My Inquiry
My Account
Texas Instruments BQ27Z561YPHR
- Part No.:
- BQ27Z561YPHR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 12-XFBGA, DSBGA
- Datasheet:
-
BQ27Z561YPHR.pdf
- Description:
- IC BATT FUEL LI-ION 1C 12DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,626
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BQ27Z561YPHR from Texas Instruments is a flash-programmable, Impedance Track™ battery gas gauge IC for 1-series Li-ion/Li-polymer battery packs, featuring dual independent ADCs, SHA-256 authentication, 1mΩ current sense support, and operation down to 2V. It performs simultaneous current/voltage sampling and coulomb counting with <1µV input offset error, enabling accurate state-of-charge estimation in smartphones and portable health devices.
For engineers reviewing the BQ27Z561YPHR datasheet, BQ27Z561YPHR pinout, BQ27Z561YPHR application, or BQ27Z561YPHR equivalent, key selection considerations include its dual-ADC architecture for real-time power calculation, low-power SLEEP/DEEP SLEEP modes (<11μA/<9μA), I²C/HDQ dual-interface flexibility, integrated 1.8V LDO, and support for both internal and external (NTC) temperature sensing in compact DSBGA packaging.
Technical Context
The BQ27Z561YPHR implements a Harvard-architecture RISC CPU running at up to 4.2MHz with adaptive 8/16/24-bit instruction pipeline, paired with two dedicated delta-sigma ADCs: one integrating coulomb counter (3.74µV resolution, ±100mV range) and one general-purpose 16-bit ADC (38µV resolution, scalable full-scale). Its Impedance Track™ algorithm relies on simultaneous voltage/current/temperature acquisition - enabled by BAT_SNS Kelvin sensing, TS thermistor interface with 18kΩ internal pull-up, and internal temperature sensor.
Power management includes a capacitor-less 1.8V LDO (REG18) referenced to REF1 (1.21V ±80ppm/°C), while clocking uses a frequency-locked HFO (16.78MHz) and LFO (65.536kHz). Communication supports 400kHz I²C and HDQ one-wire protocols - mutually exclusive after configuration - with programmable active-high/low INT and PULS outputs for SOC/voltage/temperature fault signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V–5.5V - enables operation during deep discharge and compatibility with standard Li-ion pack voltages. |
| Coulomb Counter Resolution | 3.74µV - supports accurate charge/discharge tracking with 1mΩ sense resistors and ±100mV differential input range. |
| I²C Speed | 400kHz - allows high-speed host programming and real-time data access without bus contention. |
| SLEEP Mode Current | <11µA - maintains periodic coulomb counting while minimizing battery drain during idle periods. |
| Internal Temp Sensor | 1.73mV/°C output slope - provides rapid pack temperature estimation without external components. |
| SHA-256 Authentication | Hardware-resident responder - prevents unauthorized battery pack replacement and ensures system-pack trust. |
| ADC Effective Resolution | 15 bits - delivers precise voltage, temperature, and reference measurements for Impedance Track modeling. |
Pinout & Package
Package: 12-pin DSBGA (YPH), 1.69mm × 2.07mm, ball pitch 0.4mm, designed for space-constrained portable battery packs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BAT | Battery voltage input (Kelvin) | Kelvin-sensed cell voltage reference; requires 1µF decoupling to VSS for stable ADC reference. |
| BAT_SNS | Kelvin sense return | Non-current-carrying path for precise BAT voltage measurement, eliminating IR drop error. |
| SRP / SRN | Coulomb counter analog inputs | Differential pair measuring voltage across external sense resistor; supports ≤1mΩ for high-current apps. |
| VSS | Ground reference | Common analog/digital ground plane connection point for all internal circuitry and external sensors. |
| SCL / SDA/HDQ | I²C clock/data or HDQ one-wire | Shared bidirectional interface; SDA/HDQ pin operates in either I²C or HDQ mode - irreversible switch. |
| INT / PULS | Programmable digital outputs | Active-high/low interrupt signaling for SOC/voltage/temperature faults; PULS offers configurable pulse width. |
| TS | External NTC thermistor input | Analog input with internal 18kΩ pull-up; supports 10kΩ NTC (e.g., Semitec 103AT-2) for accurate thermal monitoring. |
