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Texas Instruments BQ27530YZFT-G1
- Part No.:
- BQ27530YZFT-G1
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 15-UFBGA, DSBGA
- Datasheet:
-
BQ27530YZFT-G1.pdf
- Description:
- IC BATT FUEL GAUGE LIION 15DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:521
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Product details
Overview
BQ27530YZFT-G1 from Texas Instruments is a system-side battery management unit (BMU) for single-cell Li-ion battery packs, integrating Impedance Track™ fuel gauging and autonomous charger control for bq2416x ICs. It delivers <1% state-of-charge (SOC) error, supports 5–20 mΩ sense resistors, operates from –40°C to +85°C, and interfaces via 400-kHz I²C. It is deployed in smartphones and tablets where accurate runtime-to-empty prediction and embedded battery safety are critical.
For engineers reviewing the BQ27530YZFT-G1 datasheet, BQ27530YZFT-G1 pinout, BQ27530YZFT-G1 application, or BQ27530YZFT-G1 equivalent, key selection criteria include its 15-ball DSBGA package, coulomb counter resolution (14–15 bits), integrated 2.5-V LDO, low-power sleep modes (down to 8 µA), and compatibility with TI's bq2416x charger family for closed-loop charging control.
Technical Context
The BQ27530YZFT-G1 implements a dual-oscillator architecture (8.389 MHz HFO + 32.768 kHz LFO) to support real-time coulomb counting and temperature-compensated impedance modeling. Its integrating ADC measures voltage across SRP/SRN with ±10 µV offset and 125-ms conversion time, while the 14-bit internal ADC handles TS and BAT inputs with 8 MΩ effective input resistance.
It executes TI's patented Impedance Track™ algorithm autonomously-requiring no host firmware intervention-to compute FullChargeCapacity(), StateOfCharge(), and runtime-to-empty based on dynamic cell impedance profiling, aging compensation, and temperature/rate inefficiency correction. The device resides on the system main board and controls bq2416x chargers via BSDA/BSCL signals without processor involvement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.45 V to 4.5 V - powers internal LDO and logic; supports operation down to low-battery conditions |
| I²C Clock Frequency | 400 kHz - enables fast host communication without requiring high-speed MCU peripherals |
| Coulomb Counter Resolution | 14–15 bits - provides sub-mAh capacity resolution for precise remaining capacity reporting |
| Sense Resistor Range | 5 mΩ to 20 mΩ - allows use of ultra-low-value shunts to minimize power loss and thermal drift |
| Operating Temperature | –40°C to +85°C - validated for consumer handheld and industrial embedded environments |
| Quiescent Current (Hibernate) | 8 µA - extends system standby time when battery is idle but monitored |
| ADC Input Offset (BAT/TS) | ±1 mV - ensures accuracy in voltage and thermistor measurements critical for OCV-based SOC |
Pinout & Package
Package: 15-pin DSBGA (YZF), body size 2.61 mm × 1.96 mm, 0.5 mm ball pitch - optimized for space-constrained mobile PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SRP / SRN | Coulomb counter analog inputs | Connect across 5–20 mΩ sense resistor between PACK– and system ground; enable high-accuracy current integration |
| VSS | Ground reference | Dual-ball connection (C1, C2) provides low-impedance return path for analog and digital domains |
| VCC | LDO output supply | 2.5-V regulated output powering internal circuitry; requires 0.47–1 µF ceramic decoupling to VSS |
| REGIN | LDO input supply | Accepts 2.8–4.5 V input; requires 0.1 µF ceramic capacitor to VSS for stability |
| SOC_INT | Open-drain interrupt output | Asserts on SOC threshold crossing or fault events; requires external pull-up to host rail |
| SCL / SDA | I²C interface lines | 400-kHz open-drain bus; require 10 kΩ pull-ups to VCC for proper timing compliance |
| BSDA / BSCL | bq2416x charger interface | Push-pull outputs that directly control charge voltage/current and status handshake with bq2416x ICs |
| TS | Thermistor voltage sense | ADC input for NTC thermistor (e.g., 103AT); used for temperature-dependent SOC and safety limits |
| BI/TOUT | Battery insertion detection | Provides bias and multiplexer control for thermistor network; requires >1 MΩ pull-up for detection logic |
Key Features
| Feature | Design Value |
|---|---|
| Impedance Track™ Algorithm | Delivers <1% SOC error across battery lifetime by modeling impedance changes due to aging, temperature, and load rate |
| Autonomous Charger Control | Directly manages bq2416x chargers via BSDA/BSCL without host CPU involvement-reducing firmware overhead and improving safety |
| Multi-Power Mode Operation | Supports NORMAL, SLEEP+, SLEEP, and HIBERNATE modes with currents from 118 µA down to 8 µA-enabling optimal power/runtime trade-offs |
| Integrated 2.5-V LDO | Regulates internal supply from 2.8–4.5 V REGIN input; eliminates need for external regulator in compact designs |
| Data Flash Retention | 10-year data retention and 20,000 write cycles for configuration storage-ensuring long-term calibration stability and field updates |
Applications
| Smartphone Power Management | Tablet Battery Safety System |
|---|---|
|
Use Scenario: Real-time battery state monitoring during video playback, GPS navigation, and background app activity. IC Role / Device Role / Timing Role: System-side fuel gauge and charger coordinator-measures current, voltage, and temperature to compute runtime-to-empty and trigger bq2416x charge termination. Use Value: Enables accurate % battery display and prevents over-discharge by enforcing terminate voltage at 3.0 V with <1% SOC error. |
Use Scenario: Embedded non-removable battery management during multi-hour screen-on usage with thermal throttling. IC Role / Device Role / Timing Role: Autonomous battery health monitor-tracks Qmax degradation and adjusts FullChargeCapacity() using Impedance Track™ profiling. Use Value: Extends usable battery life by 12–18 months through adaptive charging profiles based on State-of-Health (SOH) estimation. |
| Handheld Terminal Runtime Optimization | Digital Camera Battery Calibration |
|
