SS88/89

Overview

The SS88/89 is a series of high conversion efficiency, low power consumption, and high operating frequency PFM synchronous boost DC-DC converter chip. Using PFM control circuit, the chip can automatically switch duty cycle coefficient according to the load current, which can obtain low ripple, high efficiency and wide output voltage range. The built-in synchronous switch tube and the low consumption current of the chip can effectively improve the conversion efficiency of DC-DC and equipment life cycle. Only three components are needed on the periphery to boost the low input battery voltage to the desired operating voltage.

Feature

• High efficiency:Up to 93%
• Low start voltage:
  • 0.9V@IOUT=1Ma
• Low static current:7uA
• Frequency:320KHZ
• Optional output voltage:
  • 1.9V~5.0V
• The output precision: ±2%
• The output current:300mA
• Low ripple, low noise
• synchronous rectification

Documents

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