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DC/DC converters

LM2621

現行

1.2V 至 14V 輸入電壓、1A 負載電流、升壓 DC-DC

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產品規格表

LM2621

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Boost Vin (max) (V) 14 Vin (min) (V) 1.2 Vout (max) (V) 14 Vout (min) (V) 1.24 Switch current limit (typ) (A) 2.85 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00008 Duty cycle (max) (%) 80
Rating Catalog Topology Boost Vin (max) (V) 14 Vin (min) (V) 1.2 Vout (max) (V) 14 Vout (min) (V) 1.24 Switch current limit (typ) (A) 2.85 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00008 Duty cycle (max) (%) 80
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • 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
  • 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

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.

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.
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重要文件 類型 標題 格式選項 日期
* Data sheet LM2621 Low Input Voltage, Step-Up DC-DC Converter datasheet (Rev. D) PDF | HTML 2015年 12月 3日
More literature Die D/S LM2621 MWC Low Input Voltage, Step-Up Dc-Dc 2012年 9月 20日

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LM2621EVAL — 低輸入電壓、升壓 DC-DC 評估模組

Low Input Voltage, Step-Up DC-DC

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This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.

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