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Texas Instruments BQ26150DCKR
- Part No.:
- BQ26150DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
BQ26150DCKR.pdf
- Description:
- IC BATT AUTHENTICATION SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,565
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Product details
Overview
BQ26150DCKR from Texas Instruments is a battery pack security and authentication IC for portable electronics, implementing bqSECURE™ cryptographic authentication via 96-bit unique device ID, 16-bit programmable CRC seed, and 16-bit device-specific polynomial. It operates on a single-wire HDQ interface at 5 kbit/s, draws <30 μA in sleep mode, and supports pass-through communication to secondary HDQ devices such as gas gauges - used in cellular phones, digital cameras, and MP3 players.
For engineers reviewing the BQ26150DCKR datasheet, BQ26150DCKR pinout, BQ26150DCKR application, or BQ26150DCKR equivalent, key selection considerations include HDQ bus-powered operation, 12.5 kV IEC ESD protection on HDQ, SC-70-5 package constraints, and compatibility with existing bq262xx/bq27xxx battery monitors via one-time or continuous pass-through modes.
Technical Context
The BQ26150DCKR implements a Type 2 linear feedback shift register-based 16-bit CRC engine with fully programmable tap points defined by its unique 16-bit polynomial coefficients. Authentication requires host-side decryption of encrypted device ID (96-bit), seed (16-bit), and polynomial (16-bit) stored in public nonvolatile memory, followed by synchronized CRC computation using a 32-bit random challenge.
It features dual HDQ interfaces: HDQ (pin 1) for host communication and HDQP (pin 4) for pass-through to secondary devices. Power is derived solely from the HDQ bus via external capacitor charging (PWR pin 5), eliminating need for separate VCC supply - enabling true single-wire operation with internal power management that enters <30 μA sleep when bus is idle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Authentication Method | 96-bit unique device ID + 16-bit CRC seed + 16-bit device-specific polynomial, enabling cryptographically secure pack validation |
| Interface | Single-wire HDQ at 5 kbit/s; no external clock required - reduces MCU GPIO count and firmware overhead |
| Power Source | Bus-powered via HDQ line and external capacitor on PWR pin - eliminates need for dedicated supply rail |
| ESD Protection | 12.5 kV IEC 61000-4-2 on HDQ input - ensures robustness in handheld device insertion/removal cycles |
| Operating Temp | –20°C to +70°C - qualified for consumer portable applications including smartphones and digital cameras |
| Package | 5-pin SC-70 (DCK) - 2.0 mm × 1.25 mm footprint ideal for space-constrained battery pack PCBs |
| Nonvolatile Memory | 16 bytes user-programmable OTP + 32 bytes dedicated to encrypted/decrypted authentication keys - enables secure manufacturing programming |
Pinout & Package
Package: SC-70-5 (DCK), 2.0 mm × 1.25 mm, 0.65 mm pitch, moisture sensitivity level 1 (MSL-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HDQ (Pin 1) | Primary bidirectional HDQ data line | Host-facing single-wire interface; provides communication, power harvesting, and break signaling - open-drain with external pull-up |
| VSS (Pins 2, 3) | Ground reference | Dual ground pins reduce impedance and improve noise immunity in compact battery pack layouts |
| HDQP (Pin 4) | Secondary HDQ pass-through line | Connects to downstream HDQ device (e.g., bq26200); enables one-time or continuous pass-through without host reconfiguration |
| PWR (Pin 5) | Power capacitor connection | Charges external capacitor during HDQ high phase; discharges to power internal circuitry during low phase - enables zero-VCC operation |
Key Features
| Feature | Design Value |
|---|---|
| Bus-powered operation | Eliminates need for separate VCC supply - simplifies battery pack design and reduces component count |
| HDQ pass-through modes | Supports both continuous and one-time pass-through to legacy gas gauges (bq262xx/bq27xxx), preserving system compatibility |
| Encrypted authentication registers | Public memory stores encrypted 96-bit ID, 16-bit seed, and 16-bit polynomial - prevents cloning while allowing host-side decryption |
| Internal time-base | No external crystal or RC oscillator required - reduces bill-of-materials and board area in portable systems |
| OTP memory architecture | 16 bytes general-purpose + 32 bytes authentication OTP - enables secure, one-time programming of pack-specific keys during manufacturing |
Applications
| Cellular Phones | Digital Cameras |
|---|---|
Use Scenario: Prevent unauthorized third-party battery packs from powering smartphones, ensuring safety and warranty compliance. IC Role / Device Role / Timing Role: Security authenticator verifying pack origin via cryptographic handshake before enabling charging or power delivery. Use Value: Blocks counterfeit batteries using identical HDQ protocol but lacking valid encrypted device ID and CRC parameters. |
Use Scenario: Secure battery authentication in high-end digital cameras where thermal management and runtime accuracy depend on OEM pack calibration. IC Role / Device Role / Timing Role: Cryptographic gatekeeper performing challenge-response CRC authentication during pack insertion. Use Value: Ensures only calibrated, thermally characterized packs operate - preventing overcurrent or thermal runaway from unqualified cells. |
| MP3 Players | PDA & Smartphones |
Use Scenario: Enable secure battery replacement in portable audio devices without compromising firmware-level power management logic. IC Role / Device Role / Timing Role: HDQ endpoint providing authenticated identity to host MCU during boot sequence and runtime polling. Use Value: Maintains accurate fuel-gauge reporting by validating pack authenticity before enabling gas gauge communication pass-through. |
Use Scenario: Integrate authentication into legacy PDA platforms using existing HDQ-based battery monitoring infrastructure. IC Role / Device Role / Timing Role: Transparent pass-through enabler supporting both authentication (BQ26150DCKR) and fuel gauging (bq26200) on same HDQ bus. Use Value: Allows upgrade to secure authentication without redesigning host firmware or replacing gas gauge ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery pack authentication applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ26100DCKR | Legacy predecessor with identical SC-70-5 package and HDQ interface, but lacks HDQP pin and pass-through capability - no secondary device support | Only suitable for standalone authentication; cannot coexist with existing gas gauges on same HDQ bus | Select when authentication-only function is sufficient and no legacy HDQ monitor integration is needed |
| BQ26200DCKR | Integrated gas gauge + authentication in single IC; includes ADC, temperature sensing, and coulomb counting - not a drop-in replacement | Replaces both BQ26150DCKR and separate fuel gauge; requires full system firmware redesign | Choose for new designs requiring combined authentication and precise state-of-charge estimation - not for retrofitting |
Compared with BQ26150DCKR, BQ26100DCKR offers basic authentication only and cannot support pass-through to secondary devices, while BQ26200DCKR integrates full fuel gauging functionality but demands complete system revalidation - making BQ26150DCKR the sole option for adding security to existing HDQ-based battery monitor architectures.
