Voltage Converter. LM2665 Datasheet

LM2665 Converter. Datasheet pdf. Equivalent


Part LM2665
Description Switched Capacitor Voltage Converter
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LM2665 Switched Capacitor Voltage Converter November 1999 LM2665 Datasheet
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LM2665
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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 orderable addendum at
the end of the data sheet.
Voltage Doubler
Splitting Vin in Half
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



LM2665
LM2665
SNVS009H – NOVEMBER 1999 – REVISED MARCH 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics ............................................. 5
7 Parameter Measurement Information .................. 7
7.1 Test Circuit ................................................................ 7
8 Detailed Description .............................................. 8
8.1 Overview ................................................................... 8
8.2 Functional Block Diagram ......................................... 8
8.3 Feature Description................................................... 8
8.4 Device Functional Modes.......................................... 8
9 Application and Implementation .......................... 9
9.1 Application Information.............................................. 9
9.2 Typical Applications .................................................. 9
10 Power Supply Recommendations ..................... 12
11 Layout................................................................... 13
11.1 Layout Guidelines ................................................. 13
11.2 Layout Example .................................................... 13
12 Device and Documentation Support ................. 14
12.1 Community Resources.......................................... 14
12.2 Trademarks ........................................................... 14
12.3 Electrostatic Discharge Caution ............................ 14
12.4 Glossary ................................................................ 14
13 Mechanical, Packaging, and Orderable
Information ........................................................... 14
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision G (July 2015) to Revision H
Page
• Added several new "Applications" to page 1.......................................................................................................................... 1
Changes from Revision F (May 2013) to Revision G
Page
• Added Pin Configuration and Functions section, ESD Rating table, Feature Description , Device Functional Modes,
Application and Implementation, Power Supply Recommendations, Layout, Device and Documentation Support, and
Mechanical, Packaging, and Orderable Information sections ................................................................................................ 1
Changes from Revision E (May 2013) to Revision F
Page
• Changed layout of National Data Sheet to TI format ........................................................................................................... 12
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