Product
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LM2665
  • LM2665
  • LM2665
  • LM2665

LM2665

ACTIVE

1.8-V to 5.5-VIN switched capacitor voltage doubler

Texas Instruments LM2665 Product Info

1 April 2026 5

Parameters

Rating

Catalog

Iout (max) (A)

0.04

Vin (max) (V)

5.8

Vin (min) (V)

2.5

Vout (max) (V)

11

Vout (min) (V)

1.8

Features

Enable, Unregulated

Operating temperature range (°C)

-40 to 85

Iq (typ) (A)

0.00065

Package

SOT-23 (DBV)-6-8.12 mm² 2.9 x 2.8

Features

  • Input Voltage for Voltage Doubler: 2.5 V to 5.5 V
  • Voltage Divider Splits Voltage: 1.8 V to 11 V
  • Doubles or Splits Input Supply Voltage
  • 12-Ω Typical Output Impedance
  • 90% Typical Conversion Efficiency at 40 mA
  • 1-µA Typical Shutdown Current
  • Input Voltage for Voltage Doubler: 2.5 V to 5.5 V
  • Voltage Divider Splits Voltage: 1.8 V to 11 V
  • Doubles or Splits Input Supply Voltage
  • 12-Ω Typical Output Impedance
  • 90% Typical Conversion Efficiency at 40 mA
  • 1-µA Typical Shutdown Current

Description

The LM2665 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of 2.5 V to 5.5 V. Two low-cost capacitors and a diode (needed during start-up) are used in this circuit to provide up to 40 mA of output current. The LM2665 can also work as a voltage divider to split a voltage in the range of 1.8 V to 11 V in half.

The LM2665 operates at 160-kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 650 µA (operating efficiency greater than 90% with most loads) and
1-µA typical shutdown current, the LM2665 provides ideal performance for battery powered systems.

For all available packages, see the orderable addendum at the end of the data sheet.

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