My Inquiry
My Account
Texas Instruments BQ76PL536TPAPTQ1
- Part No.:
- BQ76PL536TPAPTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 64-PowerTQFP
- Datasheet:
-
BQ76PL536TPAPTQ1.pdf
- Description:
- IC BAT MFUNC LI-ION 3-6C 64HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,048
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BQ76PL536TPAPTQ1 from Texas Instruments is an automotive-qualified, stackable 3–6 series cell lithium-ion battery monitor and secondary protection IC for EV/HEV battery packs. It integrates a ±1 mV accurate 14-bit ADC, independent overvoltage/undervoltage/overtemperature comparators with programmable thresholds and delay times, six cell-balancing control outputs, and a precision 5-V LDO - all operating from 7.2 V to 30 V supply across –40°C to 105°C.
For engineers reviewing the BQ76PL536TPAPTQ1 datasheet, BQ76PL536TPAPTQ1 pinout, BQ76PL536TPAPTQ1 application, or BQ76PL536TPAPTQ1 equivalent, key selection considerations include its vertical SPI stacking capability (up to 192 cells), hot-pluggable operation without isolation components, and integrated ECC-OTP register storage for safety-critical configuration persistence.
Technical Context
The BQ76PL536TPAPTQ1 implements a dual-path analog monitoring architecture: independent comparator-based secondary protection operates autonomously from the high-speed SAR ADC subsystem, enabling fail-safe response without host intervention. Its level-shifted north/south serial interfaces use current-mode signaling to enable reliable daisy-chained communication across high-voltage stacks.
Cell voltage measurement uses a precision 2.5-V bandgap reference and differential input structure with 14-bit resolution and 6-µs per-channel conversion time. Protection thresholds are stored in factory-programmed ECC-OTP memory, ensuring tamper-resistant configuration integrity for ASIL-B–aligned systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell count support | 3 to 6 series Li-ion cells - enables flexible pack design for 10.8 V to 25.2 V nominal systems |
| ADC accuracy | ±1 mV typical - ensures precise state-of-charge estimation and cell balancing decisions |
| Protection delay range | 0–3200 ms programmable - allows tuning of fault response timing to match pack thermal inertia |
| Supply voltage range | 7.2 V to 30 V continuous - supports full EV/HEV battery brick voltage range including transients |
| Operating temperature | –40°C to 105°C - qualified for under-hood and battery-pack mounting locations |
| Stacking capability | Vertical daisy-chain up to 192 cells - eliminates need for external isolators between ICs |
| Quiescent current | 12 µA sleep / 45 µA idle - minimizes parasitic drain on parked vehicle batteries |
Pinout & Package
TQFP-64 PowerPAD™ package (PAP) with exposed thermal pad soldered to PCB VSS plane for thermal management and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC0–VC6 | Cell voltage sense inputs | Differential inputs for measuring each cell's voltage (VC0 = VSS, VC1–VC6 = cell+ terminals) |
| CB1–CB6 | Cell balance control outputs | Open-drain outputs driving external FETs; balance current set by external resistor |
| TS1+/TS1–, TS2+/TS2– | Differential temperature sensor inputs | Support two NTC thermistors with 14-bit ratio-metric ADC conversion |
| SCLK_H/SDI_H/SDO_H/CS_H/CONV_H/DRDY_H/FAULT_H/ALERT_H | Host SPI interface | Standard 4-wire SPI plus dedicated conversion trigger and status signals |
| SCLK_N/SDI_N/SDO_N/CS_N/CONV_N/DRDY_N/FAULT_N/ALERT_N | North-level-shifted interface | Current-mode outputs to next-higher device in stack; no external level shifters required |
| SCLK_S/SDI_S/SDO_S/CS_S/CONV_S/DRDY_S/FAULT_S/ALERT_S | South-level-shifted interface | Current-mode inputs from next-lower device; enables bidirectional stack synchronization |
Key Features
| Feature | Design Value |
|---|---|
| Stackable vertical interface | Eliminates optocouplers/isolation transformers in multi-IC battery packs - reduces BOM cost and board area |
| Independent secondary protection | Hardware comparators operate without host MCU - meets ASIL-B functional safety requirements |
