lm2780tp National Semiconductor Corporation, lm2780tp Datasheet
lm2780tp
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lm2780tp Summary of contents
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... Micro SMD chip-scale package. See also: LM2781, a fast clock (210kHz typ) version of this topology with even lower output voltage ripple. Typical Application Circuit © 2003 National Semiconductor Corporation Features n Inverts Input Voltage n Ultra-Low Voltage Ripple and 8Ω Typical Output Resistance with Two Flying Capacitors n Output Resistance of 18Ω ...
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... A3 C2 OUT C3 C1- Ordering Information Order Number LM2780TP LM2780TPX www.national.com 8-Bump Thin Micro SMD Package NS Package Number TPA08 Description Secondary flying-capacitor connection Input voltage. Input range: 1.8V to 5.5V Primary flying-capacitor connection Shutdown pin logic input. Low = on, High = shutdown Ground Secondary flying-capacitor connection Output voltage ...
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Absolute Maximum Ratings 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V pin: Voltage to GND IN SD pin: Voltage to GND Output Short-to-GND Duration (Note 3) Maximum Junction ...
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Typical Performance Characteristics Unless otherwise specified 25˚ Output Voltage vs. Load Current Output Resistance vs. Temperature (I Switching Frequency vs. Temperature www.national.com = 10µF. IN OUT Power Efficiency vs. Load ...
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Block Diagram Operation Description The LM2780 is a switched capacitor voltage inverter that produces a negative output voltage from a positive input voltage. To minimize output voltage ripple, the LM2780 con- tains two charge pump inverters that operate 180˚ out ...
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Operation Description OUTPUT RESISTANCE Output resistance (R ) models the internal non-idealities OUT of a charge pump that result in droop in the output voltage. The effect of output resistance on output voltage is ex- pressed in the following equation: ...
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... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...