LT3086 - 40V, 2.1A Low Dropout Adjustable Linear Regulator with Monitoring and Cable Drop Compensation

Features

  • 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.

Typical Application

LT3086 Typical Application
LT3086 Typical Application

Description

The LT®3086 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.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

DFN-16, TSSOP-16, DDPAK, TO-220

LT3086 Package Drawing
LT3086 Package Drawing
LT3086 Package Drawing
LT3086 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT3086EDHD#PBF DFN 16 E $4.29 $3.00 View
LT3086EDHD#TRPBF DFN 16 E $3.06 View
LT3086EFE#PBF TSSOP 16 E $4.43 $3.10 View
LT3086EFE#TRPBF TSSOP 16 E $3.16 View
LT3086ER#PBF DD PAK 7 E $4.57 $3.20 View
LT3086ER#TRPBF DD PAK 7 E $3.26 View
LT3086ET7#PBF TO-220 7 E $4.57 $3.20 View
LT3086IDHD#PBF DFN 16 I $4.71 $3.30 View
LT3086IDHD#TRPBF DFN 16 I $3.36 View
LT3086IFE#PBF TSSOP 16 I $4.79 $3.35 View
LT3086IFE#TRPBF TSSOP 16 I $3.41 View
LT3086IR#PBF DD PAK 7 I $4.86 $3.40 View
LT3086IR#TRPBF DD PAK 7 I $3.46 View
LT3086IT7#PBF TO-220 7 I $4.86 $3.40 View
LT3086MPFE#PBF TSSOP 16 MP $5.71 $4.00 View
LT3086MPFE#TRPBF TSSOP 16 MP $4.06 View
LT3086MPR#PBF DD PAK 7 MP $5.93 $4.15 View
LT3086MPR#TRPBF DD PAK 7 MP $4.21 View
LT3086MPT7#PBF TO-220 7 MP $5.93 $4.15 View
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* 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.

Part Number Description Price Documentation
DC1729A LT3086 Demo Board | Low Dropout Linear Regulator, Monitoring & Cable Drop Compensation, 1.55V ≤ VIN ≤ 40V, Vout = 1.0V/1.2V/1.5V/3.3V/5V/12V @ 2.1A $175.00
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Applications

  • Programmable Linear Regulator
  • Post Regulator for Switching Supplies
  • USB Power Supplies
  • High Reliability Power Supplies

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Design Tools

LTspiceIV

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LT3086

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