| CE | Chip enable input | Active-high control: drives device into OFF mode (<1.9µA) when pulled low; disables internal LDO rail. |
Key Features
| Feature | Design Value |
|---|---|
| Impedance Track™ Algorithm | Real-time battery impedance modeling using synchronized voltage/current/temperature data for ±1% SOC accuracy over life. |
| Dual Independent ADCs | Simultaneous coulomb counting (±100mV, 3.74µV LSB) and multi-channel voltage/temperature sampling (15-bit effective resolution). |
| Low-Power Operating Modes | SLEEP (<11µA), DEEP SLEEP (<9µA), and OFF (<1.9µA) - configurable timing preserves gauging accuracy while extending shelf life. |
| Secure Authentication | Hardware-accelerated SHA-256 responder - blocks unverified battery packs and enforces OEM security policies. |
| Flexible Temperature Sensing | Integrated die-temp sensor + external NTC interface with linearization bias - eliminates need for discrete thermal ICs. |
| Flash Programmability | 32kB instruction + 4kB data flash - enables field updates of gauging algorithms, JEITA profiles, and safety thresholds. |
Applications
| Smartphones | Digital Cameras |
|---|---|
|
Use Scenario: Real-time battery remaining capacity and health reporting during video capture, fast charging, and display-intensive UI operation. IC Role / Device Role / Timing Role: Primary fuel gauge IC performing Impedance Track™ modeling, coulomb counting, and JEITA-compliant charge control via I²C. Use Value: Enables accurate %SOC display, prevents unexpected shutdown, and extends cycle life through temperature-aware charging profiles. |
Use Scenario: Power management during burst-mode image capture, LCD preview, and USB-C fast charging in compact form factors. IC Role / Device Role / Timing Role: Battery monitor interfacing with camera SoC via HDQ for minimal pin count; measures voltage, current, and thermistor temperature synchronously. Use Value: Delivers ±1% SOC accuracy across wide temperature ranges and supports safe fast-charge handshaking without additional analog front-end. |
| Tablet Computing | Wearable Health Devices |
|
Use Scenario: Multi-cell 1-series battery pack monitoring under variable load (CPU/GPU/display), including low-power suspend/resume transitions. IC Role / Device Role / Timing Role: Central gauging unit using Kelvin BAT/BAT_SNS sensing and dual ADCs to maintain accuracy during dynamic load shifts and deep discharge recovery. Use Value: Ensures reliable low-battery warnings and graceful OS shutdown even below 2.5V, leveraging 2V minimum operating voltage. |
Use Scenario: Continuous battery telemetry in ECG monitors, glucose meters, and smart patches where size, power, and safety certification are critical. IC Role / Device Role / Timing Role: Integrated gas gauge with SHA-256 authentication and lifetime logging - records max/min voltage/current/temperature for regulatory traceability. Use Value: Reduces BOM count by combining coulomb counter, ADC, temp sensor, and secure crypto in single 1.69×2.07mm DSBGA package. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery fuel gauging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ27Z561DWR | Same die, WSON-12 package (4mm × 4mm) - larger footprint, exposed thermal pad, higher thermal resistance (RθJA = 64.1°C/W vs. 52.7°C/W for YPH). | Preferred for higher-power or thermally constrained designs where board area permits larger package; not suitable for ultra-thin mobile PCBs. | Select BQ27Z561DWR only if thermal performance requirements exceed DSBGA capability or if WSON assembly infrastructure is already established. |
| BQ27Z562YPHR | Pin-compatible successor with enhanced Impedance Track™ v3.0 algorithm, lower SLEEP current (8µA), and extended -40°C to 105°C junction rating. | Required for automotive cabin modules or industrial handhelds needing extended temperature operation and tighter SOC accuracy. | Choose BQ27Z562YPHR for new designs targeting >105°C ambient or requiring improved aging compensation; BQ27Z561YPHR remains optimal for cost-sensitive consumer applications. |
Compared with BQ27Z561DWR, the BQ27Z561YPHR offers 4.4× smaller footprint and better thermal coupling to PCB, while versus BQ27Z562YPHR it trades minor accuracy/temperature margin for lower unit cost and mature qualification status in high-volume consumer programs.
