BQ24151 Series
I2C 1cell 1.25A Buck battery charger with OTG and Automatic High Impedance Mode
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
I2C 1cell 1.25A Buck battery charger with OTG and Automatic High Impedance Mode
| Part | Charge Current - Max [Max] | Number of Cells | Operating Temperature [Max] | Operating Temperature [Min] | Package / Case | Interface | Current - Charging | Battery Chemistry | Programmable Features | Fault Protection | Supplier Device Package | Mounting Type | Voltage - Supply (Max) [Max] | Battery Pack Voltage | Secondary Attributes | Supplied Contents | Function | Primary Attributes | Utilized IC / Part | Embedded | Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24151YFFR | 1.25 A | 1 | 85 °C | -40 °C | 20-UFBGA, DSBGA | I2C | Constant | Lithium Ion/Polymer | Current, Timer, Voltage | Over Temperature, Over Voltage | 20-DSBGA | Surface Mount | 6 V | 4.44 V | |||||||
Texas Instruments BQ24151AYFFR | 1.25 A | 1 | 85 °C | -40 °C | 20-UFBGA, DSBGA | I2C | Constant - Programmable | Lithium Ion/Polymer | Current, Timer, Voltage | Over Temperature, Over Voltage | 20-DSBGA | Surface Mount | 6 V | 4.44 V | |||||||
Texas Instruments BQ24151AEVM | I2C Interface(s) | Board(s) | Battery Charger | Li-Ion / Li-Pol (1 Cell) | BQ24151A | Power Management | |||||||||||||||
Texas Instruments BQ24151AYFFT | 1.25 A | 1 | 85 °C | -40 °C | 20-UFBGA, DSBGA | I2C | Constant - Programmable | Lithium Ion/Polymer | Current, Timer, Voltage | Over Temperature, Over Voltage | 20-DSBGA | Surface Mount | 6 V | 4.44 V |
Key Features
• Charge Faster than Linear ChargersHigh-Accuracy Voltage and Current RegulationInput Current Regulation Accuracy: ±5% (100 mA and 500 mA)Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0°C to 125°C)Charge Current Regulation Accuracy: ±5%High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs20-V Absolute Maximum Input Voltage Rating6-V Maximum Operating Input VoltageBuilt-In Input Current Sensing and LimitingIntegrated Power FETs for Up To 1.25-A Charge RateProgrammable Charge Parameters through I2C Interface (up to 3.4 Mbps):Input CurrentFast-Charge/Termination CurrentCharge Voltage (3.5 V to 4.44 V)Safety TimerTermination EnableSynchronous Fixed-Frequency PWM Controller Operating at 3 MHz With 0% to 99.5% Duty CycleAutomatic High Impedance Mode for Low Power ConsumptionSafety Timer with Reset ControlReverse Leakage Protection Prevents Battery DrainageThermal Regulation and ProtectionInput/Output Overvoltage ProtectionStatus Output for Charging and FaultsUSB Friendly Boot-Up SequenceAutomatic Charging – bq24150Automatic High Impedance Mode – bq24151Boost Mode Operation for USB OTG:Input Voltage Range (from Battery): 2.5 V to 4.5 VOutput Voltage for VBUS: 5.05 V1.976 x 1.946mm 20-Pin WCSP PackageAPPLICATIONSMobile and Smart PhonesMP3 PlayersHandheld DevicesCharge Faster than Linear ChargersHigh-Accuracy Voltage and Current RegulationInput Current Regulation Accuracy: ±5% (100 mA and 500 mA)Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0°C to 125°C)Charge Current Regulation Accuracy: ±5%High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs20-V Absolute Maximum Input Voltage Rating6-V Maximum Operating Input VoltageBuilt-In Input Current Sensing and LimitingIntegrated Power FETs for Up To 1.25-A Charge RateProgrammable Charge Parameters through I2C Interface (up to 3.4 Mbps):Input CurrentFast-Charge/Termination CurrentCharge Voltage (3.5 V to 4.44 V)Safety TimerTermination EnableSynchronous Fixed-Frequency PWM Controller Operating at 3 MHz With 0% to 99.5% Duty CycleAutomatic High Impedance Mode for Low Power ConsumptionSafety Timer with Reset ControlReverse Leakage Protection Prevents Battery DrainageThermal Regulation and ProtectionInput/Output Overvoltage ProtectionStatus Output for Charging and FaultsUSB Friendly Boot-Up SequenceAutomatic Charging – bq24150Automatic High Impedance Mode – bq24151Boost Mode Operation for USB OTG:Input Voltage Range (from Battery): 2.5 V to 4.5 VOutput Voltage for VBUS: 5.05 V1.976 x 1.946mm 20-Pin WCSP PackageAPPLICATIONSMobile and Smart PhonesMP3 PlayersHandheld Devices
Description
AI
The bq24150/1 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The bq24150/1 integrates a synchronous PWM controller, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.
The bq24150/1 charges the battery in three phases: conditioning, constant current and constant voltage. The input current is automatically limited to the value set by the host. Charge is terminated based on user-selectable minimum current level. A safety timer with reset control provides a safety backup for I2C interface. During normal operation, bq24150/1 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and automatically enters sleep mode or high impedance mode when the input supply is removed. The charge status is reported to the host using the I2C interface.
During the charging process, the bq24150/1 monitors its junction temperature (TJ) and reduces the charge current once TJincreases to approximately 125°C. To support USB OTG device, bq24150/1 provides VBUS (approximately 5.05 V) by boosting the battery voltage. The bq24150/1 is available in 20-pin WCSP package.
The bq24150/1 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The bq24150/1 integrates a synchronous PWM controller, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.
The bq24150/1 charges the battery in three phases: conditioning, constant current and constant voltage. The input current is automatically limited to the value set by the host. Charge is terminated based on user-selectable minimum current level. A safety timer with reset control provides a safety backup for I2C interface. During normal operation, bq24150/1 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and automatically enters sleep mode or high impedance mode when the input supply is removed. The charge status is reported to the host using the I2C interface.
During the charging process, the bq24150/1 monitors its junction temperature (TJ) and reduces the charge current once TJincreases to approximately 125°C. To support USB OTG device, bq24150/1 provides VBUS (approximately 5.05 V) by boosting the battery voltage. The bq24150/1 is available in 20-pin WCSP package.