LT3061 Series - 45V Vin, Micropower, Low Noise, 100mA LDO with Active Output Discharge
Features
- 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
Description
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.
Packaging
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 Drawing |
RoHS |
|---|---|---|---|---|---|
| LT3061EDCB-3.3#PBF | 2x3 DFN-8 | DCB | E | 05-08-1718 | Yes |
| LT3061EDCB-3.3#TRMPBF | 2x3 DFN-8 | DCB | E | 05-08-1718 | Yes |
| LT3061EDCB-3.3#TRPBF | 2x3 DFN-8 | DCB | E | 05-08-1718 | Yes |
| LT3061EDCB-5#PBF | 2x3 DFN-8 | DCB | E | 05-08-1718 | Yes |
| LT3061EDCB-5#TRMPBF | 2x3 DFN-8 | DCB | E | 05-08-1718 | Yes |
| LT3061EDCB-5#TRPBF | 2x3 DFN-8 | DCB | E | 05-08-1718 | Yes |
| 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-3.3#PBF | MS-8E | MS8E | E | 05-08-1662 | Yes |
| LT3061EMS8E-3.3#TRPBF | MS-8E | MS8E | E | 05-08-1662 | Yes |
| LT3061EMS8E-5#PBF | MS-8E | MS8E | E | 05-08-1662 | Yes |
| LT3061EMS8E-5#TRPBF | MS-8E | MS8E | E | 05-08-1662 | 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-3.3#PBF | 2x3 DFN-8 | DCB | I | 05-08-1718 | Yes |
| LT3061IDCB-3.3#TRMPBF | 2x3 DFN-8 | DCB | I | 05-08-1718 | Yes |
| LT3061IDCB-3.3#TRPBF | 2x3 DFN-8 | DCB | I | 05-08-1718 | Yes |
| LT3061IDCB-5#PBF | 2x3 DFN-8 | DCB | I | 05-08-1718 | Yes |
| LT3061IDCB-5#TRMPBF | 2x3 DFN-8 | DCB | I | 05-08-1718 | Yes |
| LT3061IDCB-5#TRPBF | 2x3 DFN-8 | DCB | I | 05-08-1718 | 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-3.3#PBF | MS-8E | MS8E | I | 05-08-1662 | Yes |
| LT3061IMS8E-3.3#TRPBF | MS-8E | MS8E | I | 05-08-1662 | Yes |
| LT3061IMS8E-5#PBF | MS-8E | MS8E | I | 05-08-1662 | Yes |
| LT3061IMS8E-5#TRPBF | MS-8E | MS8E | I | 05-08-1662 | 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 |
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
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 | $100.00 | |
| Buy Now | |||
Applications
- Battery Powered Systems
- Automotive Power Supplies
- Industrial Power Supplies
- Avionic Power Supplies
- Portable Instruments
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