White LED Driver for large LCD Panels (DCDC Converter type) - BD93941FP

BD93941FP is a high efficiency driver for white LEDs and designed for large LCDs. These ICs are built-in a boost DCDC converters that employ an array of LEDs as the light source. BD93941FP has some protect function against fault conditions, such as the over-voltage protection (OVP), the over current limit protection of DCDC (OCP), the short circuit protection (SCP), the open detection of LED string. Therefore BD93941FP is available for the fail-safe design over a wide range output voltage.

Part NumberStatusPackageUnit QuantityMinimum Package QuantityPacking TypeRoHS
BD93941FP-E2ActiveHSOP2020002000TapingYes

BD93941FP Data Sheet

Specifications
TopologyBoost
Number of Outputs4
Vin(Min.)[V]9.0
Vin(Max.)[V]35.0
Output Current(Max.)[mA]200.0
Frequency(Max.)[MHz]0.15
DimmingPWM
Operating Temperature (Min.)[°C]-40
Operating Temperature (Max.)[°C]85
Technical Documents
Features
  • 4ch LED constant current driver and DC/DC converter
  • Maximum LED Current: 200mA
  • LED Feedback Voltage: 0.37V (@ADIM=2.5V)so lower heat. Adjustable Feed Back Voltage by following LED Current setting.
  • ±2% LED current accuracy (ADIM=2.5V, when each LED is set to 100mA)
  • Analog current (Linear) dimming at ADIM pin
  • LED pin rating 60V
  • Individual detection and individual LED OFF for both open and short circuits
  • Built-in ISET pin short-circuit protection circuit
  • Set Soft-Start time by external capacitor.
  • FET’s Gate (N pin) is driven by 5.8V swing
  • Built-in Vout discharge circuit for shutdown
  • Built-in Vout overvoltage protection (OVP) / reduced voltage protection (SCP) circuit
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