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TPS65720, TPS657201, TPS657202, TPS65721
SLVS979C – OCTOBER 2009 – REVISED MAY 2018
TPS6572x Power Management IC (PMIC) With Battery Charger, One Step-Down Converter and One LDO
1 Features
•1 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
2 Applications
• Bluetooth Headsets • Handheld Equipment • Wearables, Smart Watches • Portable Accessories
3 Description
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 lowpower 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, TPS6...
TPS65720 PDF File