Use Scenario: Intermittent barcode scanning with frequent wake/sleep cycles in warehouse environments. IC Role / Device Role / Timing Role: Low-power coulomb counter-enters HIBERNATE mode (8 µA) between scans and wakes on SOC_INT assertion. Use Value: Achieves 30+ days of standby time by minimizing quiescent current while maintaining accurate capacity tracking. |
Use Scenario: High-current burst discharge during flash photography and video recording. IC Role / Device Role / Timing Role: Dynamic impedance compensator-measures OCV under load to correct SOC during rapid discharge transients. Use Value: Eliminates "sudden shutdown" by reporting true remaining capacity even at 2C discharge rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery fuel gauging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ27426YZFT | Lower-cost variant with reduced flash memory (1 kB vs. 2 kB), no MaxLife™ adaptive charging, and no BSDA/BSCL charger interface | Requires host MCU to manage charging; suitable only for systems using non-TI chargers or software-controlled charge profiles | Select when autonomous bq2416x control is unnecessary and cost sensitivity outweighs SOH-based charging benefits |
| BQ27541YZFT-G1 | Enhanced version with extended temperature range (–40°C to +95°C), improved ADC linearity (±0.5% vs. ±1%), and added SHA-1 authentication for secure battery authentication | Required for automotive infotainment or medical devices needing extended thermal margin and cryptographic security | Select when operating above 85°C or when OEM requires tamper-proof battery identification and firmware integrity checks |
Compared with BQ27530YZFT-G1, BQ27426YZFT sacrifices autonomous charger control and aging compensation for lower BOM cost, while BQ27541YZFT-G1 adds thermal headroom and security features at higher complexity-making BQ27530YZFT-G1 the optimal balance for mainstream consumer portable electronics.
Availability
BQ27530YZFT-G1 is available at Aetrix Electronics and suitable for smartphone power management, tablet battery safety systems, and handheld terminal runtime optimization requiring stable component supply and long-term lifecycle support.
Supply support for BQ27530YZFT-G1 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 innovation.
The BQ27530YZFT-G1 belongs to TI's Impedance Track™ fuel gauge product line, designed specifically for high-accuracy, autonomous single-cell Li-ion battery management in space-constrained portable electronics.
FAQ
What is the primary function of the BQ27530YZFT-G1 in a battery management system?
The BQ27530YZFT-G1 serves as a system-side battery management unit that performs high-accuracy fuel gauging using TI's Impedance Track™ algorithm and autonomously controls bq2416x charger ICs. It reports remaining capacity, state-of-charge, runtime-to-empty, and state-of-health while operating independently of the host processor-reducing firmware burden and enhancing safety in smartphones and tablets.
Does the BQ27530YZFT-G1 require an external microcontroller to operate?
No-the BQ27530YZFT-G1 is designed for host-free autonomous operation. It executes Impedance Track™ calculations, manages power modes (including HIBERNATE at 8 µA), and controls bq2416x chargers via BSDA/BSCL without host intervention. A microcontroller is only needed for initial configuration or optional runtime queries via I²C.
What is the recommended sense resistor value for the BQ27530YZFT-G1?
The BQ27530YZFT-G1 is specified for use with 5 mΩ to 20 mΩ sense resistors connected between SRP and SRN. A 10 mΩ resistor is commonly selected to balance measurement resolution (1 µV LSB at 10 mΩ = 0.1 mA resolution) and power dissipation (<10 mW at 1 A).
Can the BQ27530YZFT-G1 be used with battery chargers other than the bq2416x family?
Yes-the BQ27530YZFT-G1 can provide charge voltage and current recommendations to any host-controlled charger via I²C commands like ChargeVoltage() and ChargeCurrent(). However, its native BSDA/BSCL interface and autonomous charging features are exclusive to the bq2416x series.
How does the BQ27530YZFT-G1 handle battery temperature sensing?
The BQ27530YZFT-G1 supports both external NTC thermistors (e.g., 103AT-type with 10 kΩ @ 25°C) via TS and BI/TOUT pins and its internal temperature sensor. External sensing is preferred for pack-level accuracy; the device uses temperature data to correct SOC, adjust charge profiles, and enforce thermal safety limits per JEITA standards.
BQ27530YZFT-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Impedance Track™
- Package/Case:
- 15-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 1
- Fault Protection:
- -
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 15-DSBGA
BQ27530YZFT-G1 FAQ
1.How can I place an order for BQ27530YZFT-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ27530YZFT-G1 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 BQ27530YZFT-G1 reliable?
The price and inventory of BQ27530YZFT-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ27530YZFT-G1 is usually 5 days.
3.What payment methods are accepted for BQ27530YZFT-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ27530YZFT-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ27530YZFT-G1?
BQ27530YZFT-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ27530YZFT-G1 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 BQ27530YZFT-G1?
For technical support, including BQ27530YZFT-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ27530YZFT-G1 requirements.
6.How does Aetrix verify that BQ27530YZFT-G1 is sourced from the original manufacturer or authorized distributors?
All BQ27530YZFT-G1 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 BQ27530YZFT-G1 meets industry standards.
7.What is the process for return or replacement of BQ27530YZFT-G1?
All BQ27530YZFT-G1 units undergo pre-shipment inspection (PSI). If there is an issue with BQ27530YZFT-G1, 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 BQ27530YZFT-G1 part is unused and in its original packaging.
Return procedure for BQ27530YZFT-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ27530YZFT-G1 Tags
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Texas Instruments
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