LTC1682
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LTC1682

Doubler Charge Pumps with Low Noise Linear Regulator

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 24
1ku List Price Starting From $2.48
Features
  • Low Output Noise: 60µVRMS (100kHz BW)
  • Adjustable or Fixed Boosted Output
  • Adjustable Output Voltage Range: 2.5V to 5.5V
  • Fixed Output Voltages: 3.3V, 5V
  • Wide Input Voltage Range: 1.8V to 4.4V
  • Uses Small Ceramic Capacitors
  • No Inductors Required
  • Output Current up to 50mA
  • 550kHz Switching Frequency
  • Low Operating Current: 150µA
  • Low Shutdown Current: 1µA
  • Internal Thermal Shutdown and Current Limiting
  • Available in 8-Pin MSOP and SO Packages
Additional Details
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The LTC1682/LTC1682-3.3/LTC1682-5 are doubler charge pumps with an internal low noise, low dropout (LDO) linear regulator. These parts are designed to provide a low noise boosted supply voltage for powering noise sensitive devices such as high frequency VCOs in wireless applications.

An internal doubler charge pump converts a 1.8V to 4.4V input to a boosted output, while the internal LDO regulator converts the boosted voltage to a low noise regulated output. The adjustable version allows the user to set VOUT via external resistors connected to FB. The regulator is capable of supplying up to 50mA of output current. Shutdown reduces the supply current to < 5µA, removes the load from VIN by disabling the regulator and discharges VOUT to ground through a 100Ω switch.

The LTC1682 LDO regulator is stable with only 2µF on the output. Small ceramic capacitors can be used, reducing PC board area.

The LTC1682/LTC1682-3.3/LTC1682-5 are short-circuit and over temperature protected. The parts are available in 8-pin MSOP and SO packages.

Applications

  • VCO Power Supplies in Cellular Phones
  • 2-Way Pagers
  • Wireless PCMCIA Cards
  • Portable Medical Instruments
  • Low Power Data Acquisition
  • Remote Transmitters
Part Models 24
1ku List Price Starting From $2.48

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Documentation

Documentation

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

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Feb 3, 2020

- 20_0128

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC1682CMS8#PBF

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LTC1682CMS8#TRPBF

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LTC1682CMS8-3.3#PBF

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Oct 12, 2022

- 22_0255

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

LTC1682CS8#PBF

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Jun 16, 2021

- 21_0026

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

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Feb 3, 2020

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Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC1682CMS8#PBF

PRODUCTION

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PRODUCTION

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PRODUCTION

Oct 12, 2022

- 22_0255

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

LTC1682CS8#PBF

PRODUCTION

LTC1682CS8#TRPBF

PRODUCTION

LTC1682CS8-3.3#PBF

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LTC1682CS8-3.3#TRPBF

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LTC1682IS8-3.3#TRPBF

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LTC1682IS8-5#PBF

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LTC1682IS8-5#TRPBF

PRODUCTION

Jun 16, 2021

- 21_0026

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

LTC1682CS8#PBF

PRODUCTION

LTC1682CS8#TRPBF

PRODUCTION

LTC1682CS8-3.3#PBF

PRODUCTION

LTC1682CS8-3.3#TRPBF

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LTC1682CS8-5#PBF

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LTC1682CS8-5#TRPBF

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LTC1682IS8#TRPBF

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LTC1682IS8-3.3#PBF

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LTC1682IS8-3.3#TRPBF

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LTC1682IS8-5#PBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 4

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DC249A-C

LTC1682CMS8-3.3 | Doubler Charge Pump with Linear Regulator, Fixed, 2.0 to 4.4VIN, 3.3VOUT @ 50mA

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DC249A-B

LTC1682CMS8-5 | Doubler Charge Pump with Linear Regulator, Fixed, 2.7 to 4.4VIN, 5.0VOUT @ 50mA

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DC332A

LTC1682CMS8 | White LED Driver, 3.0V to 4.2V Input, 75mA Output (5 White LEDs)

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DC249A-A

LTC1682CMS8 | Doubler Charge Pump with Linear Regulator, Adjustable, 1.8 to 4.4VIN, 2.5 to 5.5VOUT @ 50mA

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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