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T6313A

Features: • 20mA Full Scale Current for each LED• Power efficency up to 93%• 32 levels for brightness• 2 wires interface• Low Noise Constant Frequency Operation• High Accuracy Brightness Matching• White LED Backlighting• 0.5% LED current matchingR...

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SeekIC No. : 004511337 Detail

T6313A: Features: • 20mA Full Scale Current for each LED• Power efficency up to 93%• 32 levels for brightness• 2 wires interface• Low Noise Constant Frequency Operation• ...

T6313A Data Sheet

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Part Number:
T6313A
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: 2024/12/21

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Product Details

Description



Features:

• 20mA Full Scale Current for each LED
• Power efficency up to 93%
• 32 levels for brightness
• 2 wires interface
• Low Noise Constant Frequency Operation
• High Accuracy Brightness Matching
• White LED Backlighting
• 0.5% LED current matching
• Automatic Soft-Start
• No External Inductors, Schottky, or Zener Diode and Resistor Required
• 500KHz Switching Frequency (1MHz optional)
• 2.7V to 5.5V supply voltage
• Shutdown current is less 1uA
• Temperature Range -40 to 85°C
• 16-Pin QFN


Application

· Cellular Phones
· Portable Communication Devices
· Handheld devices
· Digital Cameras
· PDAs
· LED/Display Back Light Driver
· LEDs for Camera Flash


Pinout

Connection Diagram


Specifications

IN, OUT, EN to GND........................-0.3V to 6V
LED1 ~4 to GND ................-0.3V to (Vin+0.3V)
Operating Temperature............... -40 to 85°C
Storage Temperature.................-40 to 150°C


Description

The T6313A is a charge pump DC/DC converter driving a constant current up to 20mA for each LED of total four LEDs. It is a high efficiency device that is up to 93%, and it would be a suitable driving device for LED back light application. The T6313A operates in a 1.5x charge pump mode based on input voltage from 2.7v to 5.5v. Operation frequency is at fixed high frequencies either 500KHz or 1MHz typically. It can drive 4 white LEDs connected in parallel and provides tightly matched regulated current to achieve uniformity of brightness in LCD backlighting applications.

The T6313A uses two input pins to enable, disable, and set the LED drive current for one of 32 levels of brightness. Also has a built-in softstart circuitry to prevent excessive inrush current during start-up. A very low shutdown current feature and a low quiescent current will consume very little power and allow the device to operate in a very high efficiency. The T6313A is available in 16-pin QFN packages.




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