| ECC-OTP configuration storage | Ensures immutable, error-corrected protection thresholds - prevents corruption during power cycling or EMI events |
| Hot-pluggable operation | Enables live insertion/removal of modules during service - avoids system shutdown for maintenance |
| Integrated 5-V LDO (REG50) | Supplies 3 mA at ±25 mV line/load regulation - powers external microcontrollers or sensors directly |
Applications
| Electric Vehicle Traction Battery | Hybrid Electric Vehicle Energy Storage |
|---|---|
|
Use Scenario: Monitoring 48-cell (14S) traction battery pack in BEV powertrain with active cell balancing and thermal runaway prevention. IC Role / Device Role / Timing Role: Primary analog front-end for voltage, temperature, and secondary protection - triggers FAULT output within 100 µs of overvoltage detection. Use Value: Enables compliance with ISO 26262 ASIL-B via autonomous hardware protection and ECC-secured configuration. |
Use Scenario: Managing 24-cell (12S) high-power HEV battery module supporting regenerative braking and engine start-stop. IC Role / Device Role / Timing Role: Stackable AFE providing synchronized cell measurements across multiple modules using vertical SPI bus. Use Value: Reduces inter-module wiring complexity and eliminates isolation components - lowers system cost and failure points. |
| E-Bike/E-Scooter Battery Pack | Uninterruptible Power System (UPS) |
|
Use Scenario: Compact 10S lithium-ion pack for premium e-bike with integrated cell balancing and overtemperature cutoff. IC Role / Device Role / Timing Role: Single-chip solution for voltage monitoring, thermal sensing, and MOSFET gate control for protection FETs. Use Value: Achieves <12 µA sleep current - extends shelf life and preserves charge during long-term storage. |
Use Scenario: 36-cell (18S) backup battery system for telecom infrastructure requiring hot-swap capability and runtime extension. IC Role / Device Role / Timing Role: Secondary protector with programmable UV/OV delays - prevents nuisance tripping during AC grid transients. Use Value: Supports hot-plug operation without system interruption - enables field-replaceable battery modules. |
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 |
|---|---|---|---|
| BQ76PL536TPAPRQ1 | Same die, 250-unit tape-and-reel packaging vs. 1000-unit for BQ76PL536TPAPTQ1; identical electrical specs and pinout | Lower minimum order quantity - suitable for prototyping and low-volume production | Select BQ76PL536TPAPRQ1 when smaller reels align with build schedule or inventory constraints |
| BQ76PL455AQKTRQ1 | 5-series-only fixed configuration; no VC6/VC5 pins; lower integration (no REG50 LDO, no GPAI) | Targeted at cost-sensitive 15–22 V packs where 6-cell flexibility and auxiliary analog inputs are unnecessary | Choose BQ76PL455AQKTRQ1 only for simplified 5-cell designs with tighter BOM targets |
Compared with BQ76PL536TPAPTQ1, BQ76PL536TPAPRQ1 offers identical functionality in smaller reel size, while BQ76PL455AQKTRQ1 trades configurability and integration for reduced unit cost in fixed 5-cell applications - making BQ76PL536TPAPTQ1 optimal for scalable, safety-critical 3–6S automotive and industrial systems.
Availability
BQ76PL536TPAPTQ1 is available at Aetrix Electronics and suitable for electric vehicle traction batteries, hybrid electric vehicle energy storage systems, and uninterruptible power supplies requiring stable component supply, automotive qualification, and long-term lifecycle support.
Supply support for BQ76PL536TPAPTQ1 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 automotive-grade product development and manufacturing excellence.
The BQ76PL536-Q1 product line delivers high-accuracy, stackable battery monitoring ICs designed specifically for functional safety-compliant EV/HEV battery management systems - emphasizing autonomous protection, configuration integrity, and high-voltage stack interoperability.
FAQ
What is the primary function of the BQ76PL536TPAPTQ1 in a battery management system?
