LT1129IQ The LT1129IQ from Linear Technology is a micropower low dropout regulator designed for battery-powered systems. It offers 700mA output current with a low dropout voltage of 400mV.
Mfr Part #:

LT1129IQ

Available from 1 distributors
Mfr Name: LIN TECH
LIN TECH
The LT1129IQ from Linear Technology is a micropower low dropout regulator designed for battery-powered systems. It offers 700mA output current with a low dropout voltage of 400mV.
✓ Total Stock: 37 pcs

LT1129IQ Available from 1 distributor

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LT1129IQ Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Industrial Grade
Input Voltage
Mounting Type
Output Current
Package / Case
SVHC Present

LT1129IQ Description

Short technical summary and product information.

The LT1129IQ is a micropower low dropout regulator from Linear Technology, designed for efficient power management in battery-operated devices. It can supply up to 700mA of output current with a minimal dropout voltage of 400mV at maximum output. The device features a low quiescent current of 50μA during operation and 16μA in shutdown mode, which is crucial for extending battery life.

 

Key features include stability with small output capacitors as low as 3.3μF, reverse battery protection, and controlled quiescent current in dropout. The LT1129IQ is available in multiple package options, including surface-mount SOT-223 and DD-Pak, as well as the TO-220 package, offering flexibility for various design requirements.

 

This regulator is suitable for applications such as low current regulation, post-regulation for switching supplies, and 5V to 3.3V logic regulation. Its ability to operate with reverse input voltages without reverse current flow makes it ideal for backup power situations.

LT1129IQ Quick Information

Product Type: Voltage Regulator - Linear
Series: LT1129
Canonical Name: LT1129IQ Micropower Low Dropout Regulator with Shutdown
Subcategory: Low Dropout Regulator

LT1129IQ Compliance

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

LT1129IQ Features

  • Micropower low dropout regulator
  • 700mA output current capability
  • 400mV dropout voltage
  • Low 50μA operating quiescent current
  • Stable with 3.3μF output capacitor

LT1129IQ Applications

  • Ideal for battery-powered systems
  • Suitable for low current regulation
  • Used as post regulator for switching supplies
  • Powers 5V to 3.3V logic circuits
  • Effective in backup power situations

LT1129IQ FAQs

7 frequently asked questions generated from this part’s specifications.
What is the dropout voltage of the LT1129IQ?

The dropout voltage of the LT1129IQ is 400mV at maximum output current.

What is the maximum output current for the LT1129IQ?

The LT1129IQ can supply a maximum output current of 700mA.

What is the quiescent current of the LT1129IQ when operating?

The operating quiescent current for the LT1129IQ is typically 50μA.

What is the quiescent current of the LT1129IQ in shutdown mode?

In shutdown mode, the quiescent current for the LT1129IQ is typically 16μA.

What is the required output capacitance for stability with the LT1129IQ?

The LT1129IQ is stable with an output capacitor as small as 3.3μF.

What package types are available for the LT1129IQ?

The LT1129IQ is available in SOT-223, DD-Pak, and TO-220 packages.

Is the LT1129IQ RoHS compliant?

The LT1129IQ is listed as RoHS3 Compliant.

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