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LM3354 - Regulated 90mA Buck-Boost Switched Capacitor DC/DC Converter

This page provides the datasheet information for the LM3354, a member of the LM3 Regulated 90mA Buck-Boost Switched Capacitor DC/DC Converter family.

Description

The LM3354 is a CMOS switched capacitor DC/DC converter that produces a regulated output voltage by automatically stepping up (boost) or stepping down (buck) the input voltage.

It accepts an input voltage between 2.5V and 5.5V.

Features

  • n Regulated VOUT with ± 3% (5.0V, 4.1V, and 3.3V options) or ± 4% (1.8V option) accuracy n Standard output voltages of 1.8V, 3.3V, 4.1V, and 5.0V n Custom output voltages available from 1.8V to 5.0V in 100 mV increments with volume order n 2.5V to 5.5V input voltage range n Up to 90mA (5.0V, 4.1V, and 1.8V options) or 70mA (3.3V option) output current n > 75% average efficiency n Uses few, low-cost external components n Very small solution size n 375 µA typical operating current n 2.3 µA typical.

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Full PDF Text Transcription

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LM3354 Regulated 90mA Buck-Boost Switched Capacitor DC/DC Converter February 2002 LM3354 Regulated 90mA Buck-Boost Switched Capacitor DC/DC Converter General Description The LM3354 is a CMOS switched capacitor DC/DC converter that produces a regulated output voltage by automatically stepping up (boost) or stepping down (buck) the input voltage. It accepts an input voltage between 2.5V and 5.5V. The LM3354 is available with standard output voltages of 1.8V, 3.3V, 4.1V (ideal for white LED applications), and 5.0V. If other output voltage options between 1.8V and 5.0V are desired, please contact your National Semiconductor representative. The LM3354’s proprietary buck-boost architecture enables up to 90mA of load current at an average efficiency greater than 75%.
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