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TPS53311RGTR Datasheet(PDF) 1 Page - Texas Instruments |
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TPS53311RGTR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 24 page TPS53311 13 VIN 14 VIN 6 7 5 SW SW SW V IN 2.9 V to 6 V V IN V DD 2.9 V to 3.5 V Output All MLCCs UDG-10027 4 3 10 9 PGD C BST PGD FB COMP 12 11 2 VDD AGND SYNC 1 8 EN PS 15 PGND 16 PGND Pad VBST EN SYNC TPS53311 www.ti.com SLUSA41 – JUNE 2010 3-A Step-Down Regulator with Integrated Switcher Check for Samples: TPS53311 1 FEATURES LOW VOLTAGE APPLICATIONS • 5-V Step-down Rail 2 • TI Proprietary Integrated MOSFET and Packaging Technology • 3.3-V Step-down Rail • Continuous 3-A Output Current DESCRIPTION • Supports All MLCC Output Capacitor TPS53311 is a fully integrated synchronous buck • Supports Skip Mode for Light Load Control regulator using the TI's proprietary SmoothPMW™ • Optimized Efficiency at Light and Heavy Loads voltage mode control. It is designed for 3.3-V and 5-V • Voltage Mode Control step-downs where system size is at a premium, and where performance and optimized component lists • Supports Master-Slave Interleaved Operation are mandatory. • Synchronization up to ±20% of Nominal Frequency The TPS53311 features a 1.1-MHz switching frequency, SKIP mode operation support, pre-bias • Conversion Voltage Range Between 2.9 V and startup, internal softstart, output soft discharge, 6.0 V internal VBST switch, power good, EN/input UVLO, • Soft-Stop Output Discharge During Disable overcurrent, overvoltage, undervoltage and • Adjustable Output Voltage Ranging Between over-temperature protections and all ceramic output capacitor support. It supports supply voltage from 0.6 V and 0.84 V × VIN 2.9 V to 3.5 V and conversion voltage from 2.9 V to • Overcurrent, Overvoltage and 6.0 V, and output voltage is adjustable from 0.6 V to Over-Temperature Protection 0.84 V × VIN. • Small 3 × 3 , 16-Pin QFN Package The TPS53311 is available in the 3 mm × 3 mm • Open-Drain Power Good Indication 16-pin QFN package (Green RoHs compliant and Pb • Internal Boot Strap Switch free) with TI proprietary Integrated MOSFET and packaging technology and operates between –40°C • Low RDS(on), 24 mΩ with 3.3-V Input and 19-mΩ and 85°C. with 5-V Input TYPICAL APPLICATION CIRCUIT 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 SmoothPMW is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2010, 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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