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LD3985M30R The STMicroelectronics LD3985M30R is a linear voltage regulator IC providing a fixed 3V output at up to 150mA. It is housed in a compact SOT-23-5 package.
Mfr Part #:

LD3985M30R

Available from 5 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics LD3985M30R is a linear voltage regulator IC providing a fixed 3V output at up to 150mA. It is housed in a compact SOT-23-5 package.
✓ Total Stock: 230,764 pcs
$ Price Range: $0.28

LD3985M30R Available from 5 distributors

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Romaks Technologies ✓
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200,889 pcs
On Request
200889 pcs On Request 1 On Request On Request On Request On Request On Request
Fe Components ✓
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18,000 pcs
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18000 pcs On Request 1 On Request On Request On Request On Request On Request
Hybrid Electronics ✓
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5,875 pcs
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5875 pcs On Request 1 On Request On Request 1017 On Request On Request
Risen Electronics ✓
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3,000 pcs
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3000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Smaxon Electronics ✓
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3,000 pcs
On Request
3000 pcs On Request 1 On Request On Request 19+ On Request On Request
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LD3985M30R Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Current
Mounting Type
Number of Regulators
Operating Temperature
Output Configuration
Output Type
PSRR
Protection Features
SVHC Present
Supplier Device Package
Voltage
Voltage Dropout (Max)
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LD3985M30R Description

Short technical summary and product information.

The STMicroelectronics LD3985M30R is a linear voltage regulator IC designed for power management applications. It offers a fixed output voltage of 3V and can supply a maximum current of 150mA.

 

Key electrical specifications include a maximum input voltage of 6V and a low dropout voltage of 0.1V at 150mA. The quiescent current is typically 150 µA, with a maximum supply current of 250 µA. Power supply rejection ratio (PSRR) ranges from 60dB to 50dB across a frequency range of 1kHz to 10kHz. Control features include an enable pin, and protection features offer over-current and over-temperature shutdown.

 

This device operates within a temperature range of -40°C to 125°C. It is available in a surface-mount SOT-23-5 package, also referred to as SC-74A or SOT-753. The RoHS status is ROHS3 Compliant, and it has a Moisture Sensitivity Level (MSL) of 1.

LD3985M30R Quick Information

Product Type: Linear Voltage Regulator IC
Canonical Name: LD3985M30R Linear Voltage Regulator IC
Subcategory: PMIC - Voltage Regulators - Linear

LD3985M30R Compliance

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

LD3985M30R Estimated Pricing

Qty Low High
1+ $0.28 $0.28

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

LD3985M30R Features

  • Fixed 3V output voltage.
  • 150mA maximum output current.
  • Low 0.1V dropout voltage.
  • SOT-23-5 surface mount package.
  • Over current and over temperature protection.

LD3985M30R Applications

  • Ideal for battery-powered portable devices.
  • Used in low-power microcontroller power supplies.
  • Suitable for wireless sensor modules.
  • Applicable in industrial control systems.

LD3985M30R FAQs

7 frequently asked questions generated from this part’s specifications.
What is the output voltage of the LD3985M30R?

The fixed output voltage is 3V.

What is the maximum dropout voltage?

The maximum dropout voltage is 0.1V at 150mA load.

What is the maximum output current?

The output current is 150mA.

What is the operating temperature range?

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

What package is the LD3985M30R available in?

It is available in SC-74A, SOT-753, and SOT-23-5 surface-mount packages.

What protection features does the LD3985M30R have?

It includes over current and over temperature protection.

Does the LD3985M30R have an enable control?

Yes, it has an enable control feature.

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