LM346N

Robust and reliable amplification solution for demanding systems
7,422 Effective Inventory

LM346N

Effective Inventory7,422

Robust and reliable amplification solution for demanding systems

  • Manufacturer Part # : LM346N

  • Package/Case: PDIP-16

  • Part Status : Obsolete

  • Brand: Stmicroelectronics

  • Product Categories : Instrumentation, OP Amps, Buffer Amps

Quality Assurance

Quality Assurance

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Certification

We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.

Shipping & Payment

Shipping & Payment

About Shipping

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Service & Packaging

Service & Packaging

About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

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LM346N DataSheet
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Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

Rapid Quote

Please submit RFQ for LM346N or email to us: Email: [email protected], we will contact you in 12 hours.

Details

The LM346N is a precision adjustable voltage regulator integrated circuit (IC) manufactured by Texas Instruments. It operates as a 2-terminal device with an adjustable output voltage and a reference voltage of 1.2V. The LM346N is capable of sourcing up to 100mA of output current while maintaining excellent regulation characteristics. Its adjustable output voltage range spans from the reference voltage up to 40V, making it suitable for a wide range of applications. The device offers high stability over varying load conditions and temperatures, ensuring reliable performance in demanding environments. With its low dropout voltage and high accuracy, the LM346N is commonly used in precision voltage regulation circuits, battery charging applications, and analog signal conditioning systems. Its compact TO-92 package and simple external component requirements enhance its versatility and ease of integration into various electronic designs

Key Features

  • Adjustable voltage output
  • Wide input voltage range
  • Low dropout voltage
  • Low quiescent current
  • Thermal shutdown protection
  • Adjustable current limit
  • Adjustable frequency
  • High ripple rejection
  • Rugged packages
  • Short circuit protection

Application

  • Adjustable voltage regulators
  • Power supplies
  • Battery chargers
  • Reference voltage generators
  • Instrumentation amplifiers
  • Signal conditioners
  • DC-DC converters
  • Automotive electronics
  • Industrial control systems
  • Motion control systems

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Part Life Cycle Code Obsolete Part Package Code DIP
Pin Count ! 16 Reach Compliance Code
ECCN Code EAR99 HTS Code ! 8542.33.00.01
Amplifier Type OPERATIONAL AMPLIFIER Average Bias Current-Max (IIB) 0.25 µA
Common-mode Reject Ratio-Nom 100 dB Input Offset Voltage-Max 7500 µV
JESD-30 Code R-PDIP-T16 Length 21.8 mm
Neg Supply Voltage Limit-Max -18 V Neg Supply Voltage-Nom (Vsup) -15 V
Number of Functions 4 Number of Terminals 16
Operating Temperature-Max 70 °C Operating Temperature-Min
Package Body Material PLASTIC/EPOXY Package Code DIP
Package Shape RECTANGULAR Package Style IN-LINE
Seated Height-Max 5.08 mm Slew Rate-Nom 0.4 V/us
Supply Voltage Limit-Max 18 V Supply Voltage-Nom (Vsup) 15 V
Surface Mount ! NO Temperature Grade ! COMMERCIAL
Terminal Form ! THROUGH-HOLE Terminal Pitch ! 2.54 mm
Terminal Position DUAL Unity Gain BW-Nom 1200
Width 7.62 mm Manufacturer STMicroelectronics
Product Category ! Operational Amplifiers - Op Amps RoHS Details
Mounting Style Through Hole Package / Case PDIP-16
Number of Channels 4 Channel Supply Voltage - Max +/- 22 V
GBP - Gain Bandwidth Product 1 MHz Output Current per Channel 20 mA
SR - Slew Rate 500 mV/us Vos - Input Offset Voltage 5 mV
Supply Voltage - Min +/- 1.5 V Minimum Operating Temperature 0 C
Maximum Operating Temperature ! + 70 C Ib - Input Bias Current 250 nA
Operating Supply Current 2 mA Shutdown No Shutdown
CMRR - Common Mode Rejection Ratio 80 dB en - Input Voltage Noise Density 28 nV/sqrt Hz
Series LM346 Brand STMicroelectronics
Dual Supply Voltage +/- 3 V, +/- 5 V, +/- 9 V Height 5.1 mm (Max)
Maximum Dual Supply Voltage +/- 22 V Minimum Dual Supply Voltage +/- 1.5 V
Operating Supply Voltage ! +/- 1.5 V to +/- 22 V Pd - Power Dissipation 500 mW (1/2 W)
Product Operational Amplifiers Product Type ! Op Amps - Operational Amplifiers
Factory Pack Quantity 25 Subcategory Amplifier ICs
Supply Type Dual Technology Bipolar
Voltage Gain dB 120 dB Unit Weight 0.057419 oz

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification LM346N PDF Download

FAQs

What is LM346N?

The LM346N is a precision adjustable voltage regulator designed by Texas Instruments. It is ideal for applications requiring a stable and accurate output voltage, such as power supplies, voltage references, and precision measurement equipment.

How Does LM346N Work?

The LM346N operates by comparing a reference voltage with a feedback voltage to regulate the output voltage. It utilizes an adjustable voltage reference and an error amplifier to achieve precise voltage regulation. The regulator features low dropout voltage and thermal shutdown protection for reliable operation.

How Many Pins does LM346N have and What are the Functions of the Pinout Configuration?

The LM346N is housed in a 3-lead TO-46 metal can package. The pinout configuration includes:

  • Vout: Output voltage pin.
  • Adj: Adjustable pin for setting the output voltage.
  • Vin: Input voltage pin.

What are the Pros and Cons of LM346N?

Pros:

  • Precision Regulation: Provides accurate and stable output voltage for critical applications.
  • Adjustable Output: Allows for flexibility in setting the output voltage to specific requirements.
  • Thermal Shutdown: Includes thermal shutdown protection for enhanced safety and reliability.
  • Minimal External Components: Operates with minimal external components, simplifying design and integration.

Cons:

  • Low Power Dissipation: May not be suitable for high power applications due to limited power dissipation capability.
  • Package Size: The 3-lead TO-46 metal can package may require additional mounting considerations.

Are There Any Equivalents/Alternatives to LM346N for Recommendation?

  • The LM317 from Texas Instruments is a widely used adjustable voltage regulator with similar functionality.
  • Alternatives to the LM346N include the LT1085 from Analog Devices and the ADJ111 from Analog Devices.

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