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LM3590

Features: `Drives up to 3 stacked white LEDs`6.0V-12.6V input voltage range`Up to 20mA LED output current`Excellent LED current matching guaranteed by series configuration`Single connection to the White LEDs in the display module`Tightly controlled programmable current source`Low shutdown current ...

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SeekIC No. : 004395392 Detail

LM3590: Features: `Drives up to 3 stacked white LEDs`6.0V-12.6V input voltage range`Up to 20mA LED output current`Excellent LED current matching guaranteed by series configuration`Single connection to the W...

LM3590 Data Sheet

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Part Number:
LM3590
Supply Ability:
5000

Price Break

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

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Upload time: 2024/12/26

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Product Details

Description



Features:

`Drives up to 3 stacked white LEDs
`6.0V-12.6V input voltage range
`Up to 20mA LED output current
`Excellent LED current matching guaranteed by series configuration
`Single connection to the White LEDs in the display module
`Tightly controlled programmable current source
`Low shutdown current (0.1A typ.)
`PWM brightness control
`Very small solution size
`SOT23-5 package: 3mm x 3mm x 1.0mm (LxWxH)


Application

· White LED Display Backlights
· Keypad Backlights
· General purpose constant current driver for high
   forward-voltage LEDs


Specifications

VIN .................................−0.3 to 13.0V Max
EN  ...............................−0.3 to (VIN+0.3V) w/
.......................................13.0V max
Maximum Junction Temperature
(TJMAX)   ....................................150°C
Storge Temperature  .......................−65°C to +150°C
Maximum Lead Temperature   .........................260°C
(Soldering, 5 sec.)
ESD Rating (Note 3)
Human Body Model  ...............................1.5kV
Machine Model ..................................200V



Description

The LM3590 is a White LED constant current driver capable of supplying up to 3 White LEDs connected in series with 20mA. This device operates over a wide 6V-12.6V input voltage range. The output can accomodate LEDs with a combined forward voltage of up to 11.5V, from a 12V input supply. The LED drive current is programmed by using an external resistor on the ISET pin.

LED brightness can be linearly varied up to the programmed LED current by applying a Pulse Width Modulated (PWM) signal to the EN pin of the device. The LED output current of the LM3590 is tightly controlled over temperature and voltage. LED Current matching is guaranteed due to the series configuration of the LEDs. The series topology also simplifies the connection between the White LEDs in the display module and the LM3590 since only one connection is required.

The LM3590 typically draws only 50A when operating in the no-load condition and draws less than 0.1A when the device is shut down.

The LM3590 is available in a small 5-pin SOT23 package.




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