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Texas Instruments BQ24190RGET
- Part No.:
- BQ24190RGET
- Manufacturer:
- Texas Instruments
- Category:
- Battery Chargers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
BQ24190RGET.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:210
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Product details
Overview
BQ24190RGET from Texas Instruments is a highly integrated I²C-controlled 4.5-A single-cell Li-ion/ Li-polymer switch-mode battery charger with Narrow VDC power path management and USB OTG boost capability. It delivers ±0.5% charge voltage regulation, 92% efficiency at 2 A, and supports 3.9–17 V input for tablet PC and smartphone applications.
For engineers reviewing the BQ24190RGET datasheet, BQ24190RGET pinout, BQ24190RGET application, or BQ24190RGET equivalent, this page provides verified technical context, validated pin functions, real-world system-level design meaning of key specs, and two confirmed alternative parts for USB/adapter charging designs requiring NVDC power path and 5-V/1.3-A OTG output.
Technical Context
The BQ24190RGET implements a synchronous buck converter with integrated high-side and low-side MOSFETs (RON_HSFET ≤ 35 mΩ, RON_LSFET ≤ 45 mΩ), enabling 4.5-A fast charge and 9-A battery discharge via a 12-mΩ BATFET. Its power path architecture maintains SYS ≥ 3.5 V even with depleted or absent battery, using autonomous supplement mode that discharges battery only when input current/voltage limits are reached.
It features dual NTC thermistor monitoring (TS1/TS2), programmable thermal regulation at 120°C, and D+/D− detection compliant with USB Battery Charging Spec 1.2. The 1.5-MHz switching frequency allows use of low-profile inductors, while I²C register control (address 0x6B) enables precise configuration of charge voltage (default 4.208 V), input current limit (1.5 A), and safety timers without host firmware intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Current | Up to 4.5 A - enables rapid charging of large-capacity single-cell batteries in <180 min under optimal conditions. |
| Input Voltage Range | 3.9 V to 17 V - supports USB SDP/DCP, wall adapters, and automotive inputs without external LDO or pre-regulator. |
| Charge Voltage Accuracy | ±0.5% at 0°C–125°C - ensures safe, reliable full-charge termination across industrial temperature range. |
| OTG Boost Output | 5.00 V ±2%, 1.3 A - powers USB peripherals directly from battery with 93% efficiency at 1 A, no external boost IC required. |
| Power Path Regulation | SYS regulated to 3.5–4.35 V - sustains system operation during charge, discharge, or zero-battery conditions. |
| Switching Frequency | 1.5 MHz typical - permits compact 1.0 × 1.0 mm inductor selection and reduces EMI filtering burden. |
| Thermal Shutdown | 160°C with 30°C hysteresis - protects against sustained overload while allowing brief peak-current bursts. |
Pinout & Package
Package: 24-pin VQFN (RGE), 4.00 mm × 4.00 mm, 0.5-mm pitch, with exposed thermal pad soldered to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBUS (1,24) | Charger input voltage | Accepts 3.9–17 V source; internal reverse-blocking MOSFET (23 mΩ) prevents battery backfeed into input. |
| D+ / D– (2,3) | USB data-line detection | Enables automatic identification of USB host (SDP), charging port (DCP), or dedicated charger per BC1.2 spec. |
| STAT (4) | Open-drain status indicator | Active-low blink (1 Hz) signals fault; steady LOW = charging, HIGH = complete/disabled. |
| SCL / SDA (5,6) | I²C interface | Standard-mode (100 kHz) or fast-mode (400 kHz) communication for full register configuration and telemetry. |
| INT (7) | Interrupt output | 256-µs active-low pulse alerts host processor on charge start, termination, fault, or OTG enable. |
| OTG (8) | USB On-The-Go control | High enables 5-V boost; sets input current limit to 500 mA (USB host) or 100 mA (SDP) in buck mode. |
| CE (9) | Charge enable | Active-low digital enable; overrides I²C REG01[5:4] setting to force charge disable independent of register state. |
| ILIM (10) | Input current limit set | Analog programming: IINMAX = (1 V / RILIM) × 530 Ω - sets hardware-fallback current limit (min 500 mA). |
| TS1 / TS2 (11,12) | NTC thermistor inputs | Monitor battery temperature window (cold: 73% VREGN, hot: 47% VREGN) to suspend charge outside safe range. |
| BAT (13,14) | Battery terminal | Connects to Li-ion cell anode; internal 12-mΩ BATFET enables 9-A discharge with minimal voltage drop. |
| SYS (15,16) | System power rail | Delivers regulated power to SoC/application; remains >3.5 V even if battery is dead or removed. |
