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TPS6266X Datasheet(PDF) 1 Page - Texas Instruments |
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TPS6266X Datasheet(HTML) 1 Page - Texas Instruments |
1 / 27 page CSP-6 VIN SW FB MODE EN GND V OUT 1.8V@1000mA C 4.7 F I m TPS62661 L 0.47 H m C 4.7 F O m V BAT 3.0V..5.5V 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 I -LoadCurrent-mA O 0 50 100 150 200 250 300 350 400 450 500 PowerLoss PFM/PWMOperation Efficiency PFM/PWMOperation V =3.6V, V =1.8V I O TPS6266x www.ti.com SLVS871A – FEBRUARY 2010 – REVISED MARCH 2010 1000-mA, 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING Check for Samples: TPS6266x 1 FEATURES DESCRIPTION 2 • 91% Efficiency at 6MHz Operation The TPS6266x device is a high-frequency • 31mA Quiescent Current synchronous step-down dc-dc converter optimized for • Wide VIN Range From 2.3V to 5.5V battery-powered portable applications. Intended for • 6MHz Regulated Frequency Operation low-power applications, the TPS6266x supports up to 1000mA peak load current, and allows the use of low • Best in Class Load and Line Transient cost chip inductor and capacitors. • ±2% Total DC Voltage Accuracy With a wide input voltage range of 2.3V to 5.5V, the • Automatic PFM/PWM Mode Switching device supports applications powered by Li-Ion • Low Ripple Light-Load PFM Mode batteries with extended voltage range. Different fixed • Fast Turn-On Time, <60-ms Start-Up Time voltage output versions are available from 1.2V to 2.3V. • Integrated Active Power-Down Sequencing (Optional) The TPS6266x operates at a regulated 6-MHz switching frequency and enters the power-save mode • Current Overload and Thermal Shutdown operation at light load currents to maintain high Protection efficiency over the entire load current range. • Three Surface-Mount External Components Required (One MLCC Inductor, Two Ceramic The PFM mode extends the battery life by reducing the quiescent current to 31mA (typ) during light load Capacitors) and standby operation. For noise-sensitive • Complete Sub 1-mm Component Profile applications, the device can be forced into fixed Solution frequency PWM mode by pulling the MODE pin high. • Total Solution Size <12 mm2 In the shutdown mode, the current consumption is reduced to less than 1mA. • Available in a 6-Pin NanoFree™ (CSP) The TPS6266x is available in an 6-pin chip-scale APPLICATIONS package (CSP). • Cell Phones, Smart-Phones • PDAs, Pocket PCs • Portable Hard Disk Drives • DC/DC Micro Modules Figure 1. Smallest Solution Size Application Figure 2. Efficiency vs Load Current 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 NanoFree 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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