Produktdetails

Number of series cells 1 Charge current (max) (A) 3 Vin (max) (V) 6.2 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44 Absolute max Vin (max) (V) 15 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, USB OTG integrated Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 3 Vin (max) (V) 6.2 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44 Absolute max Vin (max) (V) 15 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, USB OTG integrated Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGE) 24 16 mm² 4 x 4
  • 90% High efficiency Switch Mode 3-A charger
  • 3.9-V to 6.2-V Single input USB-compliant charger with 6.4-V overvoltage protection
    • USB Host or charging port D+/D- detection compatible to USB battery charger spec (BC1.2)
    • Supports nonstandard 2-A/1-A adapters detection (BQ24297)
    • Input voltage and current limit supports USB 2.0 and USB 3.0
    • Input current limit: 100 mA, 150 mA, 500 mA, 900 mA, 1 A, 1.5 A, 2 A, and 3 A
  • USB OTG with adjustable output 4.55 V to 5.5 V at 1 A or 1.5 A
    • Fast OTG startup (22 ms typ)
    • 90% 5-V Boost Mode efficiency
    • Accurate ±15% Hiccup Mode overcurrent protection
  • Narrow VDC (NVDC) power path management
    • Instant system on with no battery or deeply discharged battery
    • Ideal diode operation in Battery Supplement Mode
  • 1.5-MHz Switching frequency for low profile 1.2-mm inductor
  • I 2C Port for optimal system performance and status reporting
  • Autonomous battery charging with or without host management
    • Battery charge enable and preconditioning
    • Charge termination and recharge
  • High Accuracy
    • ±0.5% Charge voltage regulation
    • ±7% Charge current regulation
    • ±7.5% Input current regulation
    • ±3% Output voltage regulation in USB OTG Boost Mode
  • High Integration
    • Power path management
    • Synchronous switching MOSFETs
    • Integrated current sensing
    • Bootstrap diode
    • Internal loop compensation
  • Safety
    • Battery temperature sensing for charging and discharging in OTG Mode
    • Battery charging safety timer
    • Thermal regulation and thermal shutdown
    • Input and system overvoltage protection
    • MOSFET Over-current protection
  • Charge status outputs for LED or host processor
  • Maximum power tracking capability by input voltage regulation
  • 20-µA Low battery leakage current and support Shipping Mode
  • 4.00-mm x 4.00-mm VQFN-24 package
  • Safety-Related Certifications:
    • TUV IEC 62368 Certification (BQ24297)
  • 90% High efficiency Switch Mode 3-A charger
  • 3.9-V to 6.2-V Single input USB-compliant charger with 6.4-V overvoltage protection
    • USB Host or charging port D+/D- detection compatible to USB battery charger spec (BC1.2)
    • Supports nonstandard 2-A/1-A adapters detection (BQ24297)
    • Input voltage and current limit supports USB 2.0 and USB 3.0
    • Input current limit: 100 mA, 150 mA, 500 mA, 900 mA, 1 A, 1.5 A, 2 A, and 3 A
  • USB OTG with adjustable output 4.55 V to 5.5 V at 1 A or 1.5 A
    • Fast OTG startup (22 ms typ)
    • 90% 5-V Boost Mode efficiency
    • Accurate ±15% Hiccup Mode overcurrent protection
  • Narrow VDC (NVDC) power path management
    • Instant system on with no battery or deeply discharged battery
    • Ideal diode operation in Battery Supplement Mode
  • 1.5-MHz Switching frequency for low profile 1.2-mm inductor
  • I 2C Port for optimal system performance and status reporting
  • Autonomous battery charging with or without host management
    • Battery charge enable and preconditioning
    • Charge termination and recharge
  • High Accuracy
    • ±0.5% Charge voltage regulation
    • ±7% Charge current regulation
    • ±7.5% Input current regulation
    • ±3% Output voltage regulation in USB OTG Boost Mode
  • High Integration
    • Power path management
    • Synchronous switching MOSFETs
    • Integrated current sensing
    • Bootstrap diode
    • Internal loop compensation
  • Safety
    • Battery temperature sensing for charging and discharging in OTG Mode
    • Battery charging safety timer
    • Thermal regulation and thermal shutdown
    • Input and system overvoltage protection
    • MOSFET Over-current protection
  • Charge status outputs for LED or host processor
  • Maximum power tracking capability by input voltage regulation
  • 20-µA Low battery leakage current and support Shipping Mode
  • 4.00-mm x 4.00-mm VQFN-24 package
  • Safety-Related Certifications:
    • TUV IEC 62368 Certification (BQ24297)

