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TPS62020DGQRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS62020DGQRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 24 page www.ti.com FEATURES DESCRIPTION APPLICATIONS Typical Application Circuit (600-mA Output Current) VIN VIN EN MODE SW FB PGND PGND SW GND 2 3 1 4 9 10 5 7 8 6 TPS62020 C1 R2 R1 C2 C3 10 µF VI 2.5 V to 6 V L1 10 µH C4 10 µF VO 0.7 V to VI / 600 mA 40 45 50 55 60 65 70 75 80 85 90 95 100 0 0.01 0.10 1 1000 10 100 EFFICIENCY vs LOAD CURRENT IL − Load Current − mA VO = 1.8 V VI = 3.6 V Mode = High Mode = Low VI = 5 V VI = 3.6 V VI = 2.7 V TPS62020 TPS62021 TPS62026 SLVS076C – JUNE 2003 – REVISED DECEMBER 2004 600 mA/1.25 MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER • Up to 95% Conversion Efficiency The TPS6202x is a high efficiency synchronous step-down dc-dc converter optimized for battery pow- • Typical Quiescent Current: 18 µA ered portable applications. This device is ideal for • Load Current: 600 mA portable applications powered by a single Li-Ion • Operating Input Voltage Range: 2.5 V to 6.0 V battery cell or by 3-cell NiMH/NiCd batteries. With an • Switching Frequency: 1.25 MHz output voltage range from 6.0 V down to 0.7 V, the device supports low voltage DSPs and processors in • Adjustable and Fixed Output Voltage PDAs, pocket PCs, as well as notebooks and • Power Save Mode Operation at Light load subnotebook computers. The TPS6202x operates at Currents a fixed switching frequency of 1.25 MHz and enters the power save mode operation at light load currents • Active-Low MODE pin on TPS62021 to maintain high efficiency over the entire load current • 100% Duty Cycle for Lowest Dropout range. For low noise applications, the device can be • Internal Softstart forced into fixed frequency PWM mode by pulling the • Dynamic Output Voltage Positioning MODE pin high. The difference between the TPS6202x and the TPS62021 is the logic level of the • Thermal Shutdown MODE pin. The TPS62021 has an active-low MODE • Short-Circuit Protection pin. The TPS6202x supports up to 600-mA load • 10 Pin MSOP PowerPad™ Package current. • 10 Pin QFN 3 X 3 mm Package • PDA, Pocket PC and Smart Phones • USB Powered Modems • CPUs and DSPs • PC Cards and Notebooks • xDSL Applications • Standard 5-V to 3.3-V Conversion 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. PowerPad is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2003–2004, 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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