LTC1144
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LTC1144

Switched-Capacitor Wide Input Range Voltage Converter with Shutdown

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Info: : PRODUCTION tooltip
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Part Details
Part Models 6
1ku List Price Starting From $3.54
Features
  • Wide Operating Supply Voltage Range: 2V to 18V
  • Boost Pin (Pin 1) for Higher Switching Frequency
  • Simple Conversion of 15V to –15V Supply
  • Low Output Resistance: 120Ω Maximum
  • Power Shutdown to 8μA with SHDN Pin
  • Open Circuit Voltage Conversion Efficiency: 99.9% Typical
  • Power Conversion Efficiency: 93% Typical
  • Easy to Use
Additional Details
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The LTC1144 is a monolithic CMOS switched-capacitor voltage converter. It performs supply voltage conversion from positive to negative from an input range of 2V to 18V, resulting in complementary output voltages of –2V to –18V. Only two noncritical external capacitors are needed for the charge pump and charge reservoir functions.

The converter has an internal oscillator that can be overdriven by an external clock or slowed down when connected to a capacitor. The oscillator runs at a 10kHz frequency when unloaded. A higher frequency outside the audio band can also be obtained if the Boost Pin is tied to V+. The SHDN  pin reduces supply current to 8μA and can be used to save power when the converter is not in use.

The LTC1144 contains an internal oscillator, divide-by-two, voltage level shifter, and four power MOSFETs. A special logic circuit will prevent the power N-channel switch substrate from turning on.

Applications

  • Conversion of 15V to ±15V Supplies
  • Inexpensive Negative Supplies
  • Data Acquisition Systems
  • High Voltage Upgrade to LTC1044 or 7660
  • Voltage Division and Multiplications
  • Automotive Applications
  • Battery Systems with Wall Adapter/Charger
Part Models 6
1ku List Price Starting From $3.54

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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LTC1144CS8#TRPBF
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LTC1144IN8#PBF
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

LTC1144CN8#PBF

PRODUCTION

LTC1144IN8#PBF

PRODUCTION

Nov 14, 2022

- 22_0254

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

LTC1144CS8#PBF

PRODUCTION

LTC1144CS8#TRPBF

PRODUCTION

LTC1144IS8#PBF

PRODUCTION

LTC1144IS8#TRPBF

PRODUCTION

Jun 16, 2021

- 21_0026

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

LTC1144CS8#PBF

PRODUCTION

LTC1144CS8#TRPBF

PRODUCTION

LTC1144IS8#PBF

PRODUCTION

LTC1144IS8#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

arrow down

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

arrow down

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

LTC1144CN8#PBF

PRODUCTION

LTC1144IN8#PBF

PRODUCTION

Nov 14, 2022

- 22_0254

arrow down

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

LTC1144CS8#PBF

PRODUCTION

LTC1144CS8#TRPBF

PRODUCTION

LTC1144IS8#PBF

PRODUCTION

LTC1144IS8#TRPBF

PRODUCTION

Jun 16, 2021

- 21_0026

arrow down

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

LTC1144CS8#PBF

PRODUCTION

LTC1144CS8#TRPBF

PRODUCTION

LTC1144IS8#PBF

PRODUCTION

LTC1144IS8#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & 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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