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LDK120C31R The STMicroelectronics LDK120C31R is a linear voltage regulator IC. It provides a fixed 3.1V output at up to 200mA current.
Mfr Part #:

LDK120C31R

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics LDK120C31R is a linear voltage regulator IC. It provides a fixed 3.1V output at up to 200mA current.
✓ Total Stock: 17,000 pcs
$ Price Range: $0.28

LDK120C31R Available from 2 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
5,000 pcs
On Request
5000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
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.

LDK120C31R 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
Supplier Device Package
Voltage
Voltage Dropout (Max)
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LDK120C31R Description

Short technical summary and product information.

The STMicroelectronics LDK120C31R is a linear voltage regulator designed for power management applications. It features a fixed output voltage of 3.1V and can supply a continuous output current of up to 200mA. The regulator has a low dropout voltage of 0.3V at 200mA, making it efficient for battery-powered devices.

 

Key electrical characteristics include an input voltage range up to 5.5V and a quiescent current of 60 µA. Protection features such as over current and over temperature are integrated for enhanced reliability. The device operates within a temperature range of -40°C to 125°C.

 

Packaged in a compact SOT-323-5 surface-mount case, the LDK120C31R is suitable for space-constrained designs. It is supplied in tape and reel packaging for automated assembly processes.

LDK120C31R Quick Information

Product Type: Linear Voltage Regulator
Series: LDK120
Canonical Name: STMicroelectronics LDK120C31R Linear Voltage Regulator
Subcategory: Linear Voltage Regulator

LDK120C31R Compliance

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

LDK120C31R Estimated Pricing

Qty Low High
1+ $0.28 $0.28

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

LDK120C31R Features

  • Fixed 3.1V positive output voltage.
  • 200mA maximum output current.
  • Low 0.3V dropout voltage.
  • Integrated over current protection.
  • Compact SOT-323-5 package.

LDK120C31R Applications

  • Power management circuits.
  • Battery-powered devices.
  • Portable electronics.
  • Low power applications.

LDK120C31R FAQs

7 frequently asked questions generated from this part’s specifications.
What is the output voltage of the LDK120C31R?

3.1V fixed.

What is the maximum input voltage?

5.5V.

What is the output current capability?

200mA.

What is the dropout voltage?

0.3V at 200mA.

What is the quiescent current?

60µA.

What is the operating temperature range?

-40°C to 125°C.

What package does the LDK120C31R come in?

SOT-323-5 (also 5-TSSOP, SC-70-5, SOT-353).

LDK120C31R Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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LDK120C15R
LDK120C15R
STMicroelectronics
LDK120C15R is a 1.5V fixed output LDO voltage regulator from STMicroelectronics. It delivers up to 200mA output current with a low dropout voltage of 0.3V at 200mA.
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