LT1763 - 500mA, Low Noise, LDO Micropower Regulators

Features

  • Low Noise: 20μVRMS (10Hz to 100kHz)
  • Output Current: 500mA
  • Low Quiescent Current: 30μA
  • Wide Input Voltage Range: 1.8V to 20V
  • Low Dropout Voltage: 300mV
  • Very Low Shutdown Current: < 1μA
  • No Protection Diodes Needed
  • Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V
  • Adjustable Output from 1.22V to 20V
  • Stable with 3.3μF Output Capacitor
  • Stable with Aluminum, Tantalum or Ceramic Capacitors
  • Reverse Battery Protection
  • No Reverse Current
  • Overcurrent and Overtemperature Protected
  • 8-Lead SO and 12-Lead (4mm × 3mm) DFN Packages
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages


Typical Application

LT1763 Typical Application
LT1763 Typical Application

Description

The LT®1763 series are micropower, low noise, low dropout regulators. The devices are capable of supplying 500mA of output current with a dropout voltage of 300mV. Designed for use in battery-powered systems, the low 30μA quiescent current makes them an ideal choice. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators.

A key feature of the LT1763 regulators is low output noise. With the addition of an external 0.01μF bypass capacitor, output noise drops to 20μVRMS over a 10Hz to 100kHz bandwidth. The LT1763 regulators are stable with output capacitors as low as 3.3μF. 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 parts come in fixed output voltages of 1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1763 regulators are available in 8-lead SO and 12-lead, low profile (4mm × 3mm × 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
LT1763CDE-1.5#PBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-1.5#TRPBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-1.8#PBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-1.8#TRPBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-2.5#PBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-2.5#TRPBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-3.3#PBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-3.3#TRPBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-3#PBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-3#TRPBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-5#PBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE-5#TRPBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE#PBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CDE#TRPBF 4x3 DFN-12 DE/UE C 05-08-1695 Yes
LT1763CS8-1.5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-1.5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-1.8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-1.8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-2.5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-2.5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-3.3#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-3.3#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-3#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-3#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8-5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1763IDE-1.5#PBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-1.5#TRPBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-1.8#PBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-1.8#TRPBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-2.5#PBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-2.5#TRPBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-3.3#PBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-3.3#TRPBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-3#PBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-3#TRPBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-5#PBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE-5#TRPBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE#PBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IDE#TRPBF 4x3 DFN-12 DE/UE I 05-08-1695 Yes
LT1763IS8-1.5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-1.5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-1.8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-1.8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-2.5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-2.5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-3.3#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-3.3#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-3#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-3#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8-5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1763MPDE 4x3 DFN-12 DE/UE MP 05-08-1695 No
LT1763MPDE-1.5 4x3 DFN-12 DE/UE MP 05-08-1695 No
LT1763MPDE-1.5#PBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-1.5#TRPBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-1.8#PBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-1.8#TRPBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-2.5#PBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-2.5#TRPBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-3.3 4x3 DFN-12 DE/UE MP 05-08-1695 No
LT1763MPDE-3.3#PBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-3.3#TR 4x3 DFN-12 DE/UE MP 05-08-1695 No
LT1763MPDE-3.3#TRPBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-3#PBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-3#TRPBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-5#PBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE-5#TRPBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE#PBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPDE#TR 4x3 DFN-12 DE/UE MP 05-08-1695 No
LT1763MPDE#TRPBF 4x3 DFN-12 DE/UE MP 05-08-1695 Yes
LT1763MPS8 SO-8 S8 MP 05-08-1610 (S8) No
LT1763MPS8-2.5#PBF SO-8 S8 MP 05-08-1610 (S8) Yes
LT1763MPS8-2.5#TRPBF SO-8 S8 MP 05-08-1610 (S8) Yes
LT1763MPS8-5#PBF SO-8 S8 MP 05-08-1610 (S8) Yes
LT1763MPS8-5#TRPBF SO-8 S8 MP 05-08-1610 (S8) Yes
LT1763MPS8#PBF SO-8 S8 MP 05-08-1610 (S8) Yes
LT1763MPS8#TR SO-8 S8 MP 05-08-1610 (S8) No
LT1763MPS8#TRPBF SO-8 S8 MP 05-08-1610 (S8) Yes


