Features and Benefits
- Wide Input Voltage Range: 1.4V to 40V
- 1 Resistor Sets Output Voltage: 0.4V to 32V
- Output Current: 2.1A
- ±2% Tolerance Over Line, Load and Temperature
- Output Current Monitor: IMON = IOUT/1000
- Temperature Monitor with Programmable Thermal Limit
- Programmable Cable Drop Compensation
- Parallel Multiple Devices for Higher Current
- Dropout Voltage: 330mV
- 1 Capacitor Soft-Starts Output and Decreases Noise
- Low Output Noise: 40μVRMS (10Hz to 100kHz)
- Precision, Programmable External Current Limit
- Power Good Flag with Programmable Threshold
- Ceramic Output Capacitors: 10μF Minimum
- Quiescent Current in Shutdown: <1μA
- Reverse-Battery, -Current and -Output Protection
- Available in 5mm × 4mm 16-Lead DFN, 16-Lead TSSOP, 7-Lead DD-Pak and 7-Lead TO-220.
LT3086-EP Supports defense and aerospace applications (AQEC standard)
The LT3086 is a multi-feature, low dropout, low noise 2.1A linear regulator that operates over a 1.4V to 40V input supply range. Dropout voltage at 2.1A is typically 330mV. One resistor sets output voltage from 0.4V to 32V. Output voltage tolerance is guaranteed to ±2% over line, load and temperature. The LT3086 is stable with ceramic output capacitors, requiring a minimum of 10μF.
The LT3086’s programmable cable drop compensation cancels output voltage errors caused by resistive connections to the load. A master/slave configuration allows paralleling of multiple devices for higher load current and heat spreading without external ballast resistor requirements.
Output current and temperature monitoring along with a power good flag provide system diagnostic and debug capability. Internal fault circuitry includes thermal shutdown and current limit with foldback. Thermal limit and current limit are also externally programmable.
Packages include the thermally enhanced 16-lead (5mm × 4mm) DFN, 16-lead TSSOP, 7-lead DD-Pak and 7-lead TO-220.
- Programmable Linear Regulator
- Post Regulator for Switching Supplies
- USB Power Supplies
- High Reliability Power Supplies
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Demonstration circuit 1729A is a 2.1A low dropout adjustable linear regulator featuring the LT3086. The device is designed with multiple features and operates over a wide 1.4V to 40V input supply range. The LT3086 requires only one resistor to set the output voltage from 0.4V to 32V and it is stable with ceramic output capacitors requiring a minimum of 10μF.
Documentation & Resources
R531 Reliability Data3/26/2018
DC1729A - Demo Manual1/11/2014
Shutdown with the LT3080x Current Source Reference Linear Regulators1/21/2016
New Linear Regulators Solve Old Problems8/14/2013 LT Journal
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.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.