AIC1648

Features: `􀁺 Built-In Open Circuit Protection`􀁺 Over Voltage Protection`􀁺 Efficiency Up to 84% at VIN=4.2V, 3LEDs, ILED=20mA`􀁺 1.2MHz Fixed Switching Frequency`􀁺 Drives Up to 5LEDs in series`􀁺 Low Supply Current: 70A`􀁺 Matches LED Curr...

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SeekIC No. : 004279060 Detail

AIC1648: Features: `􀁺 Built-In Open Circuit Protection`􀁺 Over Voltage Protection`􀁺 Efficiency Up to 84% at VIN=4.2V, 3LEDs, ILED=20mA`􀁺 1.2MHz Fixed Switching Frequency`&#...

floor Price/Ceiling Price

Part Number:
AIC1648
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: 2024/5/31

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Product Details

Description



Features:

`􀁺 Built-In Open Circuit Protection
`􀁺 Over Voltage Protection
`􀁺 Efficiency Up to 84% at VIN=4.2V, 3LEDs, ILED=20mA
`􀁺 1.2MHz Fixed Switching Frequency
`􀁺 Drives Up to 5LEDs in series
`􀁺 Low Supply Current: 70A
`􀁺 Matches LED Current
`􀁺 Requires Tiny Inductor and Capacitors
`􀁺 Tiny SOT-23-6 Package





Application

·􀁺 Cellular Phones
·􀁺 PDAs
·􀁺 DSCs
·􀁺 Handheld Devices
·􀁺 White LED Display Backlighting





Pinout

  Connection Diagram




Specifications

Input Voltage (VIN)............. .... 6V
SW Voltage .....................33V
FB Voltage 6V SHDNVoltage .............6V
SHDNVoltage ....................6V
OVP Voltage................ .... 34V
Operating Temperature Range ... .40°C to 85°C
Maximum Junction Temperature .........125°C
Storage Temperature Range .....65°C to 150°C
Lead Temperature (Soldering, 10 sec) ......260°C

Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.






Description

AIC1648 is a fixed frequency step-up DC/DC converter designed to drive white LEDs with a constant current to provide backlight in hand-held devices. Series connection of LEDs provides identical LED currents resulting in uniform brightness. This configuration eliminates the need of ballast resistors. The built-in open load protection prevents the damage resulting from an open circuit condition. Low 95mV feedback voltage minimizes power loss in the current setting resistor for better efficiency.

AIC1648 is a step-up PWM converter, which includes an internal N-channel MOSFET switch for high efficiency. The high switching frequency, 1.2MHz, allows the use of tiny external components.
AIC1648 is available in a space-saving, 6-lead SOT-23-6 package.






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