Availability
BQ26150DCKR is available at Aetrix Electronics and suitable for cellular phones, digital cameras, and MP3 players requiring stable component supply for consumer electronics production programs.
Supply support for BQ26150DCKR 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, specializing in analog, embedded processing, and power management technologies for industrial, automotive, and consumer markets.
The BQ26150DCKR belongs to TI's bqSECURE™ battery authentication product line, designed specifically to prevent counterfeit battery use in portable electronics through hardware-enforced cryptographic validation and seamless HDQ bus integration.
FAQ
What is the primary function of the BQ26150DCKR in a battery pack?
The BQ26150DCKR serves as a cryptographic security authenticator for lithium-ion battery packs. It validates pack authenticity using a 96-bit unique device ID, 16-bit CRC seed, and 16-bit device-specific polynomial - ensuring only authorized packs operate in end equipment like smartphones and digital cameras. The BQ26150DCKR performs this verification over a single-wire HDQ interface without requiring an external power supply.
Does the BQ26150DCKR require an external power supply?
No, the BQ26150DCKR is bus-powered exclusively from the HDQ line via an external capacitor connected to the PWR pin (Pin 5). During HDQ high periods, the capacitor charges; during low periods, it discharges to power the IC. This eliminates the need for a separate VCC rail - a key design advantage for space-constrained battery pack PCBs where the BQ26150DCKR is deployed.
How does the BQ26150DCKR support compatibility with existing battery gas gauges?
The BQ26150DCKR supports two HDQ pass-through modes - continuous and one-time - enabling communication between the host and secondary HDQ devices such as bq262xx or bq27xxx gas gauges. When enabled via the CPASS or OPASS bits in the control register, the BQ26150DCKR transparently relays commands through HDQP (Pin 4), allowing legacy fuel gauge functionality to remain intact while adding authentication security.
What package type is used for the BQ26150DCKR, and why is it suitable for battery packs?
The BQ26150DCKR uses the SC-70-5 (DCK) package: 2.0 mm × 1.25 mm, 0.65 mm pitch, MSL-1 rated. Its ultra-compact size and low profile make it ideal for integration into thin, space-limited battery pack PCBs - especially where mechanical clearance and weight are critical, such as in smartphones and portable media players using the BQ26150DCKR.
Can the BQ26150DCKR be reprogrammed after initial programming?
The BQ26150DCKR contains one-time programmable (OTP) nonvolatile memory. While OTP registers can be written multiple times, each write performs a bitwise OR with existing data - meaning bits can only transition from 0 to 1, never reversed. Therefore, the BQ26150DCKR's authentication keys and user data must be carefully programmed during final pack assembly, as field reprogramming of critical security parameters is not possible.
BQ26150DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- bqSECURE™
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Battery Authentication
- Battery Chemistry:
- -
- Number of Cells:
- -
- Fault Protection:
- -
- Interface:
- HDQ
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
BQ26150DCKR FAQ
1.How can I place an order for BQ26150DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ26150DCKR 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 BQ26150DCKR reliable?
The price and inventory of BQ26150DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ26150DCKR is usually 5 days.
3.What payment methods are accepted for BQ26150DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ26150DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ26150DCKR?
BQ26150DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ26150DCKR 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 BQ26150DCKR?
For technical support, including BQ26150DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ26150DCKR requirements.
6.How does Aetrix verify that BQ26150DCKR is sourced from the original manufacturer or authorized distributors?
All BQ26150DCKR 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 BQ26150DCKR meets industry standards.
7.What is the process for return or replacement of BQ26150DCKR?
All BQ26150DCKR units undergo pre-shipment inspection (PSI). If there is an issue with BQ26150DCKR, 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 BQ26150DCKR part is unused and in its original packaging.
Return procedure for BQ26150DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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