LT1763 Package Drawing
LT1763 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
LT1763CDE-1.5#PBF 4x3 DFN-12 C $2.79 $1.95 Yes
LT1763CDE-1.5#TRPBF 4x3 DFN-12 C $2.05 Yes
LT1763CDE-1.8#PBF 4x3 DFN-12 C $2.79 $1.95 Yes
LT1763CDE-1.8#TRPBF 4x3 DFN-12 C $2.05 Yes
LT1763CDE-2.5#PBF 4x3 DFN-12 C $2.79 $1.95 Yes
LT1763CDE-2.5#TRPBF 4x3 DFN-12 C $2.05 Yes
LT1763CDE-3.3#PBF 4x3 DFN-12 C $2.79 $1.95 Yes
LT1763CDE-3.3#TRPBF 4x3 DFN-12 C $2.05 Yes
LT1763CDE-3#PBF 4x3 DFN-12 C $2.79 $1.95 Yes
LT1763CDE-3#TRPBF 4x3 DFN-12 C $2.05 Yes
LT1763CDE-5#PBF 4x3 DFN-12 C $2.79 $1.95 Yes
LT1763CDE-5#TRPBF 4x3 DFN-12 C $2.05 Yes
LT1763CDE#PBF 4x3 DFN-12 C $2.79 $1.95 Yes
LT1763CDE#TRPBF 4x3 DFN-12 C $2.05 Yes
LT1763CS8-1.5#PBF SO-8 C $2.30 $1.95 Yes
LT1763CS8-1.5#TRPBF SO-8 C $2.01 Yes
LT1763CS8-1.8#PBF SO-8 C $2.30 $1.95 Yes
LT1763CS8-1.8#TRPBF SO-8 C $2.01 Yes
LT1763CS8-2.5#PBF SO-8 C $2.30 $1.95 Yes
LT1763CS8-2.5#TRPBF SO-8 C $2.01 Yes
LT1763CS8-3.3#PBF SO-8 C $2.30 $1.95 Yes
LT1763CS8-3.3#TRPBF SO-8 C $2.01 Yes
LT1763CS8-3#PBF SO-8 C $2.30 $1.95 Yes
LT1763CS8-3#TRPBF SO-8 C $2.01 Yes
LT1763CS8-5#PBF SO-8 C $2.30 $1.95 Yes
LT1763CS8-5#TRPBF SO-8 C $2.01 Yes
LT1763CS8#PBF SO-8 C $2.30 $1.95 Yes
LT1763CS8#TRPBF SO-8 C $2.01 Yes
LT1763IDE-1.5#PBF 4x3 DFN-12 I $3.07 $2.15 Yes
LT1763IDE-1.5#TRPBF 4x3 DFN-12 I $2.21 Yes
LT1763IDE-1.8#PBF 4x3 DFN-12 I $3.07 $2.15 Yes
LT1763IDE-1.8#TRPBF 4x3 DFN-12 I $2.21 Yes
LT1763IDE-2.5#PBF 4x3 DFN-12 I $3.07 $2.15 Yes
LT1763IDE-2.5#TRPBF 4x3 DFN-12 I $2.21 Yes
LT1763IDE-3.3#PBF 4x3 DFN-12 I $3.07 $2.15 Yes
LT1763IDE-3.3#TRPBF 4x3 DFN-12 I $2.21 Yes
LT1763IDE-3#PBF 4x3 DFN-12 I $3.07 $2.15 Yes
LT1763IDE-3#TRPBF 4x3 DFN-12 I $2.21 Yes
LT1763IDE-5#PBF 4x3 DFN-12 I $3.07 $2.15 Yes
LT1763IDE-5#TRPBF 4x3 DFN-12 I $2.21 Yes
LT1763IDE#PBF 4x3 DFN-12 I $3.07 $2.15 Yes
LT1763IDE#TRPBF 4x3 DFN-12 I $2.21 Yes
LT1763IS8-1.5#PBF SO-8 I $3.07 $2.15 Yes
LT1763IS8-1.5#TRPBF SO-8 I $2.21 Yes
LT1763IS8-1.8#PBF SO-8 I $3.07 $2.15 Yes
LT1763IS8-1.8#TRPBF SO-8 I $2.21 Yes
LT1763IS8-2.5#PBF SO-8 I $3.07 $2.15 Yes
LT1763IS8-2.5#TRPBF SO-8 I $2.21 Yes
LT1763IS8-3.3#PBF SO-8 I $3.07 $2.15 Yes
LT1763IS8-3.3#TRPBF SO-8 I $2.21 Yes
LT1763IS8-3#PBF SO-8 I $3.07 $2.15 Yes
