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The following page content corresponds to the products formerly marketed by NEC Electronics

Products > ASSP > LED Driver IC >

µPD168804


uPD168804

Overview Features Applications Block Diagram


Overview

The µPD168804 is a power supply control IC with four constant-current controller/driver channels. A high current drive of up to 1,500 mA per channel is supported by providing an external power MOSFET. Furthermore, operating conditions for either step-up or step-down operation can be selected and used according to the configuration of external components and settings of selected pins. The µPD168804 has separate circuits for protecting against overheating, low voltages, overcurrents, and overvoltages (step-up operation only), and can control load currents by externally inputting PWM signals.

Part Number Functions Recommended Power
Supply Voltage (V)		 Output Current
(A)MAX.		 Package
Control Block Output Block
µPD168804 4-channel constant-current LED driver IC 4 to 6 9 to 38 1.5 48-pin QFP


Features

  • Supports high currents by selecting an external power MOSFET (1,500 mA MAX.)
  • Enables selection of step-up or step-down operation
  • Wide input voltage range (9 to 38 V)
  • Can perform on/off control of load currents by using PWM signals and setting of load current values by using external resistors
  • On-chip overcurrent protection function
  • On-chip overvoltage protection function (during step-up operation only)
  • Low-voltage protection function
  • Driver IC overheat protection circuit
  • Equipped with standby (enable) pin


Applications

  • Outdoor displays
  • LCD television backlights
  • Illumination, etc.


Block Diagram

µPD168804 Block Diagram

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