mode signaling) enabling up to 192-cell monitoring without external isolation. Protection logic operates autonomously via ECC-OTP-programmable thresholds and delay times, with dedicated FAULT_H/ALERT_H/DRDY_H outputs and independent comparator-based secondary protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell support | 3 to 6 series Li-ion cells, all chemistries-enables flexible pack design for EV, e-bike, and UPS applications. |
| ADC resolution & accuracy | 14-bit SAR ADC with ±3 mV typical cell voltage accuracy-supports precise state-of-charge estimation and safety-critical threshold detection. |
| Conversion time | 6 µs per channel (factory-trimmed setting)-enables fast, synchronized multi-cell sampling within tight system timing budgets. |
| Supply range | 6 V to 30 V continuous, 36 V peak-directly interfaces high-voltage battery stacks without external regulators. |
| Operating temperature | –40°C to +85°C-qualified for under-hood EV, industrial battery storage, and e-mobility environments. |
| Protection features | Programmable OV/UV/OT thresholds with independent delay timers and dedicated FAULT/ALERT outputs-provides autonomous secondary safety layer without host controller dependency. |
| Integrated LDO | 5-V, 3-mA precision LDO (REG50) with ±25 mV line/load regulation-powers external microcontrollers or sensors with low-noise, stable rail. |
Pinout & Package
The BQ76PL536PAPT is housed in a 64-pin LQFP PowerPAD™ package with exposed thermal pad (TAB) requiring soldering to VSS-connected PCB copper area for thermal performance and specification compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC1–VC6, VC0 | Analog cell voltage sense inputs | Direct high-impedance connection points for measuring individual cell potentials (VCn–VCn−1) and stack reference (VC0 = VSS). |
| CB1–CB6 | Digital cell balancing control outputs | Open-drain outputs driving external FETs; balance current set by external resistor-enables passive cell equalization per cell. |
| TS1±, TS2± | Differential temperature sensor inputs | Accepts thermistor or RTD signals; supports two independent thermal zones for pack-level thermal management. |
| SCLK_H/SDI_H/SDO_H/CS_H | Host SPI interface | Standard 4-wire SPI (3.3-V/5-V tolerant) for register access, configuration, and data readback from host MCU. |
| CONV_H/DRDY_H/ALERT_H/FAULT_H | Host status/control signals | Asynchronous handshake and fault reporting-enables deterministic host response to conversion completion or safety events. |
| SCLK_N/SDI_N/SDO_N/CS_N CONV_N/DRDY_N/ALERT_N/FAULT_N |
North vertical interface | Current-mode outputs/inputs for daisy-chained communication to next-higher device in stack-eliminates need for level shifters or isolators. |
| SCLK_S/SDI_S/SDO_S/CS_S CONV_S/DRDY_S/ALERT_S/FAULT_S |
South vertical interface | Current-mode inputs/outputs for daisy-chained communication from next-lower device-enables bidirectional stack-wide synchronization. |
| REG50/AUX | User power outputs | 5-V LDO output (REG50) and switched 1-mA limited AUX output-powers auxiliary circuitry with built-in current limiting and thermal foldback. |
Key Features
| Feature | Design Value |
|---|---|
| Stackable vertical interface | Enables up to 192-cell monitoring using only current-mode signaling-no optocouplers, capacitors, or transformers required between devices. |
| ECC-OTP configuration storage | Stores protection thresholds, delays, and calibration data in error-correcting one-time-programmable memory-ensures field reliability and eliminates external EEPROM dependency. |
| Independent secondary protection | Dedicated comparators with programmable OV/UV/OT thresholds and delay timers operate autonomously-maintains safety even if host MCU fails or loses communication. |
| High-accuracy 14-bit ADC | ±3 mV typical cell voltage accuracy across –40°C to +85°C-supports ISO 26262 ASIL-B–capable battery management functions. |
| Hot-pluggable operation | Supports live insertion into powered battery stacks without latch-up or damage-reduces maintenance downtime in modular energy storage systems. |
Applications
| Electric Vehicle Battery Pack | E-Bike / E-Scooter Power System |
|---|---|
|