The BQ76PL536TPAPTQ1 serves as a stackable analog front-end and secondary protector for 3–6 series lithium-ion battery packs. It performs high-accuracy cell voltage and temperature measurement via its 14-bit ±1 mV ADC, executes autonomous overvoltage, undervoltage, and overtemperature protection using dedicated comparators, and controls external FETs for passive cell balancing - all without requiring continuous host MCU supervision. The BQ76PL536TPAPTQ1 is explicitly designed for automotive applications and operates across –40°C to 105°C.
Does the BQ76PL536TPAPTQ1 require external isolation components when stacked across multiple devices?
No, the BQ76PL536TPAPTQ1 does not require external isolation components when stacked. Its north/south vertical communication interfaces use current-mode signaling with built-in level shifting, enabling direct daisy-chaining of up to 192 cells across multiple BQ76PL536TPAPTQ1 devices. This eliminates optocouplers, digital isolators, or transformer-based solutions - reducing bill-of-materials cost, PCB area, and potential failure points in high-voltage battery stacks.
How is configuration data stored and protected on the BQ76PL536TPAPTQ1?
Configuration data - including overvoltage, undervoltage, and overtemperature protection thresholds and delay times - is stored in Error Check/Correct (ECC) OTP EPROM memory on the BQ76PL536TPAPTQ1. This nonvolatile memory is factory-programmed and immune to corruption from power loss, radiation, or EMI events. The ECC logic detects and corrects single-bit errors, ensuring configuration integrity for functional safety compliance in automotive applications - a core requirement that distinguishes the BQ76PL536TPAPTQ1 from volatile-register-based alternatives.
What is the role of the REG50 pin on the BQ76PL536TPAPTQ1?
The REG50 pin on the BQ76PL536TPAPTQ1 provides a regulated 5-V output capable of supplying up to 3 mA, with ±25 mV line and load regulation. It powers external circuitry such as microcontrollers, sensors, or level-shifting buffers - eliminating the need for a separate LDO in many BMS designs. The pin requires a 2.2-µF ceramic capacitor to ground for stability, and its output voltage remains tightly controlled across the full –40°C to 105°C operating range, making it suitable for safety-critical automotive subsystems.
Can the BQ76PL536TPAPTQ1 operate in hot-plug scenarios without system reset or damage?
Yes, the BQ76PL536TPAPTQ1 is explicitly designed for hot-pluggable operation. Its internal architecture tolerates live insertion into a powered battery stack without latch-up or damage, and its protection functions remain fully operational during connection transients. This capability is validated per automotive requirements and enables field-serviceable battery modules - a critical feature for EV service depots and UPS maintenance where uninterrupted operation is required during module replacement. The BQ76PL536TPAPTQ1 achieves this through robust input clamping, controlled power-up sequencing, and fault-tolerant interface design.
BQ76PL536TPAPTQ1 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 ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-HTQFP (10x10)
BQ76PL536TPAPTQ1 FAQ
1.How can I place an order for BQ76PL536TPAPTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ76PL536TPAPTQ1 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 BQ76PL536TPAPTQ1 reliable?
The price and inventory of BQ76PL536TPAPTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ76PL536TPAPTQ1 is usually 5 days.
3.What payment methods are accepted for BQ76PL536TPAPTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ76PL536TPAPTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ76PL536TPAPTQ1?
BQ76PL536TPAPTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ76PL536TPAPTQ1 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 BQ76PL536TPAPTQ1?
For technical support, including BQ76PL536TPAPTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ76PL536TPAPTQ1 requirements.
6.How does Aetrix verify that BQ76PL536TPAPTQ1 is sourced from the original manufacturer or authorized distributors?
All BQ76PL536TPAPTQ1 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 BQ76PL536TPAPTQ1 meets industry standards.
7.What is the process for return or replacement of BQ76PL536TPAPTQ1?
All BQ76PL536TPAPTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with BQ76PL536TPAPTQ1, 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 BQ76PL536TPAPTQ1 part is unused and in its original packaging.
Return procedure for BQ76PL536TPAPTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ76PL536TPAPTQ1 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…
