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LD3985M18R The STMicroelectronics LD3985M18R is an LDO Voltage Regulator with a fixed 1.8V output and 150mA current capability. It is supplied in a compact SOT-23-5 package.
Mfr Part #:

LD3985M18R

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics LD3985M18R is an LDO Voltage Regulator with a fixed 1.8V output and 150mA current capability. It is supplied in a compact SOT-23-5 package.
✓ Total Stock: 135,533 pcs
$ Price Range: $0.28

LD3985M18R Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
120,533 pcs
On Request
120533 pcs On Request 1 On Request On Request On Request On Request On Request
Fe Components ✓
Non-Authorised Inventory information
15,000 pcs
On Request
15000 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.

LD3985M18R Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Current
Failure Rate
Height
Lead Style
Length
Mounting Style
Mounting Type
Number of Outputs
Number of Regulators
Operating Temperature
Output Configuration
Output Current
Output Type
Output Voltage
PSRR
Product Type
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Quiescent Current
Storage Temperature
Supplier Device Package
Tape & Reel
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LD3985M18R Description

Short technical summary and product information.

The STMicroelectronics LD3985M18R is a linear low-dropout (LDO) voltage regulator designed for various applications requiring a stable 1.8V output. It can deliver up to 150mA of current and operates with an input voltage range from 2.5V to 6V.

 

Key electrical characteristics include a low quiescent current of 150 µA and a maximum dropout voltage of 100 mV. The regulator offers good performance with a voltage regulation accuracy of 3% and line/load regulation figures of 0.1%/V and 0.008%/mA, respectively. Protection features such as over-current and over-temperature shutdown are integrated for enhanced reliability.

 

This component is housed in a SOT-23-5 surface-mount package, making it suitable for space-constrained designs. The operating temperature range is from -40°C to +125°C, ensuring operation in diverse environmental conditions. The LD3985M18R is ideal for power management in portable electronics, battery-powered devices, and other applications where efficiency and stability are critical.

LD3985M18R Quick Information

Product Type: LDO Voltage Regulator
Series: LD3985M
Canonical Name: STMicroelectronics LD3985M18R LDO Voltage Regulator
Subcategory: PMIC - Power Management ICs

LD3985M18R Compliance

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

LD3985M18R Estimated Pricing

Qty Low High
1+ $0.28 $0.28

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

LD3985M18R Features

  • Fixed 1.8V output voltage.
  • 150mA maximum output current.
  • Low quiescent current of 150 µA.
  • SOT-23-5 surface mount package.
  • Wide operating temperature range.

LD3985M18R Applications

  • Ideal for portable electronic devices.
  • Suitable for battery-powered applications.
  • Used in low-power sensor systems.
  • Provides stable voltage for microcontrollers.

LD3985M18R FAQs

7 frequently asked questions generated from this part’s specifications.
What is the fixed output voltage of the LD3985M18R?

The fixed output voltage is 1.8 V.

What is the maximum output current of the LD3985M18R?

The maximum output current is 150 mA.

What is the input voltage range for the LD3985M18R?

The input voltage range is 2.5 V to 6 V.

What is the maximum dropout voltage of the LD3985M18R?

The maximum dropout voltage is 100 mV.

What is the quiescent current of the LD3985M18R?

The quiescent current is 150 µA.

What is the operating temperature range of the LD3985M18R?

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

What package does the LD3985M18R come in?

The LD3985M18R is available in a SOT-23-5 package.

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