LM5033SDX Equivalent & Substitute Parts Reference

Part Overview

The LM5033SDX from Texas Instruments is a Power Management IC (PMIC) designed for step-up/step-down DC-DC regulation, supporting full-bridge, half-bridge, and push-pull topologies. Its function includes frequency control, soft start, synchronous rectification, and clock synchronization. This product is classified as obsolete, requiring identification of direct alternatives for continued use in new or replacement designs. Substitution is necessary to maintain compatibility in critical power management applications while addressing supply continuity and regulatory compliance.

Substiute Parts

LM5033SDX

Texas InstrumentsIn Stock: 1131LM5033SDX Datasheet

Current PartRFQ

LM5033SDX/NOPB

Texas InstrumentsIn Stock: 9183LM5033SDX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute grouping is determined strictly by matching electrical and mechanical parameters provided for the LM5033SDX product category. Required fields for equivalence include regulator topology (full-bridge, half-bridge, push-pull), output type (PWM signal, positive configuration), voltage supply range, switching frequency, synchronous rectifier and clock sync capability, control features, operating temperature, package / case, and mounting type. Substitution is allowed only when all these core parameters align, ensuring compatibility in new and existing designs.

Parameter Comparison

Engineering Selection Recommendations

When selecting a substitute for the LM5033SDX, product status, compliance, and certification are the primary considerations. LM5033SDX/NOPB is listed as active and meets ROHS3 compliance, while LM5033SDX is obsolete and non-compliant with RoHS. Both parts have equivalent electrical, mechanical, and regulatory parameters, supporting direct interchangeability within the same package and footprint for PMIC applications requiring step-up/step-down regulation. REACH and MSL status are also matched. No additional technical criteria are introduced beyond the provided specifications.

Frequently Asked Questions (FAQ)

What parameters must be matched for PMIC substitution?

Substitute selection requires identical regulator topology, electrical function, supply voltage range, switching frequency, output configuration, package/case, mounting type, and control features.

Can LM5033SDX and LM5033SDX/NOPB be used interchangeably?

Yes. Both parts share identical key parameters, package, and functionality for power management (PMIC) applications.

Is RoHS compliance necessary for substitution?

RoHS compliance may be required by regulatory standards. LM5033SDX/NOPB is ROHS3 compliant; LM5033SDX is not.

Do both devices support the same package and footprint?

Both components use the 10-WDFN Exposed Pad / 10-WSON (4x4) package and support surface mount assembly.

Is there a difference in inventory or availability?

LM5033SDX is obsolete; LM5033SDX/NOPB is active, with current inventory listed.

Are operating temperature and supply voltage identical?

Both parts operate from -40°C to 125°C (TJ) and support a supply voltage of 15V ~ 90V.

Are the control features matched for both devices?

Both devices include frequency control and soft start features, supporting synchronous rectification and clock synchronization.

How do regulatory and export classifications compare?

Both parts are listed with ECCN EAR99 and REACH unaffected status.

Is the moisture sensitivity rating consistent?

Both LM5033SDX and LM5033SDX/NOPB have an MSL of 1 (Unlimited).