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LM2621-低输入电压,升压 DC-DC
LM2621-转换器(集成开关)-DC/DC开关稳压器-电源管理
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LM2621 - 低输入电压,升压 DC-DC

LM2621是TI公司(德州仪器)的一款转换器(集成开关)产品,LM2621是低输入电压,升压 DC-DC,本站介绍了LM2621的产品说明、应用、特性等,并给出了与LM2621相关的TI元器件型号供参考.

LM2621 - LM2621 Low Input Voltage, Step-Up DC-DC Converter - TI德州仪器(Texas Instruments)

产品特性
  • Small VSSOP8 Package (Half the Footprint of Standard 8-Pin SOIC Package)
  • 1.09-mm Package Height
  • Up to 2-MHz Switching Frequency
  • 1.2-V to 14-V Input Voltage
  • 1.24-V to 14-V Adjustable Output Voltage
  • Up to 1A Load Current
  • 0.17-Ω Internal MOSFET
  • Up to 90% Regulator Efficiency
  • 80-µA Typical Operating Current
  • < 2.5-µA Specified Supply Current In Shutdown
产品应用
  • PDAs, Cellular Phones
  • 2-Cell and 3-Cell Battery-Operated Equipment
  • PCMCIA Cards, Memory Cards
  • Flash Memory Programming
  • TFT/LCD Applications
  • 3.3-V to 5.0-V Conversion
  • GPS Devices
  • Two-Way Pagers
  • Palmtop Computers
  • Hand-Held Instruments
产品说明

The LM2621 is a high efficiency, step-up DC-DC switching regulator for battery-powered and low input voltage systems. It accepts an input voltage between 1.2 V and 14 V and converts it into a regulated output voltage. The output voltage can be adjusted between 1.24 V and 14 V. It has an internal 0.17-Ω N-Channel MOSFET power switch. Efficiencies up to 90% are achievable using the LM2621.

The high switching frequency (adjustable up to 2 MHz) of the LM2621 allows for tiny surface mount inductors and capacitors. Because of the unique constant-duty-cycle gated oscillator topology very high efficiencies are realized over a wide load range. The supply current is reduced to 80 µA because of the BiCMOS process technology. In the shutdown mode, the supply current is less than 2.5 µA.

The LM2621 is available in a VSSOP-8 package. This package uses half the board area of a standard 8-pin SOIC and has a height of just 1.09 mm.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (NOM)
LM2621VSSOP (8)3.00 mm x 3.00 mm
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