LX1745

Features: > 90% Maximum Efficiency Low Quiescent Supply Current Externally Programmable Peak Inductor Current Limit For Maximum Efficiency Logic Controlled Shutdown < 1µA Shutdown Current Dynamic Output LED Current and Two LCD Bias Voltage Adjustments Via Analog Reference Or Direct PW...

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SeekIC No. : 004403451 Detail

LX1745: Features: > 90% Maximum Efficiency Low Quiescent Supply Current Externally Programmable Peak Inductor Current Limit For Maximum Efficiency Logic Controlled Shutdown < 1µA Shutdown Curre...

floor Price/Ceiling Price

Part Number:
LX1745
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: 2024/3/28

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Product Details

Description



Features:

  > 90% Maximum Efficiency
  Low Quiescent Supply Current
  Externally Programmable Peak Inductor Current Limit For Maximum Efficiency
  Logic Controlled Shutdown
  < 1µA Shutdown Current
  Dynamic Output LED Current and Two LCD Bias Voltage Adjustments Via Analog Reference Or Direct PWM Input
  20-Pin TSSOP Package



Application

  Pagers
  Smart Phones
  PDAs
  Handheld Computers
  General LCD Bias Applications
  LED Driver



Pinout

  Connection Diagram


Specifications

Supply Input Voltage ...........................................................................-0.3V to 7V
Feedback Input Voltage (VFBx) ...............................................-0.3V to VIN + 0.3V
Shutdown Input Voltage (VSHDN x) ..........................................-0.3V to VIN + 0.3V
PWM Input Amplitude (ADJx, BRT).....................................-0.3V to VIN + 0.3V
Analog Adjust Input Voltage (VADJx, VBRT)............................-0.3V to VIN + 0.3V
SRC Input Current ................................................................................ 500mARMS
Operating Temperature Range.........................................................-40°C to 85°C
Maximum Operating Junction Temperature ................................................ 150°C
Storage Temperature Range...........................................................-65°C to 150°C
Lead Temperature (Soldering 10 seconds) .................................................. 300°C



Description

The LX1745 is a compact high efficiency step-up boost regulator for driving white or color LEDs in LCD lighting applications while supplying the necessary LCD bias voltages with an\ additional two integrated boost converters.
Designed for maximum efficiency and featuring a psuedo-hysteretic PFM topology (that decreases output voltage ripple), the LX1745 minimizes system cost and condenses layout area making it ideal for PDA, smart-phone, and digital camera applications.




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