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TPS51275CRUKT Datasheet(PDF) 1 Page - Texas Instruments |
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TPS51275CRUKT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 28 page TPS51275, TPS51275C www.ti.com SLUSB45 – JUNE 2012 Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs 1 FEATURES APPLICATIONS 2 • Input Voltage Range: 5 V to 24 V • Notebook Computers • Output Voltages: 5 V and 3.3 V (Adjustable • Tablet Computers Range ±10%) DESCRIPTION • Built-in, 100-mA, 5-V and 3.3-V LDOs The TPS51275/C is a cost-effective, dual- • Clock Output for Charge-Pump synchronous buck controller targeted for notebook • ±1% Reference Accuracy system-power supply solutions. It provides 5-V and • Adaptive On-time D-CAP™ Mode Control 3.3-V LDOs and requires few external components. The 260-kHz VCLK output can be used to drive an Architecture with 300kHz/355kHz Frequency external charge pump, generating gate drive voltage Setting for the load switches without reducing the main • Auto-skip Light Load Operation converter efficiency. The TPS51275/C supports high • Internal 0.8-ms Voltage Servo Soft-Start efficiency, fast transient response and provides a combined power-good signal. Adaptive on-time, D- • Low-Side RDS(on) Current Sensing Scheme with CAP™ control provides convenient and efficient 4500 ppm/°C Temperature Coefficient operation. The device operates with supply input • Built-in Output Discharge Function voltage ranging from 5 V to 24 V and supports output • Separate Enable Input for Switchers voltages of 5.0 V and 3.3 V. The TPS51275/C is available in a 20-pin, 3 mm × 3 mm, QFN package • Dedicated OC Setting Terminals and is specified from –40°C to 85°C. • Power Good Indicator • OVP/UVP/OCP Protection • Non-latch UVLO/OTP Protection • 20-Pin, 3 mm × 3 mm, QFN (RUK) ORDERING INFORMATION(1) ORDERABLE ENABLE ALWAYS ON-LDO PACKAGE OUTPUT SUPPLY QUANTITY FUNCTION DEVICE NUMBER TPS51275RUKR Tape and Reel 3000 VREG3 PLASTIC Quad Flat TPS51275RUKT Mini reel 250 Pack EN1 and EN2 TPS51275CRUKR Tape and Reel 3000 (20 pin QFN) VREG3 and VREG5 TPS51275CRUKT Mini reel 250 (1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. 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 is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2012, 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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