# LT1461 - Micropower Precision Low Dropout Series Voltage Reference Family

#### Features

**Trimmed to High Accuracy: 0.04% Max****Low Drift: 3ppm/°C Max****Low Supply Current: 50μA Max**- High Output Current: 50mA Min
- Low Dropout Voltage: 300mV Max
- Excellent Thermal Regulation
- Power Shutdown
- Thermal Limiting
- All Parts Guaranteed Functional from –40°C to 125°C
- Voltage Options: 2.5V, 3V, 3.3V, 4.096V and 5V

AEC-Q100 data available for specific packages

#### Typical Application

#### Description

The LT®1461 is a family of low dropout micropower bandgap references that combine very high accuracy and low drift with low supply current and high output drive. These series references use advanced curvature compensation techniques to obtain low temperature coefficient and trimmed precision thin-film resistors to achieve high output accuracy. The LT1461 family draws only 35μA of supply current, making them ideal for low power and portable applications, however their high 50mA output drive makes them suitable for higher power requirements, such as precision regulators.

In low power applications, a dropout voltage of less than 300mV ensures maximum battery life while maintaining full reference performance. Line regulation is nearly immeasurable, while the exceedingly good load and thermal regulation will not add significantly to system error budgets. The shutdown feature can be used to switch full load currents and can be used for system power down. Thermal shutdown protects the part from overload conditions. The LT1461 is available in 2.5V, 3V, 3.3V 4.096V and 5V options.

#### 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 |
---|---|---|---|---|---|

LT1461ACS8-2.5#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461ACS8-2.5#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461ACS8-3.3#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461ACS8-3.3#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461ACS8-3#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461ACS8-3#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461ACS8-4#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461ACS8-4#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461ACS8-5#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461ACS8-5#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461AIS8-2.5#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461AIS8-2.5#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461AIS8-3.3#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461AIS8-3.3#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461AIS8-3#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461AIS8-3#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461AIS8-4#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461AIS8-4#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461AIS8-5#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461AIS8-5#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461BCS8-2.5#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461BCS8-2.5#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461BCS8-3.3#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461BCS8-3.3#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461BCS8-3#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461BCS8-3#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461BCS8-4#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461BCS8-4#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461BCS8-5#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461BCS8-5#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461BIS8-2.5#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461BIS8-2.5#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461BIS8-3.3#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461BIS8-3.3#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461BIS8-3#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461BIS8-3#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461BIS8-4#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461BIS8-4#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461BIS8-5#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461BIS8-5#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461CCS8-2.5#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461CCS8-2.5#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461CCS8-3.3#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461CCS8-3.3#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461CCS8-3#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461CCS8-3#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461CCS8-4#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461CCS8-4#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461CCS8-5#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461CCS8-5#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1461CIS8-2.5#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461CIS8-2.5#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461CIS8-3.3#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461CIS8-3.3#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461CIS8-3#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461CIS8-3#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461CIS8-4#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461CIS8-4#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461CIS8-5#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461CIS8-5#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1461DHS8-2.5#PBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |

LT1461DHS8-2.5#TRPBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |

LT1461DHS8-3.3#PBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |

LT1461DHS8-3.3#TRPBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |

LT1461DHS8-3#PBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |

LT1461DHS8-3#TRPBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |

LT1461DHS8-4#PBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |

LT1461DHS8-4#TRPBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |

LT1461DHS8-5#PBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |

LT1461DHS8-5#TRPBF | SO-8 | S8 | H | 05-08-1610 (S8) | 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

^{*}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.Click here to view our complete list of demo boards

#### Designed for Automotive and Transportation Applications

AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

^{*}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.

#### Applications

- A/D and D/A Converters
- Precision Regulators
- Handheld Instruments
- Power Supplies

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#### Design Tools

### LTspice

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

**Models for the following parts are available in LTspice:**

LT1461-2.5

LT1461-3

LT1461-3.3

LT1461-4.096

LT1461-5

#### Technical Support

- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.