My Inquiry
My Account
Texas Instruments BQ28Z560DRZR
- Part No.:
- BQ28Z560DRZR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- -
- Datasheet:
-
BQ28Z560DRZR.pdf
- Description:
- IC SUPERVISOR PWR SUP SUPPORT
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BQ28Z560DRZR from Texas Instruments is a single-cell Li-ion battery gas gauge IC with integrated protection and SHA-1/HMAC authentication. It performs real-time impedance-based state-of-charge estimation, monitors cell voltage (2.45–5.5 V), temperature (via TS pin or internal sensor), and current (±0.125 V differential input), and drives external N-channel FETs for charge/discharge control in tablet PCs, digital cameras, and handheld terminals.
For engineers reviewing the BQ28Z560DRZR datasheet, BQ28Z560DRZR pinout, BQ28Z560DRZR application, or BQ28Z560DRZR equivalent, key selection considerations include its 12-pin SON package, dual I²C/HDQ interface support, ±10 µV coulomb counter offset, 4.25 V overcharge detection threshold, and firmware-controlled discharge FET gate drive - all critical for secure, high-accuracy battery management in portable electronics.
Technical Context
The BQ28Z560DRZR integrates a 14-bit integrating delta-sigma ADC for coulomb counting (SRP/SRN inputs), a 14-bit ADC for cell voltage (BAT) and thermistor (TS), and dual oscillators - a 2.097 MHz high-frequency oscillator (±4.5% error over –40°C to 85°C) and a 32.768 kHz low-frequency oscillator (±4.0% error) - enabling precise timing for gauging and protection functions.
Its protection logic implements configurable thresholds and delays for overcharge (4.25 V det., 1 s delay), over-discharge (2.30 V det., 24 ms delay), short-circuit (VBAT–0.9 V det., 400 µs delay), and overcurrent (±0.15 V on SRP/SRN, 12 ms delay), with independent COUT/DOUT outputs driving external N-FETs and GPIO-configurable alert or CFET control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 2.45 V to 5.5 V on BAT pin - supports full Li-ion cell operating range without external LDO |
| Gas Gauging Algorithm | Impedance Track™ - delivers accurate SOC, remaining capacity, and runtime-to-empty using dynamic cell impedance modeling |
| Coulomb Counter Input | ±0.125 V differential (SRP–SRN), 14-bit resolution - enables use of 5–20 mΩ sense resistors with <10 µV offset |
| Protection Threshold Accuracy | VDET1 = 4.25 V ±25 mV (overcharge), VDET2 = 2.30 V ±80 mV (over-discharge) - ensures safe Li-ion voltage window enforcement |
| Communication Interfaces | I²C slave (100 kHz) or HDQ single-wire - provides flexible host connectivity with minimal PCB routing |
| Authentication | SHA-1/HMAC - secures battery pack identity against counterfeit cells in OEM systems |
| Package | 12-pin SON, 2.5 mm × 4.0 mm - compact footprint suitable for space-constrained battery packs |
Pinout & Package
12-pin SON package (2.5 mm × 4.0 mm, thermal pad on underside). Pin 13 is the exposed thermal pad, connected externally to VSS on PCB for thermal and electrical grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DOUT (Pin 1) | Discharge FET gate driver output | Drives low-side N-FET gate to interrupt discharge path during over-discharge or short-circuit |
| COUT (Pin 2) | Charge FET gate driver output | Drives low-side N-FET gate to interrupt charge path during overcharge or overcurrent charge |
| VM (Pin 3) | Analog input for protection sensing | Measures voltage drop across pack FETs to detect overcurrent and short-circuit conditions |
| BAT (Pin 4) | Cell voltage measurement input | Direct connection to cell anode for accurate voltage monitoring and gauging (2.45–5.5 V range) |
| VREG (Pin 5) | 2.5 V LDO output | Provides regulated 2.5 V supply for external circuitry; requires 0.1 µF ceramic capacitor to VSS |
| VSS (Pin 6) | Ground reference | Primary analog and digital ground; must connect to cell negative terminal, not sense resistor side |
| SRP (Pin 7) | Coulomb counter positive input | Connects near CELL– to measure current flow into/out of cell via differential sense resistor |
| SRN (Pin 8) | Coulomb counter negative input | Connects near PACKN to complete differential current sensing path with SRP |
| TS (Pin 9) | Thermistor voltage sense | ADC input for 10 kΩ NTC thermistor (e.g., Semitec 103AT); enables JEITA-compliant charging |
| SDA (Pin 10) | I²C data line / HDQ bidirectional | Open-drain interface supporting both I²C slave and HDQ single-wire protocols |
