LT3066

RECOMMENDED FOR NEW DESIGNS

45V VIN, 500mA Low Noise, Linear Regulator with Programmable Current Limit and Active Output Discharge

Data Sheet (Rev. B) Product Selection Table
Part Models
24
1ku List Price
Starting From $2.43
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Part Details

  • Input Voltage Range: 1.8V to 45V
  • Output Current: 500mA
  • Active Output Discharge
  • Dropout Voltage: 300mV
  • Programmable Precision Current Limit: ±10%
  • Power Good Flag
  • Input Filtering for High PSRR
  • 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: <3μA
  • Reverse Battery and Thermal Limit Protection
  • 12-Lead 4mm × 3mm DFN and 12-lead MSOP Packages
LT3066
45V VIN, 500mA Low Noise, Linear Regulator with Programmable Current Limit and Active Output Discharge
3.3V Supply with 497mA Precision Current Limit Output Discharge vs VOUT CREF/BYP = 1nF Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT3066
LTspice

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.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC2437A

LT3066 Demo Board | Low Noise Linear Regulator, Active Output Discharge, 1.8V ≤ VIN ≤ 45V, VOUT = 1.2/1.5/1.8/2.0/2.5/3.3/5V @ 500mA

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Product Details

Demonstration circuit 2437A is an adjustable 500mA linear regulator featuring the LT3066. The LT3066 is a micropower, low noise and low dropout voltage linear regulator that operates over a 1.8V to 45V input voltage range. The device supplies 500mA of output current with a typical dropout voltage of 300mV. Jumper-selectable output voltages include 1.2V, 1.5V, 1.8V, 2.0V, 2.5V, 3.3V and 5V. A 10nF bypass capacitor reduces output noise to 25μVRMS across a 10Hz to 100kHz bandwidth and soft-starts the reference. The LT3066’s ±45V input voltage rating combined with its precision current limit make the IC an ideal choice for robust, high reliability applications. LT3066 features an NMOS pull-down that discharges the output if SHDN or IN is driven low.
DC2437A
LT3066 Demo Board | Low Noise Linear Regulator, Active Output Discharge, 1.8V ≤ VIN ≤ 45V, VOUT = 1.2/1.5/1.8/2.0/2.5/3.3/5V @ 500mA
DC2437A Demo Board DC2437A Demo Board DC2437A Demo Board DC2437A Demo Board DC2437A - Schematic

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