Datasheet4U Logo Datasheet4U.com

SC4539 - High Effi ciency Boost Converter

Datasheet Summary

Description

The SC4539 is designed to regulate current for a series chain of white LEDs in LCD backlighting applications where small size and high efficiency are priorities.

This device integrates an 800kHz current-mode PWM boost converter and a 30mA programmable low dropout current sink regulator.

Features

  • Input voltage range.
  • 2.8V to 5.5V Current-mode PWM control.
  • 800kHz.
  • Programmable LED current up to 30mA.
  • Soft-start to reduce in-rush current.
  • PWM dimming.
  • 100Hz to 50kHz.
  • PWM dimming at ISET.
  • Analog and filtered.
  • Over-voltage protection.
  • 25V (max. ) www. DataSheet4U. com.
  • Under-voltage lockout (UVLO).
  • Thermal shutdown.
  • Shutdown current.

📥 Download Datasheet

Datasheet preview – SC4539

Datasheet Details

Part number SC4539
Manufacturer Semtech Corporation
File Size 286.07 KB
Description High Effi ciency Boost Converter
Datasheet download datasheet SC4539 Datasheet
Additional preview pages of the SC4539 datasheet.

📁 Similar Datasheet

  • SC451 - Single Phase Power Supply Controller (Semtech)
  • SC451ITSTRT - Single Phase Power Supply Controller (Semtech)
  • SC451XX - LI-ION BATTERY PROTECTOR (ETC)
  • SC4541 - High Frequency LED Driver (Semtech)
  • SC4000 - Universal Timeslot Interchange (NXP)
  • SC4002 - Linear Hall Effect Sensor (Semiment)
  • SC4002A - LCD MODULES (ETC)
  • SC4003 - Linear Hall Effect Sensor (Semiment)
  • SC4004A - LCD MODULES (ETC)
  • SC4004B - LCD (ETC)
Other Datasheets by Semtech Corporation
  • SC453 - VID Programmed Single Phase Power Supply Controller
  • SC4538 - High Effi ciency Boost Converter
  • SC450 - Dual Phase Power Supply Controller
  • SC4501 - 2MHz Step-Up Switching Regulator
  • SC4502 - 2MHz Step-Up Switching Regulator
  • SC4502H - 2MHz Step-Up Switching Regulator
  • SC4503 - 1.3MHz Step-Up Switching Regulator
  • SC4505 - High Efficiency Boost Converter

Full PDF Text Transcription

Click to expand full text
SC4539 High Efficiency Boost Converter for up to 6 LEDS POWER MANAGEMENT Features Input voltage range — 2.8V to 5.5V Current-mode PWM control — 800kHz „ Programmable LED current up to 30mA „ Soft-start to reduce in-rush current „ PWM dimming — 100Hz to 50kHz „ PWM dimming at ISET — Analog and filtered „ Over-voltage protection — 25V (max.) www.DataSheet4U.com „ Under-voltage lockout (UVLO) „ Thermal shutdown „ Shutdown current — <1μA „ Ultra-thin package — 2mm x 2mm x 0.6mm „ Lead-free package, WEEE and RoHS compliant „ „ Description The SC4539 is designed to regulate current for a series chain of white LEDs in LCD backlighting applications where small size and high efficiency are priorities.
Published: |