Availability
BQ27Z561YPHR is available at Aetrix Electronics and suitable for smartphones, portable health monitors, and tablet computing applications requiring stable component supply, long-term lifecycle support, and consistent manufacturing traceability.
Supply support for BQ27Z561YPHR 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 leadership in battery management systems.
The BQ27Z561YPHR belongs to TI's Impedance Track™ fuel gauge product line, engineered specifically for high-accuracy, low-power, secure state-of-charge estimation in space-constrained, single-cell Li-ion battery packs used in premium portable electronics.
FAQ
What communication interfaces does the BQ27Z561YPHR support?
The BQ27Z561YPHR supports both 400kHz I²C and HDQ one-wire communication protocols. These interfaces are mutually exclusive - once configured for HDQ mode via firmware, the device cannot revert to I²C. The SDA/HDQ pin serves both functions, while SCL is dedicated to I²C. Host systems must select the interface during initial setup based on pin count and protocol requirements.
How does the BQ27Z561YPHR achieve accurate state-of-charge estimation?
The BQ27Z561YPHR achieves ±1% state-of-charge accuracy using TI's Impedance Track™ algorithm, which models battery impedance in real time by synchronously sampling voltage, current (via SRP/SRN), and temperature (internal or external NTC via TS). Dual independent ADCs enable simultaneous acquisition, and flash-programmable firmware allows algorithm updates to adapt to cell aging and usage patterns over the battery's lifetime.
What is the minimum sense resistor value supported by the BQ27Z561YPHR?
The BQ27Z561YPHR supports current sense resistors as low as 1mΩ, enabled by its high-resolution integrating coulomb counter ADC with <1µV typical input offset error and ±100mV differential input range. This allows accurate current measurement in high-current applications (e.g., >5A peak) while minimizing power loss and thermal impact in compact battery packs.
Does the BQ27Z561YPHR include built-in security features?
Yes, the BQ27Z561YPHR integrates hardware-accelerated SHA-256 authentication as a responder. Before granting full register access or allowing unseal commands, the device requires successful SHA-256 challenge-response verification from the host system. This prevents counterfeit or unauthorized battery packs from operating with certified host devices, enhancing end-product safety and brand integrity.
What are the power consumption characteristics of the BQ27Z561YPHR in low-power modes?
The BQ27Z561YPHR offers three low-power operating modes: SLEEP mode draws <11µA while maintaining periodic coulomb counting; DEEP SLEEP draws <9µA with user-defined read intervals; and OFF mode draws <1.9µA when CE is pulled low, disabling the internal 1.8V LDO. All modes preserve non-volatile memory contents and allow fast wake-up for host-triggered measurements.
BQ27Z561YPHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Impedance Track™
- Package/Case:
- 12-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Fuel Gauge
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Fault Protection:
- -
- Interface:
- HDQ, I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DSBGA (1.68x2.05)
BQ27Z561YPHR FAQ
1.How can I place an order for BQ27Z561YPHR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ27Z561YPHR 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 BQ27Z561YPHR reliable?
The price and inventory of BQ27Z561YPHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ27Z561YPHR is usually 5 days.
3.What payment methods are accepted for BQ27Z561YPHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ27Z561YPHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ27Z561YPHR?
BQ27Z561YPHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ27Z561YPHR 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 BQ27Z561YPHR?
For technical support, including BQ27Z561YPHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ27Z561YPHR requirements.
6.How does Aetrix verify that BQ27Z561YPHR is sourced from the original manufacturer or authorized distributors?
All BQ27Z561YPHR 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 BQ27Z561YPHR meets industry standards.
7.What is the process for return or replacement of BQ27Z561YPHR?
All BQ27Z561YPHR units undergo pre-shipment inspection (PSI). If there is an issue with BQ27Z561YPHR, 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 BQ27Z561YPHR part is unused and in its original packaging.
Return procedure for BQ27Z561YPHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ27Z561YPHR 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…