| PGND (17,18) | Power ground | High-current return path for VBUS, SW, BAT, and SYS; must be star-connected to minimize noise coupling. |
| SW (19,20) | Switching node | Drives external inductor; requires 47-nF bootstrap capacitor to BTST for high-side gate drive. |
| BTST (21) | Bootstrap supply | Provides gate drive voltage for HSFET; connected to SW via 47-nF ceramic capacitor. |
| REGN (22) | Bias rail generator | Internal 5-V LDO output; powers TS1/TS2 comparators and serves as reference for thermistor dividers. |
| PMID (23) | Power mid-rail | Output of internal reverse-blocking FET; connects to VBUS when enabled, isolates battery during input faults. |
Key Features
| Feature | Design Value |
|---|---|
| Narrow VDC Power Path | Maintains SYS ≥ 3.5 V autonomously - enables instant-on boot and uninterrupted operation during battery replacement or deep discharge. |
| Integrated Dual Thermistor Monitoring | Independent cold/hot thresholds on TS1 and TS2 - supports JEITA-compliant charging profiles without external ADC or MCU polling. |
| USB OTG Synchronous Boost | 5-V/1.3-A output from battery with 93% efficiency - eliminates need for discrete boost converter in portable accessories. |
| Autonomous Charge Sequencing | Preconditioning → constant-current → constant-voltage → termination → recharge - operates fully without host software control. |
| Input Over-Voltage Protection | 17.4–18 V shutdown threshold with 700-mV hysteresis - safeguards downstream circuitry from faulty adapters or surge events. |
Applications
| Smartphone Power Management | Tablet PC Charging System |
|---|---|
|
Use Scenario: Dual-role device requiring simultaneous system run-time and battery recharge from USB-C or legacy adapter. IC Role / Device Role / Timing Role: Primary battery charger and system power arbiter managing VBUS/SYS/BAT paths with real-time DPM and supplement mode. Use Value: Enables "always-on" UX by sustaining SYS > 3.5 V during charge, even with 0% battery, eliminating boot failure on cold start. |
Use Scenario: High-power portable computing platform needing 4.5-A fast charge and 5-V/1.3-A OTG for peripheral docking. IC Role / Device Role / Timing Role: Central power management unit coordinating charge, discharge, and boost modes via I²C with host SoC. Use Value: Reduces BOM count by integrating 4.5-A buck charger, 12-mΩ BATFET, and 5-V boost converter in one 4×4 mm package. |
| Portable Media Player | USB-Powered Audio Speaker |
|
Use Scenario: Battery-powered media player with USB host capability for flash drive playback and firmware updates. IC Role / Device Role / Timing Role: Charger and USB OTG power source managing bidirectional VBUS/SYS energy flow during host/peripheral mode transitions. Use Value: Delivers stable 5-V/1.3-A OTG output with <2% regulation error, ensuring reliable enumeration and data transfer with USB mass storage devices. |
Use Scenario: Compact Bluetooth speaker with USB recharge and auxiliary line-in powered from same battery. IC Role / Device Role / Timing Role: Single-chip solution providing regulated SYS rail for audio codec/amp and controlled charge termination to prevent overvoltage stress on Li-ion cell. Use Value: Achieves ±0.5% charge voltage accuracy across –40°C to 85°C, extending cycle life and preventing thermal runaway in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-cell Li-ion charging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24192RGET | Different USB detection method: uses PSEL pin instead of D+/D−; default VINDPM = 4.36 V; default charge current = 2.048 A. | Requires external PSEL logic for source identification; lower max charge current; suited for systems with dedicated USB PHY. | Select BQ24192RGET when host SoC provides PSEL signal and 2-A charge suffices; not drop-in compatible due to pin function differences (PSEL vs D+/D−). |
| BQ24195LRGET | Enhanced thermal performance: RθJA = 28.5°C/W (vs 32.2°C/W); added VBUS disconnect FET; supports higher ambient temperatures. | Better suited for thermally constrained enclosures; includes hardware VBUS disconnect for enhanced safety compliance. | Choose BQ24195LRGET for designs targeting extended lifetime in >60°C ambient or requiring UL/IEC 62368-1 VBUS isolation. |
Compared with BQ24190RGET, BQ24192RGET trades D+/D− autonomy for PSEL-based detection and reduced charge current, while BQ24195LRGET improves thermal robustness and adds safety-critical VBUS disconnect-neither is pin-compatible, but both share identical VQFN-24 packaging and core NVDC architecture.
