LM723CH Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM723CH is an active linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This positive adjustable output regulator delivers 150mA maximum output current with input voltage capability up to 40V and adjustable output voltage range from 2V to 37V. The device is mounted in a TO-100-10 metal can package for through-hole applications.

The LM723CH maintains Active product status with full RoHS3 compliance and REACH affected designation. Equivalent and substitute parts are identified based on matching electrical specifications, output configuration, current rating, voltage parameters, control features, protection characteristics, and package compatibility.

Substiute Parts

LM723CH

Texas InstrumentsIn Stock: 3396LM723CH Datasheet

Current PartRFQ

LM723CH/NOPB

Texas InstrumentsIn Stock: 1582LM723CH/NOPB Datasheet

Parametric EquivalentRFQ

LM723CH

National SemiconductorIn Stock: 3385LM723CH Datasheet

Parametric EquivalentRFQ

LM723CH

National SemiconductorIn Stock: 3385LM723CH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM723CH are identified through parametric equivalence based on the following critical parameters:

Electrical Equivalence Criteria:

• Output configuration: Positive adjustable
• Number of regulators: Single output
• Maximum input voltage: 40V
• Output voltage range: 2V to 37V minimum, 37V maximum
• Output current rating: 150mA
• Control features: Current Limit and Frequency Control
• Protection: Short Circuit protection
• PSRR performance: 86dB ~ 74dB (50Hz ~ 10kHz)

Mechanical & Package Equivalence Criteria:

• Package type: TO-100-10 Metal Can
• Mounting: Through Hole
• Operating temperature range: 0°C ~ 70°C

Compliance Equivalence Criteria:

• Product status: Active
• RoHS compliance: ROHS3 Compliant
• REACH status: Affected

Substitute parts maintain identical electrical performance, package footprint, and thermal characteristics, enabling direct functional replacement in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and are suitable for direct replacement based on parametric equivalence. Selection between variants should consider the following factors:

Texas Instruments LM723CH/NOPB: This variant carries REACH Unaffected designation, which may be advantageous for applications subject to REACH compliance requirements. The part number suffix "/NOPB" indicates lead-free plating, consistent with RoHS3 compliance.

National Semiconductor LM723CH: This variant maintains REACH Affected status and RoHS compliance characteristics. MSL rating is vendor undefined, requiring verification against specific storage and handling requirements for your application environment.

Texas Instruments LM723CH (Primary): The original specification part with REACH Affected status and defined MSL Level 1 (Unlimited) provides maximum flexibility for storage and handling without moisture sensitivity constraints.

All three variants are electrically and mechanically interchangeable within the specified operating parameters and package footprint.

Frequently Asked Questions (FAQ)

Q: Can LM723CH/NOPB be used as a direct replacement for LM723CH?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications, output ratings, control features, and TO-100-10 package configuration. The "/NOPB" suffix indicates lead-free plating and REACH Unaffected status, making it suitable for direct substitution.

Q: What is the difference between Texas Instruments and National Semiconductor versions?

A: Both manufacturers produce the LM723CH with identical electrical performance, voltage ratings, current output, and package type. The primary difference is manufacturer designation and REACH compliance status. National Semiconductor version carries REACH Affected status with undefined MSL rating.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All listed substitutes use the TO-100-10 Metal Can package with through-hole mounting, ensuring identical PCB footprint and pin configuration compatibility.

Q: What parameters determine substitutability for the LM723CH?

A: Substitutability is determined by matching output configuration (positive adjustable), single regulator output, voltage specifications (40V input max, 2V-37V output range), 150mA current rating, control features (current limit and frequency control), short circuit protection, operating temperature range (0°C-70°C), and TO-100-10 package type.

Q: Does REACH status affect functional performance?

A: No. REACH status is a regulatory compliance designation and does not affect electrical performance or functional characteristics. Selection based on REACH status depends on your application's regulatory requirements and supply chain compliance obligations.

Q: What is MSL Level 1 (Unlimited)?

A: MSL Level 1 indicates unlimited shelf life without moisture sensitivity constraints. The component can be stored without desiccant packaging or time-limited exposure requirements, simplifying inventory management and logistics.