LT3030
Info : RECOMMENDED FOR NEW DESIGNS
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LT3030

Dual 750mA/250mA Low Dropout, Low Noise, Micropower Linear Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 14
1ku List Price Starting From $3.92
Features
  • Output Current: 750mA/250mA
  • Low Dropout Voltage: 300mV
  • Low Noise: 20μVRMS (10Hz to 100kHz)
  • Low Quiescent Current: 120μA/75μA
  • Wide Input Voltage Range: 1.7V to 20V
  • Adjustable Output: 1.220V Reference Voltage
  • Shutdown Quiescent Current: <1μA
  • Stable with 10μF/3.3μF Minimum Output Capacitor
  • Stable with Ceramic, Tantalum or Aluminum Electrolytic Capacitors
  • Precision Threshold for Shutdown Logic or UVLO Function
  • PWRGD Flag for each Output
  • Reverse Battery and Reverse Output-to-Input Protection
  • Current Limit with Foldback and Thermal Shutdown
  • Thermally Enhanced 20-Lead TSSOP and 28-Lead (4mm × 5mm) QFN Packages
Additional Details
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The LT3030 is a dual, micropower, low noise, low dropout linear regulator. The device operates with either common or independent input supplies for each channel, over a 1.7V to 20V input voltage range. Output 1/Output 2 supply 750mA/250mA respectively with a typical dropout voltage of 300mV. With an external 10nF bypass capacitor, output noise is only 20μVRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 120μA/75μA quiescent current makes it an ideal choice. In shutdown, quiescent current drops to less than 1μA. Shutdown control is independent for each channel and its precision logic threshold allows for voltage lockout functionality. The LT3030 includes a PWRGD flag for each channel to indicate output regulation.

The LT3030 optimizes stability and transient response with low ESR ceramic output capacitors, requiring a minimum of only 10μF/3.3μF.

Internal circuitry provides reverse-battery protection, reverse-current protection, current limiting with foldback and thermal shutdown with hysteresis. The adjustable output voltage device has a 1.220V reference voltage. The LT3030 is offered in the thermally enhanced 20-lead TSSOP and 28-lead, low profile (4mm × 5mm × 0.75mm) QFN packages.

Applications

  • General Purpose Linear Regulator
  • Battery-Powered Systems
  • Microprocessor Core/Logic Supplies
  • Post Regulator for Switching Supplies
  • Tracking/Sequencing Power Supplies
Part Models 14
1ku List Price Starting From $3.92

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Documentation

Documentation

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Product Lifecycle

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Apr 6, 2022

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Feb 20, 2022

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Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

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Apr 6, 2022

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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT3030EFE#PBF

PRODUCTION

LT3030EFE#TRPBF

PRODUCTION

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Feb 20, 2022

- 21_0269

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Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LT3030EUFD#PBF

PRODUCTION

LT3030EUFD#TRPBF

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LT3030HUFD#PBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC1855A

LT3030 Demo Board | Dual, Low Noise, Micropower Linear Regulator 2.2V ≤ VIN ≤ 20V, VOUT1/VOUT2 = 1.5V/1.8V/2.5V/3.3V/5V @ 750mA/250mA

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DC1855A

LT3030 Demo Board | Dual, Low Noise, Micropower Linear Regulator 2.2V ≤ VIN ≤ 20V, VOUT1/VOUT2 = 1.5V/1.8V/2.5V/3.3V/5V @ 750mA/250mA

LT3030 Demo Board | Dual, Low Noise, Micropower Linear Regulator 2.2V ≤ VIN ≤ 20V, VOUT1/VOUT2 = 1.5V/1.8V/2.5V/3.3V/5V @ 750mA/250mA

Product Detail

Demonstration circuit 1855A is a dual, micropower, low noise and low dropout voltage linear regulator featuring the LT3030. The input voltages are independent for each channel of DC1855A and can range from 2.2V to 20V. Each channel has a jumper that sets the output voltage to either 1.5V, 1.8V, 2.5V, 3.3V, 5V or a voltage that is user-programmed by the installation of a resistor. For channel 1 and channel 2, the maximum output currents are 750mA and 250mA and the ceramic output capacitors are 22μF and 10μF respectively. The internal reference of each channel is bypassed with a 10nF capacitor for reduced output noise. Each channel has a jumper for shutdown and a terminal for PWRGD that is pulled up to the input supply. A resistor divider can be easily added that allows precise lockout at low input voltages.



Tools & Simulations

Tools & Simulations 1

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.

Reference Designs

Reference Designs 1

MAX 10 NEEK Dev Kit

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Circuits from the lab

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Features and Benefits

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