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Alternatives to Analog Devices LT1764AEQ

Analog Devices LT1764AEQ and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

LT1764AEQ compared against its qualified second sources
LT1764AEQAnalog DevicesLT1764AEQ#PBFAnalog DevicesLT1764EQ#PBFAnalog Devices+3more
FFF CompatibilityThe pinout, lead count, and package footprint are identical to the original LT1764AEQ.The DDPAK-5 physical package is identical in form factor and footprint.The electrical characteristics, including 3A output current, adjustable voltage range, low noise, and fast transient response, are identical.The pin assignment and package are identical to the target part.The DDPAK-5 package matches exactly.This non-A version is not designed for stability with low-ESR ceramic output capacitors, and typically requires a tantalum capacitor or output resistor to maintain stability.
AI Summary

LT1764AEQ by Analog Devices: LDO Voltage Regulators LT1764A - 3A, Fast Transient Response, Low Noise, LDO Regulators.

The LT1764AEQ#PBF is the official lead-free, RoHS-compliant direct replacement for the obsolete LT1764AEQ. It features the exact same specifications and package, and preserves the ceramic capacitor stability and improved transient response of the original 'A' series.

  • Direct lead-free/RoHS replacement from the original manufacturer (Analog Devices)
  • Stable with low-ESR ceramic output capacitors (unlike the non-A version)
  • Exact pinout and package match for direct drop-in replacement

The LT1764EQ#PBF is the non-A version of the original regulator. While it fits perfectly on the board and matches most electrical ratings, it requires a minimum output capacitor ESR for stability, meaning low-ESR ceramic capacitors cannot be used without external series resistance.

  • Drop-in pin-compatible part from the same base series
  • Identical 3A output current rating and 20V maximum input voltage limit
  • Requires output capacitor with minimum ESR (such as tantalum) for loop stability, unlike the ceramic-stable A-version.
Lifecycle StatusObsoleteActiveActive
Market AvailabilityDiscontinuedIn stockIn stock
REACHUnknownREACHREACH
RoHSRoHSRoHSRoHS
DescriptionLDO Voltage Regulators LT1764A - 3A, Fast Transient Response, Low Noise, LDO RegulatorsLinear Voltage Regulator IC Positive Adjustable 1 Output 3A DDPAK-5Linear Voltage Regulator IC Positive Adjustable 1 Output 3A DDPAK-5
ManufacturerAnalog DevicesAnalog DevicesAnalog Devices
TypeLDO Voltage RegulatorsPower Management (PMIC)Power Management (PMIC)
DatasheetOpenOpenOpen
Lead TimeUnknown12 weeks12 weeks
Country of OriginMY--
Export Control Class NumberEAR99EAR99EAR99
HTSUS Code8542390090--
Moisture Sensitivity Level---

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Frequently asked questions

Yes. The Analog Devices LT1764AEQ is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.

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