Use Scenario: Monitoring and protecting 48–96 V traction battery packs in passenger EVs and commercial vehicles. IC Role / Device Role / Timing Role: Primary secondary protector and cell voltage/temperature monitor-performs autonomous OV/UV/OT detection and reports faults to vehicle controller via FAULT_H/ALERT_H. Use Value: Enables compliance with UN38.3 and ISO 6469-3 safety standards through certified, self-contained protection logic independent of host software. |
Use Scenario: Managing compact 36–48 V lithium battery modules in lightweight personal mobility devices. IC Role / Device Role / Timing Role: Stackable AFE providing cell balancing control (CB1–CB6), thermal monitoring (TS1±/TS2±), and brick voltage measurement (BAT) for runtime optimization. Use Value: Extends cycle life by enabling passive balancing during charging and preventing thermal runaway via dual-sensor OT detection with 125°C shutdown threshold. |
| Uninterruptible Power Supply (UPS) | Large-Format Energy Storage System |
|
Use Scenario: High-reliability backup power systems requiring >10-year service life and zero-failure safety enforcement. IC Role / Device Role / Timing Role: Secondary protection layer verifying primary BMS decisions-triggers immediate FAULT_H assertion on OV/UV/OT violation with <100 µs comparator response time. Use Value: Eliminates single-point failure risk by decoupling critical safety functions from host firmware, satisfying IEC 62040-1 UPS safety requirements. |
Use Scenario: Utility-scale or commercial BESS with 200+ V DC stacks deployed in grid-tied solar/wind installations. IC Role / Device Role / Timing Role: Vertical-stack node in distributed monitoring architecture-communicates via North/South interfaces to central controller while performing local cell balancing and thermal supervision. Use Value: Reduces system cost and complexity by removing isolation components between stacked ICs, lowering BOM count and PCB area by >30% versus isolated solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor and secondary protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ76PL536PAPR | Same die, tape-and-reel packaging (1000-unit quantity); identical electrical specs, timing, and pinout. | No functional difference-used interchangeably in production where volume order quantities align. | Select BQ76PL536PAPR for high-volume manufacturing; BQ76PL536PAPT for prototyping or low-volume builds (250-unit reel). |
| BQ76PL455A-Q1 | Automotive-qualified (AEC-Q100 Grade 1), 5-cell max, no vertical stacking interface, lower max supply voltage (24 V). | Targeted at automotive 12–48 V systems requiring ASIL-B compliance-not suitable for >48 V or stackable industrial designs. | Choose BQ76PL455A-Q1 only when automotive qualification and smaller cell count are mandatory; BQ76PL536PAPT remains superior for scalable industrial/EV stacks. |
Compared with BQ76PL536PAPR, the BQ76PL536PAPT offers identical functionality in a smaller reel size-ideal for NPI and validation. Versus BQ76PL455A-Q1, it provides higher voltage tolerance, vertical stacking, and broader industrial temperature support, making it the preferred choice for non-automotive high-cell-count applications.
Availability
BQ76PL536PAPT is available at Aetrix Electronics and suitable for electric vehicle battery packs, e-mobility power systems, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-critical deployments.
Supply support for BQ76PL536PAPT 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 BQ76PL536PAPT belongs to TI's high-voltage battery monitor and protector product line-engineered specifically for EV, HEV, and industrial energy storage applications demanding autonomous secondary protection and scalable multi-cell monitoring.
FAQ
What is the maximum number of BQ76PL536PAPT devices that can be stacked vertically?
The BQ76PL536PAPT supports vertical stacking of up to 32 devices, enabling monitoring of up to 192 series-connected lithium-ion cells. This is achieved using its current-mode North/South interfaces (SCLK_N/SDI_N/SDO_N/CS_N and SCLK_S/SDI_S/SDO_S/CS_S), which eliminate the need for external isolation components between devices-reducing system cost and PCB complexity while maintaining signal integrity across high-voltage differentials.
