LR12K4-G The Supertex LR12K4-G is a high input voltage, adjustable 3-terminal linear regulator. It features a wide input voltage range and adjustable output voltage.
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LR12K4-G

Available from 1 distributors
Mfr Name: SUP
SUP
The Supertex LR12K4-G is a high input voltage, adjustable 3-terminal linear regulator. It features a wide input voltage range and adjustable output voltage.
✓ Total Stock: 800 pcs

LR12K4-G Available from 1 distributor

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LR12K4-G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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LR12K4-G Description

Short technical summary and product information.

The Supertex LR12K4-G is a versatile adjustable linear regulator designed for high voltage applications. It operates with an input voltage range from 13.2V to 100V and allows for an adjustable output voltage from 1.20V to 88V. This regulator is stable with a 100nF output capacitor and requires a minimum DC output current of 500µA for stability.

 

Key features include a 5% reference voltage tolerance, output current limiting up to 100mA, and over-temperature protection. The output voltage is set using two external resistors, R1 and R2, with an internal bias current of typically 10µA. The device is available in multiple package options: TO-252, 8-Lead SOIC, and TO-92.

 

Applications for the LR12K4-G include DC/DC SMPS startup circuits, adjustable high voltage constant current sources, industrial controls, motor controls, battery-powered systems, power supplies, telecom applications, LED drivers, and automotive applications.

LR12K4-G Quick Information

Product Type: Linear Regulator
Series: LR12
Canonical Name: LR12 High Input Voltage, Adjustable 3-Terminal Linear Regulator
Subcategory: Voltage Regulators - Linear

LR12K4-G Compliance

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

LR12K4-G Features

  • Wide 13.2V to 100V input voltage range.
  • Adjustable output voltage from 1.20V to 88V.
  • Output current limiting to 100mA maximum.
  • Over-temperature protection included.
  • Available in TO-252, SOIC, and TO-92 packages.

LR12K4-G Applications

  • Used in DC/DC SMPS startup circuits.
  • Suitable for high voltage constant current sources.
  • Applicable in industrial control systems.
  • Designed for automotive applications.
  • Ideal for LED driver circuits.

LR12K4-G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LR12K4-G?

The input voltage range is 13.2V to 100V.

What is the output voltage range of the LR12K4-G?

The output voltage is adjustable from 1.20V to 88V, provided the input voltage is at least 12V greater than the output voltage.

What is the maximum output current of the LR12K4-G?

The output current is limited to 100mA maximum.

What is the operating ambient temperature range?

The operating ambient temperature range is -40°C to +85°C.

What packages are available for the LR12K4-G?

The LR12K4-G is available in TO-252, 8-Lead SOIC, and TO-92 packages.

What is the minimum input-to-output voltage difference required?

The input voltage must be at least 12V greater than the output voltage.

Is an output capacitor required for stability?

Yes, a 100nF output capacitor is required for stability.

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