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TPS62224DDCT Datasheet(PDF) 1 Page - Texas Instruments |
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TPS62224DDCT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 24 page 1 FEATURES DESCRIPTION APPLICATIONS VI GND EN SW FB C3 4.7 F m L1 4.7 H m C4 10 F m TPS62220 VI 2.5Vto6V VO 1.5V/400mA R1 360kW R2 180kW C1 22pF C2 100pF 1 2 3 5 4 40 45 50 55 60 65 70 75 80 85 90 95 100 0.01 0.1 1 10 100 1000 VO =1.8V, L =4.7 H, m CO =22 F m IL − LoadCurrent − mA VI =3.7V Typical Application(AdjustibleOutputVoltageVersion) VI =5V VI =2.7V TPS62220 ,, TPS62221,, TPS62222 TPS62223, TPS62224, TPS62225 TPS62227, TPS62228, TPS62229 www.ti.com....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009 400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23 2 • High-Efficiency Synchronous Step-Down Converter With up to 95% Efficiency The TPS6222x devices are a family of high-efficiency, synchronous step-down converters ideally suited for • 2.5-V to 6-V Input Voltage Range portable systems powered by 1-cell Li-Ion or 3-cell • Adjustable Output Voltage Range From 0.7 V NiMH/NiCd batteries. The devices are also suitable to to VI operate from a standard 3.3-V or 5-V voltage rail. • Fixed Output Voltage Options Available With an output voltage range of 6 V down to 0.7 V • Up to 400-mA Output Current and up to 400-mA output current, the devices are • 1.25-MHz Fixed Frequency PWM Operation ideal for powering the low voltage TMS320™ DSP family and processors used in PDAs, pocket PCs, • Highest Efficiency Over Wide Load Current and smart phones. Under nominal load current, the Range Due to Power-Save Mode devices operate with a fixed switching frequency of • 15 µA Typical Quiescent Current typically 1.25 MHz. At light load currents, the part • Soft Start enters the power-save mode operation; the switching frequency is reduced and the quiescent current is • 100% Duty Cycle Low-Dropout Operation typically only 15 µA; therefore, the device achieves • Dynamic Output-Voltage Positioning the highest efficiency over the entire load current • Available in TSOT23 Package range. The TPS6222x needs only three small external components. Together with the tiny TSOT23 package, a minimum system solution size can be achieved. An advanced fast response voltage mode • PDAs and Pocket PC control scheme achieves superior line and load • Cellular Phones, Smart Phones regulation with small ceramic input and output • OMAP™ and Low Power DSP Supply capacitors. • Digital Cameras • Portable Media Players • Portable Equipment • WLAN PC Cards 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 OMAP, TMS320 are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2003–2009, 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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