●The TPS6572x device is a small power management unit targeted for Bluetooth headsets or other portable low-power consumer-end equipments. The device contains an USB friendly Lithium-Ion battery charger, a highly efficient step-down converter, a low-dropout linear regulator, and additional supporting functions. The device is controlled by an I2C interface. Several settings can be customized by the use of nonvolatile memory which is factory programmed.
●The 2.25-MHz step-down converter enters a low-power mode at light load for maximum efficiency across the widest possible range of load currents. For low-noise applications the devices can be forced into fixed-frequency PWM mode using the I2C-compatible interface.
●The device allows the use of small inductors and capacitors to achieve a small solution size. The TPS65720 provides an output current of up to 200 mA on the DC-DC converter while TPS657201, TPS657202, and TPS65721 provide up to 400 mA. The TPS6572x also integrates one 200-mA LDO. The LDO operates with an input voltage range from 1.8 V to 5.6 V, thus allowing it to be supplied from the output of the step-down converter or directly from the system voltage.
●The TPS65720, TPS657201, and TPS657202 come in a small 25-ball 2-mm × 2-mm wafer chip scale package (DSBGA) with 0.4-mm ball pitch or a 4-mm × 4-mm WQFN package with a 0.4-mm pitch (TPS65721).
● Battery Charger With Power Path Management
● 28-V Rated Power Path With:
● 100-mA Input Current Limit
● 500-mA Input Current Limit
● 300-mA Charge Current
● 200-mA Step-Down Converter for TPS65720
● 400-mA Step-Down Converter for TPS65721, TPS657201, TPS657202
● Up to 92% Efficiency
● VIN Range for DCDC Converter From 2.3 V to 5.6 V
● 2.25-MHz Fixed Frequency Operation
● Power Save Mode at Light Load Current
● Output Voltage Accuracy in PWM Mode ±2%
● 100% Duty Cycle for Lowest Dropout
● 1 General Purpose 200-mA LDO
● VIN Range for LDO From 1.8 V to 5.6 V
● I2C Compatible Interface
● 4GPIOs
● Available in a 25-Ball DSBGA With 0.4-mm Pitch and in 4-mm × 4-mm 32-Pin WQFN Package
Part 3D Model