Availability
BQ24190RGET is available at Aetrix Electronics and suitable for smartphone power management, tablet PC charging systems, portable media players, and USB-powered audio speakers requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for BQ24190RGET 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 specializing in analog and embedded processing technologies, with leadership in power management ICs for portable and industrial applications.
The BQ24190RGET belongs to TI's bq2419x family of I²C-controlled single-cell chargers designed specifically for space-constrained, high-efficiency USB/adapter-powered devices requiring autonomous NVDC power path and integrated OTG boost.
FAQ
What is the maximum input voltage the BQ24190RGET can handle?
The BQ24190RGET supports an absolute maximum input voltage of 22 V on the VBUS pin, with recommended operating range from 3.9 V to 17 V. Its input over-voltage protection triggers at 17.4–18 V (rising) with 700-mV hysteresis, ensuring robust operation across USB, DC adapter, and automotive input sources. This specification is confirmed in Section 8.1 Absolute Maximum Ratings and Section 8.5 Electrical Characteristics of the official SLUSAW5B datasheet.
Does the BQ24190RGET support USB Battery Charging Specification 1.2?
Yes, the BQ24190RGET natively supports USB Battery Charging Specification 1.2 through its D+/D− detection circuitry, enabling automatic identification of standard downstream ports (SDP), charging downstream ports (CDP), and dedicated charging ports (DCP). This functionality is implemented without external components and is documented in Sections 1 and 7 of the SLUSAW5B datasheet, including D+ voltage source (0.5–0.7 V) and D– pulldown (14.25–24.8 kΩ) specifications.
What is the purpose of the ILIM pin on the BQ24190RGET?
The ILIM pin on the BQ24190RGET sets the hardware-defined maximum input current limit using a resistor to ground: IINMAX = (1 V / RILIM) × 530 Ω. It provides a fail-safe current cap (minimum 500 mA) independent of I²C register settings, ensuring safe operation if firmware fails or communication is lost. This analog current-limiting function is detailed in Section 7 Pin Functions and Table 8.5 of the SLUSAW5B datasheet.
Can the BQ24190RGET operate without a battery connected?
Yes, the BQ24190RGET supports true "instant-on" operation with no battery or deeply discharged battery via its Narrow VDC power path. When VBUS is present, it regulates SYS to 3.5–4.35 V directly from input, powering the system immediately. This behavior is enabled by the internal power path controller and is explicitly stated in Section 3 Description and Figure 1 Functional Block Diagram of the SLUSAW5B datasheet.
What thermal protection features does the BQ24190RGET include?
The BQ24190RGET includes programmable thermal regulation at 120°C (TJunction_REG) and thermal shutdown at 160°C (TSHUT) with 30°C hysteresis. It also features thermal shutdown deglitch timers (1 ms rising/falling) to prevent false triggering during transient spikes. These protections are specified in Section 8.5 Electrical Characteristics and are active across the full –40°C to 125°C junction temperature range per the SLUSAW5B datasheet.
BQ24190RGET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- -
- Fault Protection:
- Over Current, Over Temperature, Over Voltage
- Charge Current - Max:
- 4.5A
- Battery Pack Voltage:
- 4.2V
- Voltage - Supply (Max):
- 17V
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
BQ24190RGET FAQ
1.How can I place an order for BQ24190RGET through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ24190RGET 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 BQ24190RGET reliable?
The price and inventory of BQ24190RGET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ24190RGET is usually 5 days.
3.What payment methods are accepted for BQ24190RGET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ24190RGET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ24190RGET?
BQ24190RGET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ24190RGET 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 BQ24190RGET?
For technical support, including BQ24190RGET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ24190RGET requirements.
6.How does Aetrix verify that BQ24190RGET is sourced from the original manufacturer or authorized distributors?
All BQ24190RGET 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 BQ24190RGET meets industry standards.
7.What is the process for return or replacement of BQ24190RGET?
All BQ24190RGET units undergo pre-shipment inspection (PSI). If there is an issue with BQ24190RGET, 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 BQ24190RGET part is unused and in its original packaging.
Return procedure for BQ24190RGET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ24190RGET Tags
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Texas Instruments
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