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TPS65721 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS65721 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 50 page  SYS BAT 4.7uF / 6.3V TS NTC ISET 4.7uF / 4V 1uF LiIon SYS PB_IN VLDO1 RESET SCLK SDAT 3k foracharge currentof 150mA LDO 1 200 mA BAT INT charger / powerpath ON / OFF FB_DCDC1 2.2uH L1 DCDC 1 200 mA 4.7uF TPS65720 SYS VINLDO1 VDCDC 1=2.05 V VLDO 1 = 1.85V GPIO1 GPIO2 GPIO0 GPIO3 GPIOor 5mA current sink I2Cinterface reset generator / startuplogic PGND AGND HOLD_LDO1 HOLD_DCDC1 AC 2.2uF R1 R2 R6 R5 10k 360 k 150k bluetoothchip Vin Reset INT GPIO SCLK SDAT indicationLEDs toSYSorVDCDC1 dependingonLED forwardvoltage 2 x 3.3k 2 x 100k 22pF TPS65720 TPS65721 www.ti.com SLVS979 – OCTOBER 2009 PMU for Bluetooth Headsets Check for Samples: TPS65720 TPS65721 1 FEATURES DESCRIPTION 2 • Battery Charger With Power Path Management • 28 V Rated Power Path With: The TPS65720 is a small power management unit targeted for Bluetooth headsets or other portable low – 100 mA Input Current Limit power consumer end equipments. It contains an USB – 500 mA input Current Limit friendly Lithium-Ion battery charger, a high efficient • 300 mA Charge Current step down converter, a low dropout linear regulator and additional supporting functions. The device is • 200 mA Step-Down Converter for TPS65720 controlled by an I2C interface. Several settings can • 400 mA Step-Down Converter for TPS65721 be customized by the use of non volatile memory • Up to 92% Efficiency which is factory programmed. The 2.25MHz step-down converter enters a low power mode at light • VIN Range for DCDC Converter From 2.3V to load for maximum efficiency across the widest 5.6V possible range of load currents. For low noise • 2.25 MHz Fixed Frequency Operation applications the devices can be forced into fixed • Power Save Mode at Light Load Current frequency PWM mode using the I2C compatible interface. The device allows the use of small • Output Voltage Accuracy in PWM Mode ±2% inductors and capacitors to achieve a small solution • 100% Duty Cycle for Lowest Dropout size. TPS65720 provides an output current of up to • 1 General Purpose 200mA LDO 200mA on the DCDC converter. The TPS65720 also integrates one 200mA LDO. The LDO operates with • VIN Range for LDO From 1.8V to 5.6V an input voltage range between 1.8V and 5.6V • I2C Compatible Interface allowing it to be supplied from the output of the • 4GPIOs step-down converter or directly from the system voltage. • Available in a 25 Ball WCSP With 0,4mm Pitch and in 4mm × 4mm 32-Pin QFN Package The TPS65720 comes in a small 25-ball wafer chip scale package (WCSP) with 0,4mm ball pitch or a APPLICATIONS 4mm × 4mm QFN package with a 0,4mm pitch • Bluetooth Headsets (TPS65721). • Handheld Equipment 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 PowerPAD is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2009, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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