Does the BQ76PL536PAPT require an external microcontroller to perform protection functions?
No-the BQ76PL536PAPT executes overvoltage, undervoltage, and overtemperature protection autonomously using its built-in comparators and ECC-OTP-programmable thresholds. The FAULT_H and ALERT_H outputs assert immediately upon threshold violation, independent of host communication. A microcontroller is only required for advanced functions like cell balancing control, configuration updates, or data logging-making the BQ76PL536PAPT suitable for fail-safe BMS architectures.
What is the accuracy and resolution of the BQ76PL536PAPT's ADC for cell voltage measurements?
The BQ76PL536PAPT features a factory-trimmed 14-bit SAR ADC with ±3 mV typical accuracy for cell voltage (VCn–VCn−1) measurements across –40°C to +85°C. Its resolution is ~378 µV per LSB, and it achieves 6-µs conversion time per channel when configured for optimal speed. Accuracy is maintained via internal 2.5-V bandgap reference (VREF) and gain/offset calibration stored in OTP memory.
Can the BQ76PL536PAPT measure both cell voltages and pack voltage simultaneously?
Yes-the BQ76PL536PAPT measures six individual cell voltages (VC1–VC6 relative to VC0/VSS) and the full pack (brick) voltage (BAT relative to VSS) using separate ADC input channels. The brick voltage input (BAT) has a dedicated 14-bit measurement path with ±0.3% accuracy up to 30 V, enabling simultaneous high-precision monitoring of per-cell imbalance and total pack health without multiplexing delays or accuracy trade-offs.
What thermal protection features does the BQ76PL536PAPT provide?
The BQ76PL536PAPT integrates two differential temperature sensor inputs (TS1± and TS2±) supporting independent thermal zone monitoring. It provides programmable overtemperature protection with a 125°C to 156°C shutdown threshold (typical 142°C), 8°C–25°C hysteresis, and configurable detection delay (0–2550 ms). Thermal shutdown is hardware-based and operates independently of the ADC or host interface-ensuring robust response to thermal runaway conditions in EV and energy storage applications.
BQ76PL536PAPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-PowerTQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Multi-Function Controller
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 3 ~ 6
- Fault Protection:
- Over Temperature, Over/Under Voltage
- Interface:
- SPI
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-HTQFP (10x10)
BQ76PL536PAPT FAQ
1.How can I place an order for BQ76PL536PAPT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ76PL536PAPT 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 BQ76PL536PAPT reliable?
The price and inventory of BQ76PL536PAPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ76PL536PAPT is usually 5 days.
3.What payment methods are accepted for BQ76PL536PAPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ76PL536PAPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ76PL536PAPT?
BQ76PL536PAPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ76PL536PAPT 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 BQ76PL536PAPT?
For technical support, including BQ76PL536PAPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ76PL536PAPT requirements.
6.How does Aetrix verify that BQ76PL536PAPT is sourced from the original manufacturer or authorized distributors?
All BQ76PL536PAPT 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 BQ76PL536PAPT meets industry standards.
7.What is the process for return or replacement of BQ76PL536PAPT?
All BQ76PL536PAPT units undergo pre-shipment inspection (PSI). If there is an issue with BQ76PL536PAPT, 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 BQ76PL536PAPT part is unused and in its original packaging.
Return procedure for BQ76PL536PAPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ76PL536PAPT Tags
-
BQ29700DSER
Texas Instruments
-
S-8241ABKMC-GBKT2G
ABLIC Inc.
-
S-8241ABPMC-GBPT2G
ABLIC Inc.
-
BQ27427YZFR
Texas Instruments
-
BQ27426YZFR
Texas Instruments
-
STC3117IJT
STMicroelectronics
-
STC3115IJT
STMicroelectronics
-
BQ76925RGER
Texas Instruments
-
NPM1100-QDAA-R
Nordic Semiconductor ASA
-
BQ27441DRZR-G1A
Texas Instruments
-
STC3115AIQT
STMicroelectronics
-
S-8252AAL-M6T1U
ABLIC Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