The BQ24296/BQ24297 are highly-integrated switch-mode battery charge management and system power path management devices for 1 cell Li-Ion and Li-polymer batteries in a wide range of smart phone and tablet applications.

Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charge time and extends battery life during discharging phase. The I 2C serial interface with charging and system settings makes the device a truly flexible solution.

The device supports 3.9-V to 6.2-V USB input sources, including standard USB host port and USB charging port with 6.4-V over-voltage protection. The device is compliant with USB 2.0 and USB 3.0 power specifications with input current and voltage regulation. To set the default input current limit, the BQ24296 takes the result from the detection circuit in the system, such as USB PHY device and the BQ24297 detects the input source through D+/D- detection following the USB battery charging spec 1.2. In addition, the BQ24297 detects non-standard 2-A/1-A adapters. The device also supports USB On-the-Go operation by providing fast startup and supplying adjustable voltage 4.55-V to 5.5-V (default 5 V) on the VBUS with an accurate current limit up to 1.5 A.

The power path management regulates the system slightly above battery voltage but does not drop below 3.5-V minimum system voltage (programmable). With this feature, the system keeps operating even when the battery is completely depleted or removed. When the input source current or voltage limit is reached, the power path management automatically reduces the charge current to zero and then starts discharges the battery until the system power requirement is met. This supplement mode operation keeps the input source from getting overloaded.

The device initiates and completes a charging cycle when host control is not available. It automatically charges the battery in three phases: pre-conditioning, constant current, and constant voltage. In the end, the charger automatically terminates when the charge current is below a preset limit in the constant voltage phase. Later on, when the battery voltage falls below the recharge threshold, the charger automatically starts another charging cycle.

The charge device provides various safety features for battery charging and system operation, including negative thermistor monitoring, charging safety timer, and over-voltage/over-current protections. The thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable).

The STAT output reports the charging status and any fault conditions. The INT immediately notifies the host when a fault occurs.

The BQ24296 and BQ24297 are available in a 24-pin, 4.00 x 4.00 mm 2 thin VQFN package.

The BQ24296/BQ24297 are highly-integrated switch-mode battery charge management and system power path management devices for 1 cell Li-Ion and Li-polymer batteries in a wide range of smart phone and tablet applications.

Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charge time and extends battery life during discharging phase. The I 2C serial interface with charging and system settings makes the device a truly flexible solution.

The device supports 3.9-V to 6.2-V USB input sources, including standard USB host port and USB charging port with 6.4-V over-voltage protection. The device is compliant with USB 2.0 and USB 3.0 power specifications with input current and voltage regulation. To set the default input current limit, the BQ24296 takes the result from the detection circuit in the system, such as USB PHY device and the BQ24297 detects the input source through D+/D- detection following the USB battery charging spec 1.2. In addition, the BQ24297 detects non-standard 2-A/1-A adapters. The device also supports USB On-the-Go operation by providing fast startup and supplying adjustable voltage 4.55-V to 5.5-V (default 5 V) on the VBUS with an accurate current limit up to 1.5 A.

The power path management regulates the system slightly above battery voltage but does not drop below 3.5-V minimum system voltage (programmable). With this feature, the system keeps operating even when the battery is completely depleted or removed. When the input source current or voltage limit is reached, the power path management automatically reduces the charge current to zero and then starts discharges the battery until the system power requirement is met. This supplement mode operation keeps the input source from getting overloaded.

