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Texas Instruments BQ26200PWG4
- Part No.:
- BQ26200PWG4
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
BQ26200PWG4.pdf
- Description:
- IC BAT MON MULT-CHEM 1-4C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,646
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Product details
Overview
BQ26200PWG4 from Texas Instruments is a multifunction battery monitoring IC designed for integration into rechargeable Li-ion/Li-polymer and Ni-based battery packs. It performs high-accuracy coulometric charge/discharge current integration (3.05 µV/LSB resolution), provides on-die temperature sensing (±3 K accuracy), and delivers state-of-charge data to host controllers in portable electronics such as smartphones and PDAs.
For engineers reviewing the BQ26200PWG4 datasheet, BQ26200PWG4 pinout, BQ26200PWG4 application, or BQ26200PWG4 equivalent, key selection considerations include its single-wire HDQ interface, 8-pin TSSOP package, <2 µA sleep current, integrated timebase eliminating external crystal, and flash-backed RAM for non-volatile battery parameter storage during deep discharge.
Technical Context
The BQ26200PWG4 implements a voltage-to-frequency converter (VFC) architecture with auto-compensated offset (−17.7 to +12.5 µV), enabling precise integration of differential sense voltage (±100 mV range) across SRP/SRN. Its internal 1.138 counts/s timer drives 16-bit CTC/DTC counters with rollover detection and rate scaling.
It operates from 2.8 V to 5.5 V, supports direct single-cell Li-ion or multi-cell Ni-chemistry supply, and uses REG pin output (4.75 V nominal) to drive an external N-JFET for regulated auxiliary power - active even in sleep mode unless disabled via DISREG bit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.8 V to 5.5 V - enables direct operation from single Li-ion or 3–4 Ni-cell stacks without external regulator |
| Operating Current | <95 µA at 4.3 V - minimizes parasitic drain on battery during active monitoring |
| Sleep Current | <2 µA - preserves battery capacity during long-term storage while maintaining self-discharge tracking |
| Current Sense Range | ±100 mV differential input - supports typical 20 mΩ sense resistors with ±5 A full-scale measurement |
| VFC Resolution | 3.05 µV/LSB - enables sub-milliampere current resolution over extended integration periods |
| Temperature Accuracy | ±3 K from −20°C to 70°C - allows reliable self-discharge modeling without external thermistor |
| Memory Resources | 32 B RAM + 96 B Flash (incl. 32 B shadow) + 8 B ID ROM - stores calibrated chemistry data, serial number, and usage history across power loss |
Pinout & Package
Package: 8-pin TSSOP (PW), 3.0 mm × 4.4 mm, 0.65 mm pitch, moisture sensitivity level 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HDQ | Single-wire bidirectional I/O | Carries register read/write commands and data using asynchronous return-to-one protocol at ≤5 kbps |
| OSC | Oscillator current source output | Sets internal timebase frequency via external resistor; enables crystal-free timing with ±3% accuracy |
| REG | Regulator amplifier output | Drives external N-JFET to generate stable 4.75 V supply for host or peripherals; remains active in sleep |
| SRP / SRN | Differential current sense inputs | Measure voltage drop across series sense resistor; polarity determines charge (+) vs. discharge (−) counting |
| STAT | Open-drain status output | Configurable general-purpose output controlled via HDQ; supports system-level fault signaling or LED control |
| VCC | Power supply input | Accepts 2.8–5.5 V; powers all internal circuitry including VFC, RAM, and HDQ transceiver |
| VSS | Ground reference | Common return path for sense inputs, digital I/O, and internal bias networks |
Key Features
| Feature | Design Value |
|---|---|
| Auto-calibrating VFC | Continuous offset compensation eliminates need for host-initiated calibration cycles or factory trimming |
| Flash-backed RAM | 32 bytes of RAM shadowed by flash retain critical battery parameters (e.g., cycle count, SOC history) during short-circuit or deep discharge |
| Integrated temperature sensor | On-die thermal measurement enables accurate self-discharge modeling (doubling rate per +10°C above 25°C) |
| HDQ single-wire interface | Reduces PCB routing complexity and connector pin count versus I²C/SPI; supports interrupt-driven or polled host communication |
| Low-power sleep mode | Sub-2 µA quiescent current with periodic wake-up for SCR maintenance ensures >1-year shelf-life tracking without external intervention |
Applications
| Smartphone Battery Pack | PDA Power Management |
|---|---|
|
Use Scenario: Real-time state-of-charge estimation and health monitoring in compact Li-ion battery modules. IC Role / Device Role / Timing Role: Coulometric gas gauge IC performing continuous current integration and temperature-compensated self-discharge accounting. Use Value: Enables accurate remaining runtime prediction and battery wear leveling without external crystal or thermistor, reducing BOM cost and board area. |
Use Scenario: Multi-chemistry support (Li-ion/NiMH) in legacy handheld devices requiring long-term storage reliability. IC Role / Device Role / Timing Role: Battery monitor IC managing charge termination, discharge logging, and low-power storage mode activation. Use Value: Flash memory retains pack identification and usage history across full discharge events, supporting warranty validation and field failure analysis. |
| Wearable Device Battery | Medical Portable Monitor |
|
Use Scenario: Ultra-low-power battery telemetry in size-constrained wearable electronics with intermittent host polling. IC Role / Device Role / Timing Role: Low-quiescent-current monitoring IC delivering SOC updates via HDQ only when requested by host MCU. Use Value: <2 µA sleep current extends shelf life and operational runtime; single-wire interface simplifies flex PCB routing in tight enclosures. |
