LT1129MPST-3.3 The LT1129MPST-3.3 is a micropower low dropout linear voltage regulator from Analog Devices. It provides a fixed 3.3V output at up to 700mA with a low dropout voltage of 400mV.
Mfr Part #:

LT1129MPST-3.3

Available from 1 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The LT1129MPST-3.3 is a micropower low dropout linear voltage regulator from Analog Devices. It provides a fixed 3.3V output at up to 700mA with a low dropout voltage of 400mV.
✓ Total Stock: 2,029 pcs
$ Price Range: $0.30

LT1129MPST-3.3 Available from 1 distributor

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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2,029 pcs
2029 pcs On Request 1 On Request On Request 24+ On Request On Request

LT1129MPST-3.3 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Automotive Grade
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Industrial Grade
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Military Grade
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LT1129MPST-3.3 Description

Short technical summary and product information.

The LT1129MPST-3.3 is a micropower low dropout linear voltage regulator designed for battery-powered systems. It offers a fixed 3.3V output voltage and can supply up to 700mA of output current with a typical dropout voltage of 400mV at maximum output. The device features a low quiescent current of 50µA during operation and 16µA in shutdown mode, with controlled quiescent current even in dropout.

 

Key features include stability with small output capacitors as low as 3.3µF, reverse battery protection, and no reverse output current flow. The operating temperature range is -55°C to 125°C. The regulator is available in a surface mount SOT-223-3 package.

 

This regulator is suitable for applications requiring low power consumption and stable voltage regulation, such as low current regulators, battery-powered devices, and post-regulators for switching supplies.

LT1129MPST-3.3 Quick Information

Product Type: Linear Voltage Regulator
Canonical Name: LT1129MPST-3.3 Micropower Low Dropout Regulator
Subcategory: Linear

LT1129MPST-3.3 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LT1129MPST-3.3 Estimated Pricing

Qty Low High
1+ $0.30 $0.30

Estimated market price range - modelled values for guidance only, not live distributor offers.

LT1129MPST-3.3 Features

  • Micropower low dropout regulator.
  • 700mA output current capability.
  • Low 400mV dropout voltage.
  • Stable with 3.3µF output capacitor.
  • Operates from -55°C to 125°C.

LT1129MPST-3.3 Applications

  • Ideal for battery-powered systems.
  • Suitable for low current regulation.
  • Used as post-regulator for switchers.
  • Provides stable 3.3V logic supply.

LT1129MPST-3.3 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the fixed output voltage of the LT1129MPST-3.3?

The fixed output voltage is 3.3V.

What is the adjustable output voltage range of the regulator?

The adjustable output voltage ranges from 3.8V to 30V.

What is the maximum input voltage supported?

The maximum input voltage supported is 30V.

What is the maximum output current of this regulator?

The maximum output current is 700mA.

What package does the LT1129MPST-3.3 come in?

It comes in a SOT-223-3 surface mount package.

What is the dropout voltage at maximum load?

The dropout voltage is 400mV at maximum output current.

What is the operating temperature range?

The device operates from -55°C to 125°C.

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