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Slkor SL4139

Manufacturer
SlkorAsian Brands
MPN
SL4139
LCSC Part #
C5375302
Packaging
SOT-23-5
Customer #
Key Attributes
32V high-current white LED driver chip
DatasheetSlkor SL4139
RoHS Compliance1 documents available
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement

Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/LED Drivers
ManufacturerSlkor
PackagingSOT-23-5
Frequency - Switching1MHz
DimmingPWM
Voltage - Input(AC)-
Number of Channels-
TypeDC-DC
Switch tube (built-in/external)Built-in
Output Voltage-
Operating Temperature-40℃~+150℃
Output Current180mA
FeaturesLED open-circuit protection;Over Voltage Protection;Over-Temperature Protection (OTP)
TopologyBoost
Constant Current Accuracy-
Voltage - Input(DC)3.3V~32V
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Introduction

AI Translation

SL4139 is a DC/DC boost converter that provides constant, precise drive current for multiple LEDs. With a fixed switching frequency of 1MHz, the SL4139 can be used with small-value external ceramic capacitors and inductors. Via an adjustable current set by external resistor R1, the SL4139 can drive multiple series-connected LEDs. The SL4139 is suitable for driving LEDs of the same type, supporting up to 9 white LEDs in series or a drive voltage up to 32V. LED brightness can be adjusted using a DC voltage, a logic signal, or a PWM signal. The shutdown control pin (SHDN) allows the device to operate in power-down mode with ultra-low quiescent current. In addition to thermal protection and overload current limiting, the SL4139 enters an ultra-low power operating mode when an LED open-circuit fault occurs. The device is available in a compact SOT23-5 package.

Features

AI Translation
  • Switch peak current 1A
  • Drive voltage up to 32V
  • Power conversion efficiency up to 90%
  • Shutdown current less than 10μA
  • Fixed 1MHz frequency with low noise
  • Soft-start inrush current limiting
  • LED open-circuit overvoltage protection
  • 3.3V undervoltage lockout (UVLO)
  • Thermal protection
  • RoHS
  • Industrial grade (-40℃ to +85℃)

Applications

AI Translation
  • GPS navigation systems
  • Portable multimedia players
  • Handheld devices