Use Scenario: Critical battery status reporting in FDA-regulated portable medical equipment requiring traceable calibration data. IC Role / Device Role / Timing Role: Certified battery management component storing manufacturer ID, production date, and calibration coefficients in factory-programmed ID ROM and user flash. Use Value: 8-byte ID ROM and 64-byte user flash provide auditable, tamper-resistant storage of regulatory compliance metadata and usage logs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ26100PW | Same pinout and core functionality but lacks flash memory (only 32 B RAM); no non-volatile storage for battery history | Not suitable for applications requiring data retention after deep discharge or pack disconnection | Select BQ26100PW only when cost-sensitive designs omit long-term parameter logging and rely on host-side storage |
| BQ27200YZFT | Smaller 12-pin DSBGA package; adds integrated fuel-gauge algorithm engine and SMBus interface instead of HDQ | Requires different host firmware stack and layout; supports higher-accuracy SOC estimation via impedance tracking | Choose BQ27200YZFT when migrating to algorithmic fuel gauging and space-constrained layouts where HDQ is not preferred |
Compared with BQ26200PWG4, BQ26100PW sacrifices non-volatile memory for lower cost and simpler firmware, while BQ27200YZFT trades HDQ simplicity for advanced fuel-gauge computation and smaller footprint - neither offers identical flash-backed RAM + HDQ + TSSOP combination.
Availability
BQ26200PWG4 is available at Aetrix Electronics and suitable for smartphone battery packs, PDA power systems, and wearable device energy management requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for BQ26200PWG4 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 expertise in battery management solutions.
The BQ26200PWG4 belongs to TI's dedicated battery monitor IC product line, engineered specifically for cost-sensitive, space-constrained portable applications needing accurate coulometric tracking without external timing or sensing components.
FAQ
What is the primary function of the BQ26200PWG4 in a battery pack?
The BQ26200PWG4 serves as a coulometric gas gauge IC that measures charge and discharge currents via differential sense inputs (SRP/SRN), integrates them over time using an auto-calibrating voltage-to-frequency converter, and reports accumulated counts and temperature-corrected self-discharge data to a host controller via the HDQ interface. It does not perform charge control or protection functions.
Does the BQ26200PWG4 require an external crystal oscillator?
No, the BQ26200PWG4 does not require an external crystal oscillator. It features a high-accuracy internal timebase adjusted by an external resistor on the OSC pin, achieving ±3% timer accuracy without any crystal - a key design advantage for space- and cost-constrained battery packs.
How does the BQ26200PWG4 handle battery self-discharge during storage?
The BQ26200PWG4 uses its on-die temperature sensor to dynamically adjust the self-discharge count rate: it doubles every +10°C above 25°C (up to 16 counts/hour at >60°C) and halves every −10°C below 25°C (down to 1 count/8 hours below 0°C). This enables accurate shelf-life estimation without external thermal sensors.
What memory types are available on the BQ26200PWG4 and how are they used?
The BQ26200PWG4 provides 8 bytes of factory-programmed ID ROM (unique serial number), 32 bytes of flash-backed RAM (user-accessible volatile storage mirrored to flash), and 64 bytes of general-purpose flash (for chemistry data, manufacturing info, and calibration parameters). Data persists through power loss due to automatic RAM-to-flash transfer on command.
Can the BQ26200PWG4 operate directly from a single Li-ion cell?
Yes, the BQ26200PWG4 operates directly from a single Li-ion cell across its full voltage range (2.8 V to 5.5 V), including down to end-of-discharge. Its low operating current (<95 µA) and sleep current (<2 µA) ensure minimal impact on battery runtime and shelf life, making it ideal for portable Li-ion applications.
BQ26200PWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Function:
- Battery Monitor
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 1 ~ 4
- Fault Protection:
- -
- Interface:
- HDQ
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
BQ26200PWG4 FAQ
1.How can I place an order for BQ26200PWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ26200PWG4 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 BQ26200PWG4 reliable?
The price and inventory of BQ26200PWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ26200PWG4 is usually 5 days.
3.What payment methods are accepted for BQ26200PWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ26200PWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ26200PWG4?
BQ26200PWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ26200PWG4 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 BQ26200PWG4?
For technical support, including BQ26200PWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ26200PWG4 requirements.
6.How does Aetrix verify that BQ26200PWG4 is sourced from the original manufacturer or authorized distributors?
All BQ26200PWG4 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 BQ26200PWG4 meets industry standards.
7.What is the process for return or replacement of BQ26200PWG4?
All BQ26200PWG4 units undergo pre-shipment inspection (PSI). If there is an issue with BQ26200PWG4, 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 BQ26200PWG4 part is unused and in its original packaging.
Return procedure for BQ26200PWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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