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SM5306 - High-Efficiency Dual-String

General Description

The SM5306 is a current mode boost converter which supplies the power and controls current in up to two strings of 10 LEDs per string.

Programming is done over an I2Ccompatible interface.

The maximum LED current is adjustable from 5mA to 28.5mA.

Key Features

  • Drives up to Two String of 10 Series LEDs.
  • 11-bit Programmable Dimming Resolution.
  • Exponential or Linear Brightness Control.
  • PWM Brightness Control for CABC Operation.
  • Independent Current Control per String.
  • Internal Soft-Start Limits Inrush Current.
  • Wide 2.5V to 5.5V Input Voltage Range.
  • Adaptive Headroom Control.
  • Selectable Boost Frequency of 500kHz or 1MHz with Optionally Additional Offset.
  • 12-Bump 1.65mm x 1.43mm WLCSP Package.
  • Protecti.

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Datasheet Details

Part number SM5306
Manufacturer Silicon Mitus
File Size 1.01 MB
Description High-Efficiency Dual-String
Datasheet download datasheet SM5306 Datasheet

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Full PDF Text Transcription (Reference)

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CONFIDENTIAL - Target Datasheet SM5306 High-Efficiency Dual-String with up to 10-WLED White LED Driver Description The SM5306 is a current mode boost converter which supplies the power and controls current in up to two strings of 10 LEDs per string. Programming is done over an I2Ccompatible interface. The maximum LED current is adjustable from 5mA to 28.5mA. At any given maximum LED current the LED brightness is further adjusted with exponential or linear dimming steps. Additionally, pulsed width modulation (PWM) brightness control can be enabled allowing for LED current adjustment by a logic level PWM signal. The boost switching frequency is programmable at 500kHz for low switching loss performance or 1MHz to allow the use of tiny low profile inductors.