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SP1938 - DC-DC Step-Up Converter

Description

The SP1938 is a step-up DC/DC converter for white LED driver with over voltage protection.

The device can driver one to four LEDs in series from a single cell Lithium Ion battery.

Internal functions include current limiting; thermal shutdown; OVP and soft-start to prevent damage operate status.

Features

  • Current Source with Over Voltage Protection.
  • Fast 0.8MHz Switching Frequency.
  • High Efficiency up to 87%.
  • Drives up to Four LEDs From 3.2V Supply.
  • Drives up to Six LEDs From a 5V Supply.
  • Low Quiescent Current.
  • Disconnects LEDs in Shutdown Mode.
  • Internal Over Temperature and Current Limiting Shutdown Function.
  • Internal Soft-Start Circuit.
  • 26V Rugged Bipolar Switch.
  • Available in a Small SOT-23-6L Package PIN.

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Datasheet preview – SP1938

Datasheet Details

Part number SP1938
Manufacturer SYNC POWER
File Size 260.49 KB
Description DC-DC Step-Up Converter
Datasheet download datasheet SP1938 Datasheet
Additional preview pages of the SP1938 datasheet.

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Full PDF Text Transcription

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SP1938 DC-DC Step-Up Converter for White LED DESCRIPTION The SP1938 is a step-up DC/DC converter for white LED driver with over voltage protection. The device can driver one to four LEDs in series from a single cell Lithium Ion battery. Internal functions include current limiting; thermal shutdown; OVP and soft-start to prevent damage operate status. The SP1938 operates at 0.8MHz apply to Lithium-Ion powered systems. A low 95mV reference voltage minimizes power loss in the current setting resistor for better efficiency. The SP1938 is available in small package SOT-23-6L. APPLICATIONS  Battery Power Equipment  Notebook Computers  PDA  Cellular Phone FEATURES  Current Source with Over Voltage Protection  Fast 0.
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