Features and Benefits
- VIN Range: 0.9V to 10V
- Minimum Input Voltage: 0.9V
- Dropout Voltage: 150mV Typical
- Output Current: 100mA
- Adjustable Output (VREF = VOUT(MIN) = 200mV)
- Fixed Output Voltages: 1.2V, 1.5V, 1.8V
- Stable with Low ESR, Ceramic Output Capacitors (2.2µF Minimum)
- 0.2% Load Regulation from 1mA to 100mA
- Quiescent Current: 120µA (Typ)
- 3µA Typical Quiescent Current in Shutdown
- Current Limit Protection
- Reverse-Battery Protection
- No Reverse Current
- Thermal Limiting with Hysteresis
- 8-Lead DFN (3mm × 3mm) and MSOP Packages
The LT3020 is a very low dropout voltage (VLDO™) linear regulator that operates from input supplies down to 0.9V. This device supplies 100mA of output current with a typical dropout voltage of 150mV. The LT3020 is ideal for low input voltage to low output voltage applications, providing comparable electrical efficiency to that of a switching regulator.
The LT3020 regulator optimizes stability and transient response with low ESR, ceramic output capacitors as small as 2.2µF. Other LT3020 features include 0% typical line regulation and 0.2% typical load regulation. In shutdown, quiescent current drops to 3µA.
Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting with hysteresis, and reverse-current protection. The LT3020 is available as an adjustable output device with an output range down to the 200mV reference. Three fixed output voltages, 1.2V, 1.5V and 1.8V, are also available.
The LT3020 regulator is available in the low profile (0.75mm) 8-lead (3mm × 3mm) DFN package with exposed pad and the 8-lead MSOP package.
- Low Current Regulators
- Battery-Powered Systems
- Cellular Phones
- Wireless Modems
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 687 is a low input voltage and ultralow dropout voltage power supply using the LT3020 100mA linear regulator in the small 8-Pin 3x3 DFN package. The DC687 has an input voltage range from 1V to 10V, and a jumpers-selectable output voltage that can be set to 1.2V, 1.5V, 1.8V or a user-defined value between 0.2V and 10V minus the dropout voltage. With its low 0.2V reference, the LT3020 is capable of supplying power to very low voltage applications, such as (relatively) high current voltage references.
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.