LT3061 Series - 45V Vin, Micropower, Low Noise, 100mA LDO with Active Output Discharge


  • Input Voltage Range: 1.6V to 45V
  • Output Current: 100mA
  • Output Discharge
  • Quiescent Current: 45μA
  • Dropout Voltage: 250mV
  • Low Noise: 30μVRMS (10Hz to 100kHz)
  • Adjustable Output (VREF = 600mV)
  • Fixed Output Voltages: 3.3V, 5V
  • Output Tolerance: ±2% Over Load, Line, and Temperature
  • Single Capacitor Soft-Starts Reference and Lowers Output Noise
  • Shutdown Current: < 3μA
  • Reverse Battery Protection
  • Current Limit Foldback and Thermal Limit Protection
  • 8-Lead 2mm × 3mm DFN and MSOP Packages

Typical Application

LT3061 Typical Application
LT3061 Typical Application


The LT3061 is a micropower, low dropout (LDO) linear regulator that operates over a 1.6V to 45V supply range and is available in a series of fixed output and adjustable versions. The device supplies 100mA of output current with a typical dropout voltage of 250mV. A single external capacitor provides programmable low noise reference performance and output soft-start functionality. The LT3061’s quiescent current is merely 45μA and provides fast transient response with a minimum 3.3μF output capacitor. In shutdown, quiescent current is less than 3μA and the reference soft start capacitor is reset.

The LT3061 features an NMOS pull-down that discharges the output when SHDN or IN is driven low.

Internal protection circuitry includes reverse-battery protection, reverse-current protection, current limit with foldback and thermal shutdown.

The LT3061 is available in fixed output voltages of 3.3V and 5V, and as an adjustable device with an output voltage range from the 600mV reference up to 19V. The LT3061 is offered in the thermally enhanced 8-lead 2mm × 3mm DFN and MSOP packages.


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

Part Number Package Code Temp Package
LT3061EDCB#PBF 2x3 DFN-8 DCB E 05-08-1718 Yes
LT3061EDCB#TRMPBF 2x3 DFN-8 DCB E 05-08-1718 Yes
LT3061EDCB#TRPBF 2x3 DFN-8 DCB E 05-08-1718 Yes
LT3061EMS8E#PBF MS-8 MS8 E 05-08-1660 Yes
LT3061EMS8E#TRPBF MS-8 MS8 E 05-08-1660 Yes
LT3061HDCB#PBF 2x3 DFN-8 DCB H 05-08-1718 Yes
LT3061HDCB#TRMPBF 2x3 DFN-8 DCB H 05-08-1718 Yes
LT3061HDCB#TRPBF 2x3 DFN-8 DCB H 05-08-1718 Yes
LT3061HMS8E#PBF MS-8 MS8 H 05-08-1660 Yes
LT3061HMS8E#TRPBF MS-8 MS8 H 05-08-1660 Yes
LT3061IDCB#PBF 2x3 DFN-8 DCB I 05-08-1718 Yes
LT3061IDCB#TRMPBF 2x3 DFN-8 DCB I 05-08-1718 Yes
LT3061IDCB#TRPBF 2x3 DFN-8 DCB I 05-08-1718 Yes
LT3061IMS8E#PBF MS-8 MS8 I 05-08-1660 Yes
LT3061IMS8E#TRPBF MS-8 MS8 I 05-08-1660 Yes
LT3061MPDCB#PBF 2x3 DFN-8 DCB MP 05-08-1718 Yes
LT3061MPDCB#TR 2x3 DFN-8 DCB MP 05-08-1718 No
LT3061MPDCB#TRMPBF 2x3 DFN-8 DCB MP 05-08-1718 Yes
LT3061MPDCB#TRPBF 2x3 DFN-8 DCB MP 05-08-1718 Yes
LT3061MPMS8E#PBF MS-8 MS8 MP 05-08-1660 Yes
LT3061MPMS8E#TRPBF MS-8 MS8 MP 05-08-1660 Yes

LT3061 Package Drawing
LT3061 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
LT3061EDCB#PBF 2x3 DFN-8 E $2.22 Yes
LT3061EDCB#TRMPBF 2x3 DFN-8 E $2.22 $1.60 Yes
LT3061EDCB#TRPBF 2x3 DFN-8 E $2.22 $1.55 Yes
LT3061EMS8E#PBF MS-8 E $2.22 $1.55 Yes
LT3061EMS8E#TRPBF MS-8 E $1.61 Yes
LT3061HDCB#PBF 2x3 DFN-8 H $2.93 Yes
LT3061HDCB#TRMPBF 2x3 DFN-8 H $2.93 $2.10 Yes
LT3061HDCB#TRPBF 2x3 DFN-8 H $2.93 $2.05 Yes
LT3061HMS8E#PBF MS-8 H $2.93 $2.05 Yes
LT3061HMS8E#TRPBF MS-8 H $2.11 Yes
LT3061IDCB#PBF 2x3 DFN-8 I $2.43 Yes
LT3061IDCB#TRMPBF 2x3 DFN-8 I $2.43 $1.75 Yes
LT3061IDCB#TRPBF 2x3 DFN-8 I $2.43 $1.70 Yes
LT3061IMS8E#PBF MS-8 I $2.43 $1.70 Yes
LT3061IMS8E#TRPBF MS-8 I $1.76 Yes
LT3061MPDCB#PBF 2x3 DFN-8 MP $4.43 Yes
LT3061MPDCB#TR 2x3 DFN-8 MP $4.43 $3.10 No
LT3061MPDCB#TRMPBF 2x3 DFN-8 MP $4.43 $3.15 Yes
LT3061MPDCB#TRPBF 2x3 DFN-8 MP $4.43 $3.10 Yes
LT3061MPMS8E#PBF MS-8 MP $4.43 $3.10 Yes
LT3061MPMS8E#TRPBF MS-8 MP $3.16 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
DC2177A-A LT3061 Demo Board | Micropower, Low Noise LDO with Output Discharge, 2.1V ≤ VIN ≤ 45V, Vout = 1.2V to 5V @ 100mA Contact Factory
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