LP3907TL-JJCP
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LP3907TL-JJCP

  • Category:converter
  • Product Name:Miniature step DC-DC converter
  • Manufacturers:NSC
  • Production Batch Number:10+
  • Encapsulation:SOT-23
  • Stock Status:There is stock
  • Stock Quantity:6000
  • Minimum order quantity: 1
  • Details:Click here to find pdf information on LP3907TL-JJCP
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  • Product introduction

peculiarity

  • VOUT= 0.7V ADJ (minutes), 1.2, 1.5, 1.6, 1.8, 1.875, 2.5, 3.3V
  • 2.5V 5.5V
  • 15μA (typical) quiescent current
  • Maximum load capacity of 350 mA
  • 1 MHz PWM fixed switching frequency (typical)
  • Automatic PFM/PWM mode switching
  • A fixed output voltage adjustable version is also available
  • SOT23-5 package
  • Low pressure drop operation - 100% duty cycle mode
  • High efficiency internal synchronous rectification
  • Internal soft start
  • 0.1μA (typical) shutdown current
  • Operates from a single lithium-ion battery or 3-cell NiMH/NiCd battery
  • Only three small external components surface mount (one inductor, two ceramic capacitors)
  • Current overload protection

illustrate

The LM3670 step-down DC-DC converter is optimized for an ultra-low voltage circuit powered by a single Li-ion battery or 3-cell NiMH/NiCd battery. It delivers up to 350 mA of load current, exceeding the input voltage range from 2.5V to 5.5V. Several different fixed output voltages are available, as well as an adjustable output voltage version (see ordering information).

The device provides superior functionality and sophisticated power management systems for mobile phones and similar portable applications. Intelligent automatic switching between PWM low noise and PFM low current modes provides improved system control. A fixed frequency of 1 MHz (typical) during full power operation. PWM mode[Similar_To] 70 mA to 350 mA maximum drive load with up to 95% efficiency. Hysteresis PFM mode extends battery life by reducing quiescent current to 15μA (typical) at light loads and system standby. Internal synchronous rectification (1 mA and 100 mA loads provide 90% to 95% typical.) High efficiency. In shutdown mode (enable pin pull-low) the device shuts down and power consumption is reduced to 0.1μA (typical).

The LM3670 is a SOT23-5 package. - 1 MHz (typical) - The high switching frequency allows the use of tiny surface mount components. Only three external surface mount components, an inductor and two ceramic capacitors, are required.


apply

  • mobile phone
  • Handheld
  • Pocket PC
  • Pocket PC
  • Portable instrument
  • Battery-powered devices

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