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FAN5606

Features: • Drives Up to Six LEDs in Series• Pulse Skip PWM Mode of Operation of the Boost Circuit• Up to 90% Peak Efficiency• No External Schottky Diode Required• Up to 25mA Output• Built-in DAC for Digital Brightness Control• LED's Current Can be Duty-Cy...

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SeekIC No. : 004340427 Detail

FAN5606: Features: • Drives Up to Six LEDs in Series• Pulse Skip PWM Mode of Operation of the Boost Circuit• Up to 90% Peak Efficiency• No External Schottky Diode Required• Up t...

FAN5606 Data Sheet

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Part Number:
FAN5606
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: 2024/11/20

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Product Details

Description



Features:

• Drives Up to Six LEDs in Series
• Pulse Skip PWM Mode of Operation of the Boost Circuit
• Up to 90% Peak Efficiency
• No External Schottky Diode Required
• Up to 25mA Output
• Built-in DAC for Digital Brightness Control
• LED's Current Can be Duty-Cycle-Modulated
• Digital, Analog, and PWM Brightness Control
• 2.7V to 5.5V Input Voltage Range
• 0.5MHz Operating Frequency (8MHz internal clock)
• Soft Start
• Low Shutdown Current: ICC< 1A
• LED Short Circuit Protection
• Minimal External Components Needed
• Available in an 8-lead MLP Package


Application

• Cell Phones
• Handheld Computers
• PDAs, DSCs, MP3 Players
• Keyboard Backlights
• LED Display


Pinout

Connection Diagram


Specifications

Parameter Min Typ Max Unit
VIN, A, B Voltage to GND -0.3   6.5 V
VOUT, CAT Voltage to GND -0.3   24 V
Any LED Short Circuit Duration (Anode to Cathode)     Indefinite  
Lead Soldering Temperature (10 seconds)     300 °C
Thermal Resistancejc   8   °C/W
Operating Junction Temperature Range     150 °C
Storage Temperature Range -55   150 °C
Electrostatic Discharge (ESD) Protection (Note 1,2) HBM 4     kV
CDM 1    



Description

The FAN5606 LED driver generates regulated output currents from a battery with input voltage varying between 2.7V to 5V. An internal NMOS switch drives an external inductor, and a Schottky diode delivers the inductor's stored energy to the load. Soft start circuitry prevents excessive current drawn from the supply during power on. Any number of LEDs can be connected in series as long as the summed forward voltages do not lead to exceeding the specified operating output voltage range.

In the FAN5606 device, the internal two-bit D/A converters provide programmability of the output channel current. Analog programming of the output current is also possible in the FAN5606. To do this, ground the "B" pin and connect a resistor between the "A" pin and a fixed supply voltage. The output current can then be programmed to any desired value within its specified range. The analog version uses a single external resistor to set the current, and to turn the device ON and OFF. The device is available in an 8-lead MLP package.




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