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LM3355 Datasheet -05 To 5.6 V Regulated 50ma Buck-boost Switched Capacitor DC/dc Converter

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM3355 Regulated 50 mA Buck-Boost Switched Capacitor DC/DC Converter December 2001 LM3355 Regulated 50mA Buck-Boost Switched Capacitor DC/DC.

General Description

The LM3355 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 LM3355 is available with a standard output voltage of 4.1V (ideal for white LED applications).

Key Features

  • n Regulated VOUT with ± 3% accuracy n Standard output voltage of 4.1V n Custom output voltages available from 1.8V to 4.1V in 100 mV increments n 2.5V to 5.5V input voltage n Up to 50 mA 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 shutdown current n 1 MHz switching frequency (typical) n Architecture and control methods provide high load current and good efficiency n MSOP-10 packa.

LM3355 Distributor

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