LM2681

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20-mA-Spannungsverdoppler mit geschaltetem Kondensator

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Datenblatt

document-pdfAcrobat LM2681 Switched Capacitor Voltage Converter datasheet (Rev. B) (Englisch)

LM2681

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

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

All trademarks are the property of their respective owners.

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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	Typ	Titel		Datum
*	Data sheet	LM2681 Switched Capacitor Voltage Converter datasheet (Rev. B)		02 Mai 2013

Design und Entwicklung

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LM2681

20-mA-Spannungsverdoppler mit geschaltetem Kondensator

LM2681

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