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TPS51219 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS51219 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 38 page 1 2 3 4 12 11 10 9 SW DH DL V5 VREF REFIN GSNS VSNS TPS51219RTE 5 6 7 8 16 15 14 13 VSNS GSNS PGOOD V5IN EN V OUT V IN UDG-11006 TPS51219 www.ti.com SLUSAG1B – MARCH 2011 – REVISED OCTOBER 2011 High Performance, Single-Synchronous Step-Down Controller with Differential Voltage Feedback 1 FEATURES DESCRIPTION The TPS51219 is a small-sized single buck controller 23 • Differential Voltage Feedback with adaptive on-time control. It provides a choice of • DC Compensation for Accurate Regulation control modes (D-CAP ™ or D-CAP2™) to meet a • Wide Input Voltage Range: 3 V to 28 V wide range of system requirements. It is designed for tight DC regulation requirements such as the VCCIO • Output Voltage Range: 0.5 V to 2.0 V with application for Intel® notebooks. The performance Fixed Options of 1.05 V and 1.00 V and flexibility of the TPS51219 makes it suitable for • Wide Output Load Range: 0 A to 20 A+ low output voltage, high current, PC system power • Adaptive On-Time Modulation with Selectable rails and similar point-of-load (POL) power supplies. Control Architecture and Frequency Differential voltage feedback and the voltage compensation function combine to provide high – D-CAP™ Mode at 300 kHz/400 kHz for Fast precision power to load devices. Transient Response A small package, fixed voltage options and minimal – D-CAP2™ Mode at 500 kHz/670 kHz for external component count saves cost and space, Ceramic Output Capacitor while a dedicated EN pin and pre-set frequency • 4700 ppm/ °C, Low-Side RDS(on) Current Sensing selections minimize design effort. The skip-mode at • RSENSE Accurate Current Sense Option light load condition, strong gate drivers, and low-side FET RDS(on) current sensing provides high efficiency • Internal, 1-ms Voltage Servo Softstart operation over a broad load range. The external • Built-In Output Discharge resistor current sense option enables accurate • Power Good Output current sensing. The conversion input voltage (the high-side FET drain voltage) ranges from 3 V to 28 V • Integrated Boost Switch and output voltage ranges from 0.5 V to 2.0 V. The • Built-In OVP/UVP/OCP device requires an external 5-V supply. • Thermal Shutdown (Non-latched) The TPS51219 is available in a 16-pin, QFN package • 3 mm × 3 mm, 16-Pin, QFN (RTE) Package and is specified for ambient temperature from -40 °C to 85 °C. APPLICATIONS • Notebook Computers • I/O Supplies 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 D-CAP, D-CAP2 are trademarks of Texas Instruments. 3 Intel is a registered trademark of Intel. PRODUCTION DATA information is current as of publication date. Copyright © 2011, 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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Similar Description - TPS51219_14 |
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