LT1763IS8-3#TRPBF SO-8 I $2.21 Yes
LT1763IS8-5#PBF SO-8 I $3.07 $2.15 Yes
LT1763IS8-5#TRPBF SO-8 I $2.21 Yes
LT1763IS8#PBF SO-8 I $3.07 $2.15 Yes
LT1763IS8#TRPBF SO-8 I $2.21 Yes
LT1763MPDE 4x3 DFN-12 MP $8.50 $5.95 No
LT1763MPDE-1.5 4x3 DFN-12 MP $8.50 $5.95 No
LT1763MPDE-1.5#PBF 4x3 DFN-12 MP $8.50 $5.95 Yes
LT1763MPDE-1.5#TRPBF 4x3 DFN-12 MP $6.01 Yes
LT1763MPDE-1.8#PBF 4x3 DFN-12 MP $8.50 $5.95 Yes
LT1763MPDE-1.8#TRPBF 4x3 DFN-12 MP $6.01 Yes
LT1763MPDE-2.5#PBF 4x3 DFN-12 MP $8.50 $5.95 Yes
LT1763MPDE-2.5#TRPBF 4x3 DFN-12 MP $6.01 Yes
LT1763MPDE-3.3 4x3 DFN-12 MP $8.50 $5.95 No
LT1763MPDE-3.3#PBF 4x3 DFN-12 MP $8.50 $5.95 Yes
LT1763MPDE-3.3#TR 4x3 DFN-12 MP $6.01 No
LT1763MPDE-3.3#TRPBF 4x3 DFN-12 MP $6.01 Yes
LT1763MPDE-3#PBF 4x3 DFN-12 MP $8.50 $5.95 Yes
LT1763MPDE-3#TRPBF 4x3 DFN-12 MP $6.01 Yes
LT1763MPDE-5#PBF 4x3 DFN-12 MP $8.50 $5.95 Yes
LT1763MPDE-5#TRPBF 4x3 DFN-12 MP $6.01 Yes
LT1763MPDE#PBF 4x3 DFN-12 MP $8.50 $5.95 Yes
LT1763MPDE#TR 4x3 DFN-12 MP $6.01 No
LT1763MPDE#TRPBF 4x3 DFN-12 MP $6.01 Yes
LT1763MPS8 SO-8 MP $8.50 $5.95 No
LT1763MPS8-2.5#PBF SO-8 MP $8.50 $5.95 Yes
LT1763MPS8-2.5#TRPBF SO-8 MP $8.56 $6.01 Yes
LT1763MPS8-5#PBF SO-8 MP $8.50 $5.95 Yes
LT1763MPS8-5#TRPBF SO-8 MP $8.56 $6.01 Yes
LT1763MPS8#PBF SO-8 MP $8.50 $5.95 Yes
LT1763MPS8#TR SO-8 MP $8.56 $6.01 No
LT1763MPS8#TRPBF SO-8 MP $8.56 $6.01 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
DC368A LT1763CS8 Demo Board | Low Noise LDO Regulator, 2.3V ≤ VIN ≤ 20V, Vout = 1.22V/1.5V/1.8V/2.5V/3.3V/5V @ 500mA $75.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports 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
LT1763IS8#PBF SO-8 I $3.07 $2.15 Yes
LT1763IS8#TRPBF SO-8 I $2.21 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
  • Battery-Powered Systems
  • Noise-Sensitive Instrumentation Systems

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Design Tools

LTspice

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

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Models for the following parts are available in LTspice:
LT1763
LT1763-1.5
LT1763-1.8
LT1763-2.5
LT1763-3
LT1763-3.3
LT1763-5

Technical Support