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LDS3985M18R The STMicroelectronics LDS3985M18R is a linear voltage regulator designed for efficient power management. It offers a fixed positive output and operates within a wide temperature range.
Mfr Part #:

LDS3985M18R

Available from 3 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics LDS3985M18R is a linear voltage regulator designed for efficient power management. It offers a fixed positive output and operates within a wide temperature range.
✓ Total Stock: 16,597 pcs
$ Price Range: $0.28

LDS3985M18R Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Fe Components ✓
Non-Authorised Inventory information
12,000 pcs
On Request
12000 pcs On Request 1 On Request On Request On Request On Request On Request
Risen Electronics ✓
Non-Authorised Inventory information
3,000 pcs
On Request
3000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Xingangxin ✓
Non-Authorised Inventory information
1,597 pcs
On Request
1597 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

LDS3985M18R Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Current
Lead Style
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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LDS3985M18R Description

Short technical summary and product information.

The LDS3985M18R from STMicroelectronics is a linear voltage regulator IC with a fixed output voltage and a maximum output current of 150 µA. It is designed to operate from an input voltage of up to 6V and features a low quiescent current of 150 µA. The regulator includes protection features such as over current and over temperature protection, along with a shutdown control feature.

 

This device is supplied in a SOT-23-5 (SC-74A, SOT-753) surface-mount package, making it suitable for space-constrained applications. The operating temperature range is from -40°C to 125°C, ensuring reliable performance in various environmental conditions. The dropout voltage is specified as 0.25V at 300mA, indicating efficient operation.

 

Key electrical characteristics include a PSRR of 55dB to 50dB across the 1kHz to 10kHz frequency range. The LDS3985M18R is a single-output regulator, providing a positive voltage regulation. Its fixed output type simplifies circuit design for applications requiring stable voltage rails.

 

This component is ideal for power management in portable devices, consumer electronics, and industrial control systems where space and power efficiency are critical. The surface-mount package facilitates automated assembly processes.

LDS3985M18R Quick Information

Product Type: Linear Voltage Regulator
Series: LDS3985
Canonical Name: LDS3985M18R Linear Voltage Regulator
Subcategory: Linear

LDS3985M18R Compliance

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

LDS3985M18R Estimated Pricing

Qty Low High
1+ $0.28 $0.28

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

LDS3985M18R Features

  • Fixed positive linear voltage regulator.
  • 150µA output current capability.
  • Low dropout voltage of 0.25V.
  • Wide -40°C to 125°C operating temperature.
  • SOT-23-5 surface-mount package.

LDS3985M18R Applications

  • Ideal for portable electronic devices.
  • Suitable for power management circuits.
  • Used in consumer electronics.
  • Applicable in industrial control systems.

LDS3985M18R FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage of the LDS3985M18R?

The operating voltage of the LDS3985M18R is 6V.

What is the operating temperature range for the LDS3985M18R?

The operating temperature range for the LDS3985M18R is -40°C to 125°C.

What is the package type for the LDS3985M18R?

The LDS3985M18R is available in a SOT-23-5 package.

What is the output current of the LDS3985M18R?

The output current of the LDS3985M18R is 150µA.

Does the LDS3985M18R have protection features?

Yes, it includes over current and over temperature protection.

What is the dropout voltage of the LDS3985M18R?

The maximum dropout voltage is 0.25V at 300mA.

What is the mounting type for the LDS3985M18R?

The mounting type for the LDS3985M18R is Surface Mount.

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