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LT1764 3 Amp Low Dropout (LDO) Regulator

Analog Devices' fast transient response regulators for RF applications

Image of Analog Devices' LT1764 3 Amp Low Dropout (LDO) Regulator Analog Devices LT1764 is a 3 A low dropout regulator optimized for fast transient response. The regulator is capable of supplying 3 A of output current with a dropout voltage of 340 mV. The device is available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V, and as an adjustable device with a 1.21 V reference voltage. Output voltage range is from 1.21 V to 20 V. The LT1764 regulators are stable with output capacitors as low as 10 μF.

Operating quiescent current is 1 mA, dropping to <1 μA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. In addition to fast transient response, the LT1764 has very low output voltage noise which makes the device ideal for sensitive RF supply applications. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting, and reverse current protection. The regular comes in a TO-263-6/5-DDPAK package that has a -40°C to +125°C temperature range. The LT1764 is ideal for logic power supplies, switching power supplies, and sensitive noise RF applications.

Features
  • Overcurrent, overtemperature, reverse polarity
  • Optimized for fast transient response
  • Output current: 3 A
  • Dropout voltage: 340 mV at 3 A
  • Low noise: 40 μVRMS (10 Hz to 100 kHz)
  • 1 mA quiescent current
  • Voltage input max: 20 V
  • Voltage output range: 1.21 V to 20 V
  • Current output: 3 A
  • Temperature operating range: -40°C to +125°C
  • Package/case: TO-263-6, 5-DDPAK
Applications
  • 2.5 V to 3.3 V logic power supplies
  • Post regulation for switching supplies
  • Radio frequency (RF)

LT1764 3 Amp Low Dropout (LDO) Regulator

ImageManufacturer Part NumberDescriptionOutput TypeVoltage - Output (Min/Fixed)Available QuantityView Details
IC REG LINEAR POS ADJ 3A 5DDPAKLT1764AEQ#PBFIC REG LINEAR POS ADJ 3A 5DDPAKAdjustable1.21V8742 - ImmediateView Details
IC REG LINEAR POS ADJ 3A 5DDPAKLT1764AEQ#TRPBFIC REG LINEAR POS ADJ 3A 5DDPAKAdjustable1.21V4430 - ImmediateView Details
IC REG LINEAR 1.5V 3A 5DDPAKLT1764AEQ-1.5#PBFIC REG LINEAR 1.5V 3A 5DDPAKFixed1.5V359 - ImmediateView Details
IC REG LINEAR 1.8V 3A 5DDPAKLT1764AEQ-1.8#PBFIC REG LINEAR 1.8V 3A 5DDPAKFixed1.8V743 - ImmediateView Details
IC REG LINEAR 1.8V 3A 5DDPAKLT1764AEQ-1.8#TRPBFIC REG LINEAR 1.8V 3A 5DDPAKFixed1.8V0View Details
Published: 2017-12-15