LT3024 - Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulator

Features

  • Low Noise: 20µVRMS (10Hz to 100kHz)
  • Low Quiescent Current: 30µA/Output
  • Wide Input Voltage Range: 1.8V to 20V
  • Output Current: 100mA/500mA
  • Very Low Shutdown Current: <0.1µA
  • Low Dropout Voltage: 300mV at 100mA/500mA
  • Adjustable Outputs from 1.22V to 20V
  • Stable with 1µF/3.3µF Output Capacitor
  • Stable with Aluminum, Tantalum or Ceramic Capacitors
  • Reverse-Battery Protected
  • No Reverse Current
  • No Protection Diodes Needed
  • Overcurrent and Overtemperature Protected
  • Thermally Enhanced 16-Lead TSSOP and 12-Lead (4mm x 3mm) DFN Packages
Designed for Automotive and Transportation Applications
AEC-Q100 generic family data available for specific packages


Typical Application

LT3024 Typical Application
LT3024 Typical Application

Description

The LT3024 is a dual, micropower, low noise, low dropout regulator. With an external 0.01µF bypass capacitor, output noise drops to 20µVRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 30µA quiescent current per output makes it an ideal choice. In shutdown, quiescent current drops to less than 0.1µA. Shutdown control is independent for each output, allowing for flexibility in power management. The device is capable of operating over an input voltage range of 1.8V to 20V. The device can supply 100mA of output current from Output 2 with a dropout voltage of 300mV. Output 1 can supply 500mA of output current with a dropout voltage of 300mV. Quiescent current is well controlled in dropout.

The LT3024 regulator is stable with output capacitors as low as 1µF for the 100mA output and 3.3µF for the 500mA output. Small ceramic capacitors can be used without the series resistance required by other regulators.

Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting and reverse current protection. The device is available as an adjustable device with a 1.22V reference voltage. The LT3024 regulator is available in the thermally enhanced 16-lead TSSOP and 12-lead, low profile (4mm x 3mm x 0.75mm) DFN packages.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
Drawing
RoHS
LT3024EDE#PBF 4x3 DFN-12 DE/UE E 05-08-1695 Yes
LT3024EDE#TRPBF 4x3 DFN-12 DE/UE E 05-08-1695 Yes
LT3024EFE#PBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT3024EFE#TRPBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT3024IDE#PBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT3024IDE#TRPBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT3024IFE#PBF TSSOP-16 FE I 05-08-1663 (BB) Yes
LT3024IFE#TRPBF TSSOP-16 FE I 05-08-1663 (BB) Yes


LT3024 Package Drawing
LT3024 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3024EDE#PBF 4x3 DFN-12 E $3.50 $2.45 Yes
LT3024EDE#TRPBF 4x3 DFN-12 E $2.55 Yes
LT3024EFE#PBF TSSOP-16 E $3.50 $2.45 Yes
LT3024EFE#TRPBF TSSOP-16 E $2.55 Yes
LT3024IDE#PBF 4x3 DFN-12 I $3.86 $2.70 Yes
LT3024IDE#TRPBF 4x3 DFN-12 I $2.76 Yes
LT3024IFE#PBF TSSOP-16 I $3.86 $2.70 Yes
LT3024IFE#TRPBF TSSOP-16 I $2.76 Yes
Buy NowRequest Samples
* 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
DC717A LT3024EDE Demo Board | Dual, Micropower Low Noise LDO Linear Regulator, 2.3V ≤ VIN ≤ 20V, Vout1 = 2.5V/3.3V/5V/Adj @ 500mA, Vout2 = 2.5V/3.3V/5V/Adj @ 100mA $75.00
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Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

Please contact your local sales representative for more information regarding reliability reports and AEC-Q100 data or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3024IFE#PBF TSSOP-16 I $3.86 $2.70 Yes
LT3024IFE#TRPBF TSSOP-16 I $2.76 Yes
Buy NowRequest Samples
* 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.

Applications

  • Cellular Phones
  • Pagers
  • Battery-Powered Systems
  • Frequency Synthesizers
  • Wireless Modems

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
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To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice:
LT3024

Technical Support