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UC3383 - STEP-UP DC/DC CONVERTERS

General Description

The UTC UC3383 Series are PFM step-up DC/DC switching converter.

The UTC UC3383 can support both large and small currents.

It automatically switches duty ratio (45%/75%) when it senses changes in load.

Key Features

  • S.
  • Output Voltage Range: 2.0V~7.0V in 0.1V Increments.
  • Operating (Start-up) Voltage Range: 0.9V~10V.
  • Highly Accurate: Set-up Voltage ±2.5%.
  • Maximum Oscillator Frequency (Max Fosc1): 180kHz (±15%).
  • Variable Duty Ratio: 45%/75% (±5%).
  • Both Switching Transistor Built-in and External Types are Available.
  • 5-Lead Package Offer Chip Enable or Independent VOUT Pin Option. CMOS IC 4 5 3 12 SOT-25 1 SOT-89.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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UNISONIC TECHNOLOGIES CO., LTD UC3383 PFM CONTROLLED, STEP-UP DC/DC CONVERTERS (VARIABLE DUTY RATIO)  DESCRIPTION The UTC UC3383 Series are PFM step-up DC/DC switching converter. The UTC UC3383 can support both large and small currents. It automatically switches duty ratio (45%/75%) when it senses changes in load. Both built-in and external transistor types include 5-pin and 3-pin packages, which are provided with either a CE (chip enable) function that reduces power consumption during shut-down mode, or a VDD pin function (separated power and voltage detect pins).  FEATURES * Output Voltage Range: 2.0V~7.0V in 0.1V Increments * Operating (Start-up) Voltage Range: 0.9V~10V * Highly Accurate: Set-up Voltage ±2.