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Solutions Bulletins & BrochuresPower Management Solutions for NXP Processors
Features and Benefits
- Input Voltage Range: 1.8V to 45V
- Output Current: 500mA
- Dropout Voltage: 300mV
- Programmable Precision Current Limit: ±10%
- Power Good Flag
- Low Noise: 25μVRMS (10Hz to 100kHz)
- Adjustable Output (VREF = VOUT(MIN) = 600mV)
- Output Tolerance: ±2% Over Line, Load and Temperature
- Stable with Low ESR, Ceramic Output Capacitors (3.3μF Minimum)
- Single Capacitor Soft-Starts Reference and Lowers Output Noise
- Current Limit Foldback Protection
- Shutdown Current: <1μA
- Reverse Battery and Thermal Limit Protection
- 10-Lead 3mm × 3mm DFN and 12-lead MSOP Packages
The LT3065 Series are micropower, low noise, low dropout voltage (LDO) linear regulators that operate over a 1.8V to 45V input voltage range. The devices supply 500mA of output current with a typical dropout voltage of 300mV. A single external capacitor provides programmable low noise reference performance and output soft-start functionality.
A single external resistor programs the LT3065’s current limit, accurate to ±10% over a wide input voltage and temperature range. A PWRGD flag indicates output regulation.
The LT3065 optimizes stability and transient response with low ESR ceramic capacitors, requiring a minimum of 3.3μF. Internal protection circuitry includes current limiting with foldback, thermal limiting, reverse battery protection, reverse current protection and reverse output protection.
The LT3065 is available in fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V, and as an adjustable device with an output voltage range from 0.6V to 40V. The LT3065 is available in the thermally-enhanced 10-lead 3mm × 3mm DFN and 12-lead MSOP packages.
- Battery-Powered Systems
- Automotive Power Supplies
- Industrial Power Supplies
- Avionic Power Supplies
- Portable Instruments
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Demonstration circuit 2072A is an adjustable 500mA linear regulator featuring the LT3065. The LT3065 is a micropower, low noise and low dropout voltage linear regulator. The device supplies 500mA of output current with a typical dropout voltage of 300mV. A 10nF bypass capacitor reduces output noise to 25μVRMS in a 10Hz to 100kHz bandwidth and soft-starts the reference. The LT3065’s ±45V input voltage rating combined with its precision current limit make the IC an ideal choice for robust, high reliability applications.
Tools & Simulations
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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 Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.