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ADD5211ACPZ-R7 Datasheet PDF - Analog Devices

Part NameDescriptionManufacturer
ADD5211ACPZ-R7 Four-String, White LED Driver for LCD Backlight Applications ADI
Analog Devices ADI
ADD5211ACPZ-R7 Datasheet PDF : ADD5211ACPZ-R7 pdf   
ADD5211 image

GENERAL DESCRIPTION
The ADD5211 is a 4 channel, white LED driver for backlight applications based on high efficiency, current mode, step-up converter technology. The boost controller drives an external MOSFET switch for step-up regulation from an input voltage of 4.5 V to 40 V and a pin adjustable operating frequency between 200 kHz and 1.2 MHz. An adjustable UVLO function is implemented to reduce input current during power-off.

FEATURES
White LED driver based on an inductive boost controller
  Wide input voltage range: 4.5 V to 40 V
  Adaptive output voltage to minimize power dissipation
  Adjustable operating frequency: 200 kHz to 1.2 MHz
  Programmable UVLO
  Programmable soft start time for boost converter
  Programmable external MOSFET switching rising/falling time
Drives up to 4 LED current sinks with internal MOSFETs
  Brightness control with PWM input
  Adjustable LED current: 40 mA up to 200 mA
  Headroom control to maximize efficiency
  LED dimming frequency: up to 25 kHz
  1000:1 PWM dimming at 300 Hz
  Open drain fault indicator
  LED open and LED short fault protection
  Thermal shutdown
  Undervoltage lockout
  24-lead, 4 mm × 4 mm LFCSP

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