BQ24151A Series
I2C 1cell 1.25A Buck battery charger with OTG and 2KV HBM & 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 2KV HBM & Automatic High Impedance Mode
| Part | Fault Protection | Operating Temperature [Max] | Operating Temperature [Min] | Battery Chemistry | Interface | Supplier Device Package | Mounting Type | Programmable Features | Current - Charging | Number of Cells | Charge Current - Max [Max] | Voltage - Supply (Max) [Max] | Battery Pack Voltage | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24151AYFFR | Over Temperature, Over Voltage | 85 °C | -40 °C | Lithium Ion/Polymer | I2C | 20-DSBGA | Surface Mount | Current, Timer, Voltage | Constant - Programmable | 1 | 1.25 A | 6 V | 4.44 V | 20-UFBGA, DSBGA |
Texas Instruments BQ24151AYFFT | Over Temperature, Over Voltage | 85 °C | -40 °C | Lithium Ion/Polymer | I2C | 20-DSBGA | Surface Mount | Current, Timer, Voltage | Constant - Programmable | 1 | 1.25 A | 6 V | 4.44 V | 20-UFBGA, DSBGA |
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 Timer with Reset ControlTermination EnableSynchronous Fixed-Frequency PWM Controller Operating at 3 MHz With 0% to 99.5% Duty CycleRobust ProtectionReverse Leakage Protection Prevents Battery DrainageThermal Regulation and ProtectionInput/Output Overvoltage ProtectionStatus Output for Charging and FaultsAutomatic High Impedance Mode for Low Power ConsumptionUSB Friendly Boot-Up SequenceAutomatic Charging – bq24150AAutomatic High Impedance Mode – bq24151ABoost Mode Operation for USB OTG:Input Voltage Range (from Battery): 2.5 V to 4.5 VOutput for VBUS: 5.05 V/ 200 mA2 x 2 mm 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 Timer with Reset ControlTermination EnableSynchronous Fixed-Frequency PWM Controller Operating at 3 MHz With 0% to 99.5% Duty CycleRobust ProtectionReverse Leakage Protection Prevents Battery DrainageThermal Regulation and ProtectionInput/Output Overvoltage ProtectionStatus Output for Charging and FaultsAutomatic High Impedance Mode for Low Power ConsumptionUSB Friendly Boot-Up SequenceAutomatic Charging – bq24150AAutomatic High Impedance Mode – bq24151ABoost Mode Operation for USB OTG:Input Voltage Range (from Battery): 2.5 V to 4.5 VOutput for VBUS: 5.05 V/ 200 mA2 x 2 mm 20-Pin WCSP PackageAPPLICATIONSMobile and Smart PhonesMP3 PlayersHandheld Devices
Description
AI
The bq24150A/1A 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 bq24150A/1A 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 bq24150A/1A 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, bq24150A/1A 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 bq24150A/1A monitors its junction temperature (TJ) and reduces the charge current once TJincreases to approximately 125°C. To support USB OTG device, bq24150A/1A provides VBUS (approximately 5.05 V) by boosting the battery voltage. The bq24150A/1A is available in 20-pin WCSP package.
The bq24150A/1A 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 bq24150A/1A 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 bq24150A/1A 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, bq24150A/1A 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 bq24150A/1A monitors its junction temperature (TJ) and reduces the charge current once TJincreases to approximately 125°C. To support USB OTG device, bq24150A/1A provides VBUS (approximately 5.05 V) by boosting the battery voltage. The bq24150A/1A is available in 20-pin WCSP package.