The device initiates and completes a charging cycle when host control is not available. It automatically charges the battery in three phases: pre-conditioning, constant current, and constant voltage. In the end, the charger automatically terminates when the charge current is below a preset limit in the constant voltage phase. Later on, when the battery voltage falls below the recharge threshold, the charger automatically starts another charging cycle.

The charge device provides various safety features for battery charging and system operation, including negative thermistor monitoring, charging safety timer, and over-voltage/over-current protections. The thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable).

The STAT output reports the charging status and any fault conditions. The INT immediately notifies the host when a fault occurs.

The BQ24296 and BQ24297 are available in a 24-pin, 4.00 x 4.00 mm 2 thin VQFN package.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet BQ2429x I2C Controlled 3-A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG datasheet (Rev. D) PDF | HTML 14 Apr 2023
Application note Selection of Single-Cell Buck Narrow VDC Switching Battery Chargers PDF | HTML 10 Nov 2022
Product overview Battery Management Solutions for Point of Sale Systems 18 Aug 2014
EVM User's guide bq24296 and bq24297 EVM (PWR021) User’s Guide 28 Aug 2013

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

BQ24296EVM-021 — I2C-gesteuertes, 3 A. Einzelzellen-USB-NVDC-1-Ladegerät mit einstellbarer Spannung USB OTG – Evaluie

I2C Controlled 2.5A Single Cell Charger with Narrow VDC Power Path Management; Default Setting (BATREG = 4.208, ICHG = 2.5A, VINDPM = 4.36V) and USB OTG

The BQ24296EVM-021 requires USB Interface Adaptive Evaluation Module “USB-TO-GPIO” for I2C interface. If one is not already available (...)

Benutzerhandbuch: PDF
Anwendungssoftware und Frameworks

TI-CHARGER-GUI — GUI-Software zur Verwendung mit Evaluierungsmodulen für USB2ANY und Akkuladung

Die TI-CHARGER-GUI bietet eine Web-basierte oder eigenständige grafische Benutzeroberfläche, welche Sie beim Evaluieren, Entwickeln mit, Konfigurieren oder Testen von Batterieladerprodukten unterstützt. Die Software stellt den vollen Zugriff auf Register und eine einfache Schnittstelle zum Senden (...)
Support-Software

SLUC495 bq24295, 96, 97 V0003 Setup Software

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
Batterielader-ICs
BQ24295 I2C-gesteuertes einzelliges 3-A-USB-Ladegerät mit einstellbarer Spannung und 1,5 A OTG BQ24296 Geregeltes Abwärtsladegerät mit 1 Zellen, 3 A, I2C mit einstellbarer Spannung und USB-OTG und Minima BQ24297 I2C-gesteuerter 1-Zellen-, 3-A-Batterielader mit USB NVDC-1, einstellbare Spannung und USB OTG mit D
Hardware-Entwicklung
Evaluierungsplatine
BQ24295EVM-549 I2C-gesteuertes 3 A-Einzelzellen-Ladegerät mit einstellbarer Spannung und 1,5 A-OTG – Evaluierungsmo BQ24296EVM-021 I2C-gesteuertes, 3 A. Einzelzellen-USB-NVDC-1-Ladegerät mit einstellbarer Spannung USB OTG – Evaluie BQ24297EVM-021 I2C-gesteuertes 3 A Einzelzellen-USB-NVDC-1-Ladegerät mit einstellbarer Spannung USB OTG – Evaluieru
Referenzdesigns

TIDA-00280 — I2C-gesteuerte Einzelzellen-Lader für USB NVDC 3 A mit synchronem OTG-Boost von 1,5 A

TIDA-00280 is an evaluation module for fully-integrated single-cell NVDC 3A charger bq24296/bq24297 with 1.5A synchronous boost operation. This board could be used to evaluate the performance of USB detection, the flexibility to change the charging profile and OTG operation. The two charger ICs are (...)
Test report: PDF
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
VQFN (RGE) 24 Ultra Librarian

Bestellen & Qualität

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  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

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