UDN2916LB Equivalent & Substitute Parts

Part Overview

The UDN2916LB is a bipolar motor driver IC manufactured by Allegro MicroSystems, designed for fully integrated control and power stage applications in brushed DC and bipolar stepper motor systems. This component operates as a half-bridge driver with parallel interface control, delivering 750mA output current across a 4.75V to 5.25V supply voltage range with load voltage capability from 10V to 45V.

The UDN2916LB is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements for applications utilizing this motor driver topology.

Substiute Parts

UDN2916LB

Allegro MicroSystemsIn Stock: 3187UDN2916LB Datasheet

Current PartRFQ

TB6562AFG,8,EL

Toshiba Semiconductor and StorageIn Stock: 10413TB6562AFG,8,EL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UDN2916LB is determined by the following critical parameters:

Functional Requirements:

• Motor driver type: Bipolar stepper and brushed DC motor capability
• Output configuration: Half-bridge (4) topology
• Interface: Parallel control
• Fully integrated control and power stage

Electrical Compatibility:

• Output current capability: Minimum 750mA
• Load voltage range: 10V to 45V minimum
• Supply voltage compatibility with system requirements
• Operating temperature range: Minimum -20°C to 85°C

Physical Compatibility:

• Surface mount technology
• Package footprint: 24-pin or compatible pin count with equivalent pinout

The TB6562AFG,8,EL from Toshiba Semiconductor and Storage qualifies as a substitute based on matching functional topology (bipolar motor driver, half-bridge configuration, parallel interface), exceeding output current specification (1.5A vs. 750mA), and supporting the required load voltage range (10V to 34V). Package differences and enhanced specifications do not preclude substitution when design integration is feasible.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TB6562AFG,8,EL is classified as active product status, ensuring ongoing manufacturer support, availability, and supply chain continuity compared to the obsolete UDN2916LB.

Compliance and Certification: The TB6562AFG,8,EL meets ROHS3 compliance requirements, whereas the UDN2916LB is RoHS non-compliant. For applications subject to RoHS directives or environmental regulations, the substitute part satisfies current regulatory requirements.

Electrical Performance: The TB6562AFG,8,EL provides superior output current capability (1.5A versus 750mA), offering design margin for motor drive applications. The substitute supports the minimum load voltage range (10V to 34V) required by the original specification, though the upper load voltage limit is reduced from 45V to 34V. System designs operating motors above 34V load voltage require alternative evaluation.

Thermal Characteristics: The UDN2916LB operates to 150°C junction temperature, while the TB6562AFG,8,EL operates to 85°C ambient temperature. Applications requiring extended high-temperature operation beyond 85°C ambient must verify thermal performance under actual operating conditions.

Package Integration: The TB6562AFG,8,EL uses a 30-pin BSOP package versus the 24-pin SOIC of the original part. PCB layout redesign is required to accommodate the different package footprint and pin configuration.

Frequently Asked Questions (FAQ)

Q: Can the TB6562AFG,8,EL directly replace the UDN2916LB without PCB modification?

A: No. The TB6562AFG,8,EL uses a 30-BSOP package while the UDN2916LB uses a 24-SOIC package. Different pin counts and footprints require PCB layout redesign and verification of pinout compatibility before implementation.

Q: What is the maximum load voltage for the TB6562AFG,8,EL substitute?

A: The TB6562AFG,8,EL supports load voltages from 10V to 34V. Applications requiring load voltages above 34V cannot use this substitute without additional circuit modifications or alternative component selection.

Q: Does the TB6562AFG,8,EL support both stepper and brushed DC motor applications?

A: The TB6562AFG,8,EL supports bipolar stepper motor applications with step resolution options (1, 1/2, 1/4). The original UDN2916LB supports both bipolar stepper and brushed DC motor types. Verify motor type compatibility with your specific application requirements.

Q: What is the supply voltage range difference between these parts?

A: The UDN2916LB operates with a 4.75V to 5.25V supply voltage, while the TB6562AFG,8,EL requires 10V to 34V supply voltage. System power supply design must be verified to ensure compatibility with the substitute part's voltage requirements.

Q: Is the TB6562AFG,8,EL suitable for high-temperature applications?

A: The TB6562AFG,8,EL operates to 85°C ambient temperature, compared to the UDN2916LB's 150°C junction temperature rating. Applications requiring operation above 85°C ambient require thermal analysis and may need alternative component selection.

Q: What compliance advantages does the TB6562AFG,8,EL provide?

A: The TB6562AFG,8,EL is ROHS3 compliant and carries active product status, ensuring regulatory compliance and long-term availability. The UDN2916LB is RoHS non-compliant and obsolete, limiting its use in new designs subject to environmental regulations.