LT1073 - Micropower DC-DC Converter Adjustable and Fixed 5V, 12V
- No Design Required
- Operates at Supply Voltages From 1.0V to 30V
- Consumes Only 95µA Supply Current
- Works in Step-Up or Step-Down Mode
- Only Three External Off-the-Shelf Components Required
- Low-Battery Detector Comparator On-Chip
- User-Adjustable Current Limit
- Internal 1A Power Switch
- Fixed or Adjustable Output Voltage Versions
- Space-Saving 8-Pin MiniDIP or SO8 Package
DescriptionThe LT1073 is a versatile micropower DC/DC converter. The device requires only three external components to deliver a fixed output of 5V or 12V. The very low minimum supply voltage of 1V allows the use of the LT1073 in applications where the primary power source is a single cell. An on-chip auxiliary gain block can function as a low-battery detector or linear post-regulator.
Average current drain of the LT1073-5 used as shown in the Typical Application circuit below is just 135µA unloaded, making it ideal for applications where long battery life is important. The circuit shown can deliver 5V at 40mA from an input as low as 1.25V and 5V at 10mA from a 1V input.
The device can easily be configured as a step-up or step-down converter, although for most step-down applications or input sources greater than 3V, the LT1173 is recommended. Switch current limiting is user-adjustable by adding a single external resistor. Unique reverse-battery protection circuitry limits reverse current to safe, nondestructive levels at reverse supply voltages up to 1.6V.
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 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
|Buy Now • Request Samples|
Demo BoardsLinear 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
- Single-Cell to 5V Converters
- Battery Backup Supplies
- Laptop and Palmtop Computers
- Cellular Telephones
- Portable Instruments
- 4mA-20mA Loop Powered Instruments
- Hand-Held Inventory Computers
- Battery-Powered Alpha, Beta and Gamma Particle Detectors
People Who Viewed This Product Also Viewed
- LT3080 - Adjustable 1.1A Single Resistor Low Dropout Regulator
- LT1302 - Micropower High Output Current Step-Up Adjustable and Fixed 5V DC/DC Converters
- LTC3108 - Ultralow Voltage Step-Up Converter and Power Manager
- LTC3105 - 400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up
- LT3652 - Power Tracking 2A Battery Charger for Solar Power
- LT1028 - Ultra Low Noise Precision High Speed Op Amps
- LT5400 - Quad Matched Resistor Network
- LT4320/LT4320-1 - Ideal Diode Bridge Controller
- LT1083 - 7.5A, 5A, 3A Low Dropout Positive Adjustable Regulators
- LT3083 - Adjustable 3A Single Resistor Low Dropout Regulator
Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.