LA5752-E Equivalent & Substitute Parts

Part Overview

The LA5752-E is a buck switching regulator IC manufactured by onsemi, designed for step-down voltage conversion with a fixed 5V output. This through-hole component operates across an input voltage range of 7V to 28V and is housed in a TO-220-5 package with formed leads. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

LA5752-E

onsemiIn Stock: 767LA5752-E Datasheet

Current PartRFQ

TL2575-05IKV

Texas InstrumentsIn Stock: 1666TL2575-05IKV Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LA5752-E is determined by the following critical parameters:

• Topology & Function: Buck (step-down) switching regulator topology
• Output Configuration: Positive fixed 5V output
• Package Type: TO-220-5 formed leads (through-hole mounting)
• Input Voltage Range: Minimum 7V to maximum 28V compatibility
• Output Type: Fixed voltage regulation at 5V
• Number of Outputs: Single output configuration

The TL2575-05IKV from Texas Instruments meets these core substitution criteria. Both devices share identical topology, output voltage specification, package form factor, and through-hole mounting characteristics. The substitute part maintains functional equivalence for applications requiring 5V buck regulation in TO-220-5 packaging.

Parameter Comparison

Engineering Selection Recommendations

The TL2575-05IKV is a direct functional substitute for the LA5752-E in applications requiring 5V buck regulation. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete LA5752-E.

Key considerations for selection:

• Input Voltage Compatibility: The TL2575-05IKV accepts a wider input range (4.75V to 40V) compared to the LA5752-E (7V to 28V). Applications operating within the LA5752-E input window remain fully compatible.
• Output Current: The TL2575-05IKV specifies 1A output current capability, providing defined performance parameters for load calculations.
• Temperature Range: The LA5752-E operates to 150°C junction temperature, exceeding the TL2575-05IKV specification of 125°C. Applications requiring extended high-temperature operation must account for this difference.
• Switching Frequency: The TL2575-05IKV operates at 52kHz versus the LA5752-E at 60kHz. This minor frequency difference does not affect functional substitution for standard buck regulation applications.
• Compliance: Both devices carry REACH Unaffected status and EAR99 ECCN classification. The TL2575-05IKV is RoHS3 compliant, supporting modern regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the TL2575-05IKV directly replace the LA5752-E in existing designs?

A: Yes, for applications operating within the overlapping input voltage range (7V to 28V) and requiring 5V fixed output regulation. Both devices use identical TO-220-5 package pinouts and share buck topology. PCB layout modifications are not required for package compatibility.

Q: What are the key differences between these parts?

A: The primary differences are product status (LA5752-E is obsolete; TL2575-05IKV is active), input voltage range (TL2575-05IKV accepts lower minimum and higher maximum inputs), maximum junction temperature (LA5752-E rated to 150°C versus TL2575-05IKV at 125°C), and switching frequency (60kHz versus 52kHz). The TL2575-05IKV explicitly specifies 1A output current capability.

Q: Are there thermal considerations when substituting?

A: The LA5752-E supports operation to 150°C junction temperature, while the TL2575-05IKV is rated to 125°C. Applications requiring sustained operation above 125°C junction temperature must evaluate thermal management and load conditions to ensure the substitute part remains within specification.

Q: Does the switching frequency difference affect circuit performance?

A: The 8kHz frequency difference (60kHz to 52kHz) is minor and does not affect functional substitution for standard buck regulation. Output filter design may require minor adjustments, but both frequencies fall within typical buck regulator operating ranges for 5V applications.

Q: What is the package compatibility status?

A: Both the LA5752-E and TL2575-05IKV use TO-220-5 formed leads packaging with through-hole mounting. Pin assignments are identical, allowing direct PCB mounting without layout modifications.