LTC1261
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LTC1261

Switched Capacitor Regulated Voltage Inverter

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Info: : PRODUCTION tooltip
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Part Details
Part Models 11
1ku List Price Starting From $2.68
Features
  • Regulated Negative Voltage from a Single Positive Supply
  • Can Provide Regulated -5V from a 3V Supply
  • REG Pin Indicates Output is in Regulation
  • Low Output Ripple: 5mV Typ
  • Supply Current: 600µA Typ
  • Shutdown Mode Drops Supply Current to 5µA
  • Up to 15mA Output Current
  • Adjustable or Fixed Output Voltages
  • Requires Only Three or Four External Capacitors
  • Available in SO-8 Packages
Additional Details
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The LTC1261 is a switched-capacitor voltage inverter designed to provide a regulated negative voltage from a single positive supply. The LTC1261CS operates from a single 3V to 8V supply and provides an adjustable output voltage from –1.25V to –8V. An on-chip resistor string allows the LTC1261CS to be configured for output voltages of –3.5V, –4V, –4.5V or –5V with no external components. The LTC1261CS8 is optimized for applications which use a 5V or higher supply or which require low output voltages. It requires a single external 0.1µF capacitor and provides adjustable and fixed output voltage options in 8-pin SO packages. The LTC1261CS requires one or two external 0.1µF capacitors, depending on input voltage. Both versions require additional external input and output bypass capacitors. An optional compensation capacitor at ADJ/COMP can be used to reduce the output voltage ripple.

Each version of the LTC1261 will supply up to 12mA output current with guaranteed output regulation of 5%. The LTC1261 includes an open-drain REG output which pulls low when the output is within 5% of the set value. Output ripple is typically as low as 5mV. Quiescent current is typically 600µA when operating and 5µA in shutdown.

The LTC1261 is available in a 14-pin narrow body SO package and an 8-pin SO package.

Applications

  • GaAs FET Bias Generators
  • Negative Supply Generators
  • Battery-Powered Systems
  • Single Supply Applications
Part Models 11
1ku List Price Starting From $2.68

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Oct 12, 2022

- 22_0251

Epoxy Change from Henkel 8290 to 8290A for 14-Lead SOIC Package

Aug 6, 2022

- 22_0173

Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]

LTC1261CS#PBF

PRODUCTION

LTC1261CS#TRPBF

PRODUCTION

Dec 14, 2023

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

LTC1261CS8#PBF

PRODUCTION

LTC1261CS8#TRPBF

PRODUCTION

LTC1261CS8-4#PBF

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LTC1261CS8-4#TRPBF

PRODUCTION

LTC1261IS8#PBF

PRODUCTION

LTC1261IS8#TRPBF

PRODUCTION

Jun 16, 2021

- 21_0026

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC1261CS8#PBF

PRODUCTION

LTC1261CS8#TRPBF

PRODUCTION

LTC1261CS8-4#PBF

PRODUCTION

LTC1261CS8-4#TR

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LTC1261CS8-4#TRPBF

PRODUCTION

LTC1261CS8-4.5#PBF

PRODUCTION

LTC1261CS8-4.5#TRPBF

PRODUCTION

LTC1261IS8#PBF

PRODUCTION

LTC1261IS8#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Nov 14, 2022

- 22_0254

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 12, 2022

- 22_0251

arrow down

Epoxy Change from Henkel 8290 to 8290A for 14-Lead SOIC Package

Aug 6, 2022

- 22_0173

arrow down

Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]

LTC1261CS#PBF

PRODUCTION

LTC1261CS#TRPBF

PRODUCTION

Dec 14, 2023

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

LTC1261CS8#PBF

PRODUCTION

LTC1261CS8#TRPBF

PRODUCTION

LTC1261CS8-4#PBF

PRODUCTION

LTC1261CS8-4#TRPBF

PRODUCTION

LTC1261IS8#PBF

PRODUCTION

LTC1261IS8#TRPBF

PRODUCTION

Jun 16, 2021

- 21_0026

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC1261CS8#PBF

PRODUCTION

LTC1261CS8#TRPBF

PRODUCTION

LTC1261CS8-4#PBF

PRODUCTION

LTC1261CS8-4#TR

PRODUCTION

LTC1261CS8-4#TRPBF

PRODUCTION

LTC1261CS8-4.5#PBF

PRODUCTION

LTC1261CS8-4.5#TRPBF

PRODUCTION

LTC1261IS8#PBF

PRODUCTION

LTC1261IS8#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Nov 14, 2022

- 22_0254

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

Software and Part Ecosystem

Software and Part Ecosystem

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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