LP3990MFX-1.2 The Texas Instruments LP3990MFX-1.2 is a 150-mA low-IQ, low-dropout linear voltage regulator. It offers a fixed output voltage of 1.2V, with an input voltage range of 2V to 6V.
Mfr Part #:

LP3990MFX-1.2

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LP3990MFX-1.2 is a 150-mA low-IQ, low-dropout linear voltage regulator. It offers a fixed output voltage of 1.2V, with an input voltage range of 2V to 6V.
✓ Total Stock: 723,200 pcs
$ Price Range: $0.28

LP3990MFX-1.2 Available from 1 distributor

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LP3990MFX-1.2 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Accuracy
Load Capacitance
Mounting Type
Noise
Output Current
SVHC Present
Thermal Resistance

LP3990MFX-1.2 Description

Short technical summary and product information.

The Texas Instruments LP3990MFX-1.2 is a 150-mA linear voltage regulator designed for digital applications. It features a low quiescent current (Iq) of 43 µA when enabled and less than 10 nA when disabled, making it suitable for power-sensitive designs.

 

This LDO regulator provides a stable output voltage of 1.2V with a maximum output current of 150 mA. The input voltage range is from 2V to 6V, and it boasts a low dropout voltage of 120 mV typical. The device offers low output noise of 150 µVrms and a PSRR of 55 dB at 1 kHz.

 

Key features include thermal-overload and short-circuit protection, a logic-controlled enable pin, and stability with ceramic capacitors as low as 1 µF. The operating temperature range is -40°C to 125°C.

 

The LP3990MFX-1.2 is available in SOT-23, DSBGA, and WSON packages, supporting surface mount applications.

LP3990MFX-1.2 Quick Information

Product Type: Low-Dropout Voltage Regulator
Canonical Name: LP3990MFX-1.2 Low-IQ, Low-Dropout Voltage Regulator
Subcategory: LDO Regulators

LP3990MFX-1.2 Compliance

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

LP3990MFX-1.2 Estimated Pricing

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1+ $0.28 $0.28

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

LP3990MFX-1.2 Features

  • 150-mA output current capability.
  • Low quiescent current of 43 µA.
  • Low dropout voltage of 120 mV typical.
  • Low output noise of 150 µVrms.
  • Wide operating temperature range.

LP3990MFX-1.2 Applications

  • Ideal for digital power applications.
  • Suitable for battery-powered devices.
  • Provides stable voltage rails.
  • Low noise sensitive circuits.

LP3990MFX-1.2 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LP3990MFX-1.2?

The input voltage range is 2V to 6V.

What package options are available for the LP3990MFX-1.2?

Available packages include SOT-23-5, DSBGA, and WSON.

What is the operating temperature range?

The operating temperature range is -40°C to 125°C.

What is the dropout voltage of this regulator?

The typical dropout voltage is 120mV.

What is the quiescent current consumption?

The typical quiescent current is 43µA when enabled, and less than 10nA when disabled.

What is the output voltage accuracy?

The output voltage accuracy is ±1% at room temperature.

What is the typical PSRR at 1kHz?

The typical power supply rejection ratio is 55dB at 1kHz.

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