| SCL (Pin 11) | I²C clock input | Input-only clock line for I²C communication; not used in HDQ mode |
| GPIO (Pin 12) | Configurable I/O | Programmable as CFET control output, alert signal, or HDQ interface - enables system-level flexibility |
Key Features
| Feature | Design Value |
|---|---|
| Firmware-controlled discharge FET | Enables host MCU to dynamically manage discharge path via DOUT pin, supporting custom safety policies beyond hardware limits |
| SHA-1/HMAC battery authentication | Prevents unauthorized or counterfeit battery packs from operating in certified devices through cryptographic challenge-response |
| JEITA/Enhanced charging support | Uses TS input and internal temperature sensor to adjust charge parameters per JEITA standards, extending cycle life in varying ambient conditions |
| Integrated 2.5 V LDO (VREG) | Eliminates need for external regulator; delivers up to 16 mA with ±50 mV load regulation, powering external thermistors or level shifters |
| Low-power operation modes | Full sleep current ≤70 µA, hibernate ≤16 µA, shutdown ≤1 µA - preserves battery energy during idle periods |
Applications
| Tablet PC Battery Management | Digital Camera Power System |
|---|---|
Use Scenario: Real-time battery status reporting and safe charging/discharging in thin-profile consumer tablets. IC Role / Device Role / Timing Role: Gas gauge and protection controller; performs Impedance Track™ SOC calculation every second and enforces overvoltage/overcurrent limits within milliseconds. Use Value: Enables accurate runtime prediction and prevents field failures from overcharge or thermal runaway during rapid charging cycles. |
Use Scenario: High-reliability power monitoring in DSLR/mirrorless cameras with burst-mode recording and flash charging. IC Role / Device Role / Timing Role: Dual-role coulomb counter and protection supervisor; measures current during flash capacitor charging and cuts off discharge if voltage drops below 2.3 V. Use Value: Maintains consistent shot count estimation and avoids unexpected shutdown during video capture by detecting internal shorts and tab disconnections. |
| Handheld Terminal Power Pack | MP3/Multimedia Player Battery |
Use Scenario: Ruggedized industrial handhelds requiring secure, authenticated battery operation in logistics and field service. IC Role / Device Role / Timing Role: Secure battery manager; executes SHA-1/HMAC authentication at pack insertion and continuously monitors temperature via TS pin for JEITA compliance. Use Value: Ensures only OEM-approved batteries operate in mission-critical devices, while preventing overheating during extended barcode scanning sessions. |
Use Scenario: Compact audio players needing long playback time and reliable low-voltage cutoff to protect Li-ion cells from deep discharge. IC Role / Device Role / Timing Role: Precision gauging and protection IC; uses 14-bit ADCs to resolve sub-1% SOC changes and triggers DOUT-driven FET shutdown at 2.30 V ±80 mV. Use Value: Extends usable battery capacity by minimizing voltage hysteresis and guarantees ≥500 full cycles by enforcing strict over-discharge prevention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery gas gauge and protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ28Z610DRZR | Includes integrated 5-V charge pump for high-side FET control; adds SMBus Alert Response Address (ARA) support | Required for designs using high-side charge FETs or needing multi-gauge SMBus arbitration | Select BQ28Z610DRZR when high-side switching or ARA functionality is needed; otherwise BQ28Z560DRZR offers lower cost and identical gauging accuracy |
| BQ27426YZFT | Single-cell gauge only (no integrated protection FET drivers); smaller 10-pin YFF package; no SHA-1 authentication | Suitable for cost-sensitive applications where external protection IC is already present and security is not required | Choose BQ27426YZFT for simplified, lower-BOM-cost gauging where protection is handled separately and authentication is unnecessary |
Compared with BQ28Z560DRZR, BQ28Z610DRZR adds charge-pump-based high-side FET control and SMBus ARA, while BQ27426YZFT removes protection drivers and authentication to reduce size and cost - making BQ28Z560DRZR the optimal balance of integration, security, and footprint for mainstream portable Li-ion packs.
