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NJU6053

Features: · Drives up to 12 white LEDs (4 series x 3 parallels)· Controls 3 outputs separately - VSW = 18.0V(Max), IOUT = 40mA· Built-in PWM Dimming Control - (Selectable 8 out of 64 steps)· Built-in Luminance Sensor Control (Power Supply for Sensor & A/D converter) - (No MPU-access requ...

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SeekIC No. : 004434406 Detail

NJU6053: Features: · Drives up to 12 white LEDs (4 series x 3 parallels)· Controls 3 outputs separately - VSW = 18.0V(Max), IOUT = 40mA· Built-in PWM Dimming Control - (Selectable 8 out of 64 steps)· B...

NJU6053 Data Sheet

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Part Number:
NJU6053
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· Drives up to 12 white LEDs (4 series x 3 parallels)
· Controls 3 outputs separately
  - VSW = 18.0V(Max), IOUT = 40mA
· Built-in PWM Dimming Control
  - (Selectable 8 out of 64 steps)
· Built-in Luminance Sensor Control (Power Supply for Sensor & A/D converter)
  - (No MPU-access required after initial setting)
· Built-in Temperature Compensation Circuit to Suppress the Characteristic Degradation of LEDs
· Uses Small Inductor and Capacitors
· 1.8V to 3.6V Operating Voltage for Logic Circuits (VDDL)
· 3.0V to 5.5V Operating Voltage for Step-up Circuits (VDD)
· CMOS Technology
· Package : QFN28


Pinout

Connection Diagram


Specifications

PARAMETERS SYMBOL CONDITIONS RATINGS UNIT NOTE
VDD Power Supply VDD -0.3 to +6 V
VDDL Power Supply VDDL -0.3 to VDD V
Input Voltage VIN1 CX/TCLK, REF, FB,SENS terminals -0.3 to VDD+0.3 V
Input Voltage VIN2 REQ, DATA, SCK, RSTb terminals -0.3 to VDDL+0.3 V
Switch Voltage VSW SW terminal +18.0 V 3
Power Dissipation Pd T.B.D. mW 4
Operating Temperature Topr -40 to +85 °C
Storage Temperature Tstg -55 to +125 °C

NOTE1) All voltages are relative to VSS = 0V reference.
NOTE2) Do not exceed the absolute maximum ratings, otherwise the stress may cause a permanent damage to the IC. It is also recommended that the IC be used in the range specified in the DC electrical characteristics, or the electrical stress may cause mulfunctions and affect the reliability.
NOTE3) The switch voltage VSW is the highest voltage in the system. This voltage must not exceed the absolute maximum rating.




Description

The NJU6053 is a white LED driver with an automatic dimming control. It contains an output driver, a PWM controller, a luminance sensor control (power supply for sensor & A/D converter), a step-up DC/DC converter, a serial interface, etc.

The NJU6053 can turn three independent lighting circuits on/off separately or simultaneously with instruction.

The output driver NJU6053 ensures a 40mA maximum capability which allows the connection of 12 white LEDs (4 series x 3 parallels). Depending on the ambient light sensed with an external luminance sensor, the PWM controller controls PWM duty in 8 steps preselected out of 64 steps.

In addition, the frequency of the DC/DC converter is high so that it permits the use of small, low-profile inductors and capacitors to minimize the footprint in space-conscious applications.

All of these benefits make the NJU6053 suitable for the battery-powered portable applications such as a cellular phone, a camcorder, PDA, etc.




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