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REG71050DDCR Datasheet(PDF) 1 Page - Texas Instruments |
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REG71050DDCR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 15 page SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003 60mA SwitchedCap BUCK/BOOST CONVERTER REG710 FEATURES D Wide Input Range: 1.8V to 5.5V D Automatic Step-Up/Step-Down Operation D Low Input Current Ripple D Low Output Voltage Ripple D Minimum Number of External Components No Inductors D 1MHz Internal Oscillator Allows Small Capacitors D Shutdown Mode D Thermal and Current Limit Protection D Six Output Voltages Available: 5.5V, 5.0V, 3.3V, 3.0V, 2.7V, 2.5V D Small Packages: − SOT23-6 − TSOT23-6 (REG71055 and REG71050 Only) D Evaluation Modules Available: REG710EVM-33, REG710EVM-5 APPLICATIONS D Smart Card Readers D SIM Card Supplies D Cellular Phones D Portable Communication Devices D Personal Digital Assistants D Notebook and Palm-Top Computers D Modems D Electronic Games D Handheld Meters D PCMCIA Cards D Card Buses D White LED Drivers D LCD Displays D Battery Backup Supplies DESCRIPTION The REG710 is a switched capacitor voltage converter, that produces a regulated, low-ripple output voltage from an unregulated input voltage. A wide-input supply voltage of 1.8V to 5.5V makes the REG710 ideal for a variety of battery sources, such as single cell Li-Ion, or two and three cell nickel- or alkaline-based chemistries. The input voltage may vary above and below the output voltage and the output will remain in regulation. It works equally well for step-up or step-down applications without the need for an inductor, providing low EMI DC/DC conversion. The high switching frequency allows the use of small surface-mount capacitors, saving board space and reducing cost. The REG710 is thermally protected and current limited, protecting the load and the regulator during fault conditions. Typical ground pin current (quiescent current) is 65 µA with no load, and less than 1µA in shutdown mode. The 5.5V version of the REG710 is available in a thin TSOT23-6 package. All other versions are available in a small SOT23-6 package. REG710 Used in White LED Backlight Application C IN 2.2 µF C PUMP 0.22 µF 3.3V to 4.2V C OUT 2.2 µF R LED GND Enable REG71050 REG710−5 LED LED RR www.ti.com 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. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright 2001−2003, Texas Instruments Incorporated |
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