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AC/DC & DC/DC converters (integrated FET)

LM2681

現行

20-mA 切換式電容器電壓倍增器

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產品規格表

LM2681

現行
產品規格表 立即訂購

產品詳細資料

Iout (max) (A) 0.02 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Type Charge pump Switching frequency (min) (kHz) 40 Switching frequency (max) (kHz) 80 Vout (min) (V) 1.8 Vout (max) (V) 11 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00055
Iout (max) (A) 0.02 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Type Charge pump Switching frequency (min) (kHz) 40 Switching frequency (max) (kHz) 80 Vout (min) (V) 1.8 Vout (max) (V) 11 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00055
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Doubles or Splits Input Supply Voltage
  • SOT-23 6-Lead Package
  • 15Ω Typical Output Impedance
  • 90% Typical Conversion Efficiency at 20 mA

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  • Doubles or Splits Input Supply Voltage
  • SOT-23 6-Lead Package
  • 15Ω Typical Output Impedance
  • 90% Typical Conversion Efficiency at 20 mA

All trademarks are the property of their respective owners.

The LM2681 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of +2.5V to +5.5V. Two low cost capacitors and a diode (needed during start-up) is used in this circuit to provide up to 20 mA of output current. The LM2681 can also work as a voltage divider to split a voltage in the range of +1.8V to +11V in half.

The LM2681 operates at 160 kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 550 µA (operating efficiency greater than 90% with most loads) the LM2681 provides ideal performance for battery powered systems. The device is in a SOT-23, 6-lead package.

The LM2681 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of +2.5V to +5.5V. Two low cost capacitors and a diode (needed during start-up) is used in this circuit to provide up to 20 mA of output current. The LM2681 can also work as a voltage divider to split a voltage in the range of +1.8V to +11V in half.

The LM2681 operates at 160 kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 550 µA (operating efficiency greater than 90% with most loads) the LM2681 provides ideal performance for battery powered systems. The device is in a SOT-23, 6-lead package.
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類型 標題 日期
* Data sheet LM2681 Switched Capacitor Voltage Converter datasheet (Rev. B) 2013年 5月 2日

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