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TPS6755ID Datasheet(PDF) 1 Page - Texas Instruments |
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TPS6755ID Datasheet(HTML) 1 Page - Texas Instruments |
1 / 19 page TPS6755 ADJUSTABLE INVERTING DC/DC CONVERTER SLVS155A – NOVEMBER 1996 REVISED DECEMBER 1996 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 1-W Output (VCC ≥ 4.5 V) D 2.7-V to 9-V Input Operating Range D 78% Typical Efficiency D 160-kHz Fixed-Frequency Current-Mode PWM Controller D EN Input Inhibits Operation and Reduces Supply Current to 1 µA D Output Voltage Limited to VO ≤ 12 V– VCC D Soft Start D 8-Pin SOIC and DIP Packages D –40°C to 85°C Free-Air Temperature Range D Pin-for-Pin Compatible with MAX755 description The TPS6755 is an adjustable inverting dc/dc converter capable of operating from inputs as low as 2.7 V. The only external components required are an inductor, an output filter capacitor, an input filter capacitor, a reference filter capacitor, two resistors, and a Schottky rectifier. An enable input is provided to shut down the inverter when an output voltage is not needed. The typical supply current is 1.9 mA at no-load and is further reduced to 1- µA when the enable input is low. The device features a 160-kHz current-mode pulse-width-modulation (PWM) controller with a p-channel MOSFET power switch. The gate drive uses the converter output to reduce the die area needed to realize the 0.4- Ω MOSFET. Soft start is accomplished with the addition of one small capacitor at SS. A 1.22-V reference is available for external loads up to 125 µA. The TPS6755 is attractive for board-level dc/dc conversion in computer peripherals and in battery-powered equipment requiring high efficiency and low supply current. Available in an 8-pin DIP or an 8-pin SOIC package, the TPS6755 operates over a free-air temperature range of – 40 °C to 85°C. EN REF SS COMP VCC OUT GND FB TPS6755 1 2 3 4 8 7 6 5 1 µF + 47 µF + 82 pF† 10 µF 10 µH 1N5817 100 µF + – 5 V VI 2.7 V to 9 V ENABLE † Not required for loads of 100 mA or less 10.2 k Ω 42.2 k Ω Figure 1. Typical Circuit 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. 1 2 3 4 8 7 6 5 EN REF SS COMP VCC OUT GND FB D OR P PACKAGE (TOP VIEW) 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 © 1996, Texas Instruments Incorporated |
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