LM2665

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2665 SNVS009H – NOVEMBER 1999 – REVISED MARCH 2016 LM2665 Switched Capacitor Voltage Converter 1 Features 1 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 2 Applications Cellular Phones Pagers PDAs Operational Amplifier Power Suppliers Interface Power Suppliers Handheld Instruments Fire Detection and Notification Industrial Handheld Radios Blood Pressure Monitors 3 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. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM2665 SOT-23 (6) 2.90 mm × 1.60 mm (1) For all available packages, see the orde...