LTC3290
Info : RECOMMENDED FOR NEW DESIGNS
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LTC3290

High Voltage Boost Charge Pump

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 10
1ku List Price Starting From $2.74
Features
  • Wide Input Range: 4.5V to 55V VIN/VAUX
  • Reverse Input Protection to –55V
  • Split Input Supplies for High Efficiency Boost Ratios
  • IOUT Up to 50mA
  • 15µA VIN Quiescent Current
  • 1µA VAUX Quiescent Current
  • Stable with Ceramic Capacitors
  • Short-Circuit/Thermal Protection
  • Thermally Enhanced 10-Pin MSOP Package
Additional Details
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The LTC3290 is a high voltage boost charge pump with a wide 4.5V to 55V input voltage range that can deliver up to 50mA of output current.

When the VSET pin is grounded, the LTC3290 operates as a standard boost charge pump, boosting the VOUT output to a maximum of the sum of the VIN and VAUX input supplies. An external resistor divider can be used on the VOUT, FB and GND pins to set the output voltage to any value between 1V and VIN + VAUX with hysteretic Burst Mode operation.

Alternatively, the device can be configured in a VIN tracking mode, in which the VOUT pin regulates at a fixed offset above the VIN pin. The offset voltage is programmed with external resistors, one from the VOUT to the VSET pin and the other from the FB pin to GND. The maximum output voltage is limited to VIN + VAUX.

The LTC3290 is available in a thermally enhanced 10-pin MSOP package.

Applications

  • High Efficiency General Purpose High Voltage Boost Supplies 
  • High Side N-FET Driver
  • Industrial/Automotive Power Switching 
  • VIN Tracking Supply
Part Models 10
1ku List Price Starting From $2.74

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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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Jun 5, 2024

- 24_0003

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

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Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

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Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Jun 5, 2024

- 24_0003

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LTC3290EMSE#PBF

PRODUCTION

LTC3290EMSE#TRPBF

PRODUCTION

LTC3290HMSE#PBF

PRODUCTION

LTC3290HMSE#TRPBF

PRODUCTION

LTC3290IMSE#PBF

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LTC3290IMSE#TRPBF

PRODUCTION

LTC3290MPMSE#PBF

PRODUCTION

LTC3290MPMSE#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0130

arrow down

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3290EMSE#PBF

PRODUCTION

LTC3290EMSE#TRPBF

PRODUCTION

LTC3290HMSE#PBF

PRODUCTION

LTC3290HMSE#TRPBF

PRODUCTION

LTC3290IMSE#PBF

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LTC3290IMSE#TRPBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC2585A

LTC3290 Demo Board | High Voltage Boost Charge Pump

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DC2585A

LTC3290 Demo Board | High Voltage Boost Charge Pump

LTC3290 Demo Board | High Voltage Boost Charge Pump

Product Detail

Demonstration circuit 2585A contains two circuits featuring the LTC3290. The top LTC3290 circuit operates as a high voltage boost by using the power from two input supplies to create a higher output voltage. The bottom LTC3290 circuit operates as a VIN tracking supply by using the power from an auxiliary supply input (VAUX) and regulating a voltage above the VIN supply input. The wide VIN/VAUX range allows two voltages to be used together to efficiently create a third voltage, boost from a single supply to boost, or regulate above a variable input voltage like a battery.

The high efficiency boost circuit has three selectable outputs, 15V, 24V, or 42V. If a different output is desired then the top resistor, R2, and/or the bottom resistor, R6, can be changed to provide a different output voltage. Refer to the LTC3290 data sheet and demo board schematic for more information on how to set the output voltage for the LTC3290. 

The VIN tracking circuit also has three selectable outputs, VIN2 + 5V, VIN2 + 10V, and VIN2 + 15V. If a different output voltage is desired, then R9 and/or R13 can be changed to set a different output. Refer to the LTC3290 data sheet for more information on how to set the output voltage in VIN tracking mode.

The LTC3290 can use two separate supplies or a single supply connected to both inputs for either circuit. This can be useful to boost or track a battery voltage with a regulated output.

The LTC3290 data sheet gives a complete description of the device, operation and application information. The data sheet must be read in conjunction with this demo manual.

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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