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LX1742

Features: 80% Typical Efficiency 80µA Typical Quiescent Supply Current Externally Programmable Peak Inductor Current Limit For Maximum EfficiencyLogic Controlled Shutdown< 1.0 µA Shutdown Current (typ)Dynamic Output Voltage Adjustment Via Analog Reference Or Direct PWM Input 8-Pin ...

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SeekIC No. : 004403449 Detail

LX1742: Features: 80% Typical Efficiency 80µA Typical Quiescent Supply Current Externally Programmable Peak Inductor Current Limit For Maximum EfficiencyLogic Controlled Shutdown< 1.0 µA Shu...

LX1742 Data Sheet

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Part Number:
LX1742
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: 2024/4/25

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Product Details

Description



Features:

  80% Typical Efficiency 80µA Typical Quiescent Supply Current
Externally Programmable Peak Inductor Current Limit For Maximum Efficiency
Logic Controlled Shutdown
< 1.0 µA Shutdown Current (typ)
Dynamic Output Voltage Adjustment Via Analog Reference Or Direct PWM Input
8-Pin MSOP Package


Application

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


Pinout

Connection Diagram


Specifications

Supply Voltage (VIN) ..................................................................................... -0.3V to 7.0V
Output Voltage (OUT)................................................................................................25.0V
Feedback Input Voltage (VFB) ..............................................................-0.3V to VIN + 0.3V
Shutdown Input Voltage (VSHDN) ........................................................-0.3V to VIN + 0.3V
PWM Input Amplitude .........................................................................-0.3V to VIN + 0.3V
Analog Adjust Input Voltage (VADJ).................................................................-0.3V to VIN
Source Input Current (ISRC).................................................................................500mARMS
Operating Junction Temperature................................................................................ 150°C
Storage Temperature Range.........................................................................-65°C to 150°C
Peak Package Solder Reflow Temp. (40 second max. exposure).................. 260°C (+0, -5)


Description

The LX1742 is a compact high efficiency step-up boost controller. Featuring a pseudo-hysteretic pulse frequency modulation topology, the LX1742 was designed for maximum efficiency, reduced board size, and minimal cost.

Utilizing an internal N-Channel MOSFET, the LX1742 offers designers maximum flexibility with respect to efficiency and cost. The LX1742 provides several design enhancements that improve overall performance under very light load currents by implementing control circuitry that is optimized for portable systems - thus providing a quiescent supply current of only 80µA (typ) and a shutdown current of less than 1µA.




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