Availability
BQ28Z560DRZR is available at Aetrix Electronics and suitable for tablet PCs, digital cameras, handheld terminals, MP3 players, and slates requiring stable component supply, long-term lifecycle support, and traceable sourcing for consumer electronics production.
Supply support for BQ28Z560DRZR 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 solutions.
The BQ28Z560DRZR belongs to TI's Impedance Track™ gas gauge product line, designed specifically for secure, high-accuracy single-cell Li-ion battery monitoring and protection in portable consumer electronics.
FAQ
What communication interfaces does the BQ28Z560DRZR support?
The BQ28Z560DRZR supports two serial interfaces: I²C (SMBus-compatible, 100 kHz) and HDQ (single-wire, bi-directional). SDA serves as the shared data line for both; SCL is used only for I²C. The interface is selected at power-up based on external pull-up configuration, and the BQ28Z560DRZR operates exclusively as a slave device in either mode.
How does the BQ28Z560DRZR implement battery protection?
The BQ28Z560DRZR implements hardware-based protection via dedicated comparator circuits that monitor BAT voltage, VM differential voltage, and SRP/SRN current sense signals. It asserts COUT low to disable charge FETs during overcharge (4.25 V) and DOUT low to disable discharge FETs during over-discharge (2.30 V), short-circuit, or overcurrent - all with programmable delays and recovery thresholds.
What is the role of the VREG pin on the BQ28Z560DRZR?
The VREG pin on the BQ28Z560DRZR is the output of an internal 2.5 V LDO regulator, capable of supplying up to 16 mA. It powers external circuitry such as thermistor bias networks or level shifters, and requires a 0.1 µF ceramic capacitor to VSS for stability. Its output voltage remains within 2.45–2.55 V across load and line variations.
Can the BQ28Z560DRZR authenticate battery packs?
Yes, the BQ28Z560DRZR includes hardware-accelerated SHA-1/HMAC authentication logic. It securely verifies battery pack identity using a secret key stored in one-time-programmable memory, preventing counterfeit or non-OEM cells from operating in certified devices - a critical feature for branded portable electronics.
What is the recommended sense resistor value for the BQ28Z560DRZR coulomb counter?
The BQ28Z560DRZR coulomb counter accepts ±0.125 V differential input across SRP and SRN, so a 5–20 mΩ sense resistor is recommended. For example, a 10 mΩ resistor yields ±12.5 A full-scale current measurement with 14-bit resolution, balancing accuracy, power loss, and noise immunity in typical portable applications.
BQ28Z560DRZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Battery Chemistry:
- -
- Number of Cells:
- -
- Fault Protection:
- -
- Interface:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
BQ28Z560DRZR FAQ
1.How can I place an order for BQ28Z560DRZR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ28Z560DRZR 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 BQ28Z560DRZR reliable?
The price and inventory of BQ28Z560DRZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ28Z560DRZR is usually 5 days.
3.What payment methods are accepted for BQ28Z560DRZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ28Z560DRZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ28Z560DRZR?
BQ28Z560DRZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ28Z560DRZR 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 BQ28Z560DRZR?
For technical support, including BQ28Z560DRZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ28Z560DRZR requirements.
6.How does Aetrix verify that BQ28Z560DRZR is sourced from the original manufacturer or authorized distributors?
All BQ28Z560DRZR 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 BQ28Z560DRZR meets industry standards.
7.What is the process for return or replacement of BQ28Z560DRZR?
All BQ28Z560DRZR units undergo pre-shipment inspection (PSI). If there is an issue with BQ28Z560DRZR, 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 BQ28Z560DRZR part is unused and in its original packaging.
Return procedure for BQ28Z560DRZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ28Z560DRZR 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…
