LT3095 - Dual-Channel Low Noise Bias Generators


  • Generates Two Independent Low Noise Bias Supplies
  • Boost Regulator:
    • Wide Input Voltage Range: 3V to 20V
    • Adjustable Switching Frequency: 450kHz to 2MHz
    • Synchronizable to External Clock
    • 950mA Power Switches
    • Integrated Schottky Diodes
    • Internal Frequency Compensation
  • Linear Regulator:
    • Wide Output Voltage Range: 1V to 20V
    • SET Pin Reference Current: 50μA
    • Low Noise: 4μVRMS (10Hz to 100kHz)
    • High Frequency PSRR: 72dB at 1MHz
  • Independent Precision-Threshold Enable Pins
  • Symmetric Pinout Simplifies PCB Layout
  • Thermally Enhanced 3mm × 5mm 24-Lead QFN Package

Typical Application

LT3095 Typical Application
LT3095 Typical Application


The LT®3095 generates two low-noise bias supplies from a common input voltage ranging from 3V to 20V. Each channel includes a fixed frequency, peak current-mode step-up switching regulator and a low-noise, singleresistor- programmable 50mA linear regulator. The linear regulator’s high power supply ripple rejection (PSRR) combined with its low-noise performance results in less than 100μVP-P output ripple and noise.

Each boost regulator adjusts its output voltage to 2V above the corresponding linear regulator’s output voltage, optimizing power dissipation, PSRR and transient response. This tracking scheme, along with internal boost regulator frequency compensation and integrated Schottky diodes, minimizes external component count and simplifies system design. Each linear regulator includes internal current limit and thermal limit protection circuitry.

The LT3095 switching frequency is externally programmable with a single resistor from 450kHz to 2MHz. A SYNC pin allows synchronization to an external clock. The LT3095 is available in a thermally enhanced, low profile (0.75mm) 24-lead 3mm × 5mm QFN package.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LT3095EUDD#PBF 3x5 QFN-24 UDD E 05-08-1833 Yes
LT3095EUDD#TRPBF 3x5 QFN-24 UDD E 05-08-1833 Yes
LT3095IUDD#PBF 3x5 QFN-24 UDD I 05-08-1833 Yes
LT3095IUDD#TRPBF 3x5 QFN-24 UDD I 05-08-1833 Yes
LT3095MPUDD#PBF 3x5 QFN-24 UDD MP 05-08-1833 Yes
LT3095MPUDD#TRPBF 3x5 QFN-24 UDD MP 05-08-1833 Yes

LT3095 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LT3095EUDD#PBF 3x5 QFN-24 E $4.22 $2.95 Yes
LT3095EUDD#TRPBF 3x5 QFN-24 E $3.01 Yes
LT3095IUDD#PBF 3x5 QFN-24 I $4.57 $3.20 Yes
LT3095IUDD#TRPBF 3x5 QFN-24 I $3.26 Yes
LT3095MPUDD#PBF 3x5 QFN-24 MP $11.36 $7.95 Yes
LT3095MPUDD#TRPBF 3x5 QFN-24 MP $8.01 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2270A LT3095 Demo Board | Dual Boost Plus Post-Regulator LDO Bias Generator, 3V ≤ VIN ≤ 20V, Vout1 = 5V @ 50mA, Vout2 = 15V @ 50mA Contact Factory
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Click here to view our complete list of demo boards


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Design Tools


LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

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