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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.

📥 Download Datasheet

Datasheet Details

Part number SP1938
Manufacturer SYNC POWER
File Size 260.49 KB
Description DC-DC Step-Up Converter
Datasheet download datasheet SP1938 Datasheet

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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.

View original datasheet text
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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