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TPS62224 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS62224 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 24 page www.ti.com FEATURES DESCRIPTION APPLICATIONS VI GND EN SW FB C3 4.7 F m L1 4.7 H m C4 10 F m TPS62220 VI 2.5 V to 6 V VO 1.5 V/400 mA R1 360 kW R2 180 kW C1 22 pF C2 100 pF 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 = 1.8 V, L = 4.7 H, m CO = 22 F m IL − Load Current − mA VI = 3.7 V Typical Application (Adjustible Output Voltage Version) VI = 5 V VI = 2.7 V TPS62220, TPS62221, TPS62222 TPS62223, TPS62224, TPS62227 TPS62228, TPS62229 SLVS491D – SEPTEMBER 2003 – REVISED MARCH 2006 400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23 • High-Efficiency Synchronous Step-Down The TPS6222x devices are a family of high-efficiency, Converter With up to 95% Efficiency synchronous step-down converters ideally suited for portable systems powered by 1-cell Li-Ion or 3-cell • 2.5-V to 6-V Input Voltage Range NiMH/NiCd batteries. The devices are also suitable to • Adjustable Output Voltage Range From 0.7 V operate from a standard 3.3-V or 5-V voltage rail. to VI With an output voltage range of 6 V down to 0.7 V • Fixed Output Voltage Options Available and up to 400-mA output current, the devices are • Up to 400-mA Output Current ideal for powering the low voltage TMS320™ DSP • 1.25-MHz Fixed Frequency PWM Operation family and processors used in PDAs, pocket PCs, and smart phones. Under nominal load current, the • Highest Efficiency Over Wide Load Current devices operate with a fixed switching frequency of Range Due to Power-Save Mode typically 1.25 MHz. At light load currents, the part • 15-µA Typical Quiescent Current enters the power-save mode operation; the switching • Soft Start frequency is reduced and the quiescent current is typically only 15 µA; therefore, the device achieves • 100% Duty Cycle Low-Dropout Operation the highest efficiency over the entire load current • Dynamic Output-Voltage Positioning range. The TPS6222x needs only three small • Available in TSOT23 Package external components. Together with the tiny TSOT23 package, a minimum system solution size can be achieved. An advanced fast response voltage mode control scheme achieves superior line and load • PDAs and Pocket PC regulation with small ceramic input and output • Cellular Phones, Smart Phones capacitors. • OMAP™ and Low Power DSP Supply • Digital Cameras • Portable Media Players • Portable Equipment • WLAN PC Cards 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. OMAP, TMS320 are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2003–2006, 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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