LM5030SDX Equivalent & Substitute Parts

Part Overview

The LM5030SDX is a DC-DC controller IC from Texas Instruments designed for multi-topology power management applications. It functions as a transistor driver for step-up/step-down conversion with support for full-bridge, half-bridge, and push-pull topologies. The device operates across a wide supply voltage range of 14V to 90V and includes integrated frequency control and soft start features.

The LM5030SDX is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for systems utilizing this controller topology.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Function	Step-Up/Step-Down DC-DC Controller
Output Type	Transistor Driver
Topology Support	Full-Bridge, Half-Bridge, Push-Pull
Output Configuration	Positive, Isolation Capable
Number of Outputs	2
Voltage - Supply (Vcc/Vdd)	14V ~ 90V
Frequency - Switching	200kHz, 600kHz
Duty Cycle (Max)	50%
Control Features	Frequency Control, Soft Start
Operating Temperature	-40°C ~ 105°C (TA)
Package / Case	10-WDFN Exposed Pad
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the LM5030SDX is determined by strict alignment across the following critical parameters:

Functional equivalence: Step-up/step-down DC-DC controller with transistor driver output
Topology support: Full-bridge, half-bridge, and push-pull capability
Output configuration: Positive, isolation-capable output
Supply voltage range: 14V ~ 90V operation
Switching frequency: 200kHz and 600kHz modes
Duty cycle specification: 50% maximum
Package compatibility: 10-WDFN exposed pad, surface mount
Control features: Frequency control and soft start functionality
Temperature range: -40°C ~ 105°C

The LM5030SD/NOPB meets all these criteria and qualifies as a parametric equivalent substitute.

Parameter Comparison

Parameter	LM5030SDX	LM5030SD/NOPB	Match
Manufacturer	Texas Instruments	Texas Instruments	✓
Category	Power Management (PMIC)	Power Management (PMIC)	✓
Function	Step-Up/Step-Down DC-DC Controller	Step-Up/Step-Down DC-DC Controller	✓
Output Type	Transistor Driver	Transistor Driver	✓
Topology Support	Full-Bridge, Half-Bridge, Push-Pull	Full-Bridge, Half-Bridge, Push-Pull	✓
Output Configuration	Positive, Isolation Capable	Positive, Isolation Capable	✓
Number of Outputs	2	2	✓
Voltage - Supply (Vcc/Vdd)	14V ~ 90V	14V ~ 90V	✓
Frequency - Switching	200kHz, 600kHz	200kHz, 600kHz	✓
Duty Cycle (Max)	50%	50%	✓
Control Features	Frequency Control, Soft Start	Frequency Control, Soft Start	✓
Operating Temperature	-40°C ~ 105°C (TA)	-40°C ~ 105°C (TA)	✓
Package / Case	10-WDFN Exposed Pad	10-WDFN Exposed Pad	✓
Mounting Type	Surface Mount	Surface Mount	✓
Product Status	Obsolete	Active	Substitute Available

Engineering Selection Recommendations

The LM5030SD/NOPB is the recommended substitute for the obsolete LM5030SDX. Both parts share identical electrical and mechanical specifications across all critical parameters, ensuring direct functional compatibility in existing designs.

The LM5030SD/NOPB offers additional advantages in terms of supply chain continuity. With active product status and ROHS3 compliance, this part supports modern manufacturing standards and regulatory requirements. The LM5030SDX, classified as obsolete and RoHS non-compliant, presents long-term sourcing and compliance risks.

From a compliance perspective, the LM5030SD/NOPB carries ROHS3 certification, whereas the LM5030SDX does not. Both parts maintain REACH unaffected status and share the same ECCN classification (EAR99). The moisture sensitivity level remains unchanged at MSL 1 (Unlimited) for both variants.

Frequently Asked Questions (FAQ)

Q: Can the LM5030SD/NOPB be used as a direct replacement for the LM5030SDX?

A: Yes. Both parts are parametrically equivalent across all electrical and mechanical specifications. They share identical supply voltage ranges, switching frequencies, duty cycle ratings, topology support, package configuration, and control features. No circuit modifications are required for substitution.

Q: What is the primary difference between these two parts?

A: The LM5030SDX is obsolete, while the LM5030SD/NOPB maintains active product status. The LM5030SD/NOPB also carries ROHS3 compliance certification, whereas the LM5030SDX is RoHS non-compliant. Electrical and mechanical performance are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 10-WDFN exposed pad package with identical pinout and surface mount configuration. PCB layouts and footprints are fully compatible.

Q: Does the substitution affect thermal or reliability characteristics?

A: The operating temperature range remains -40°C to 105°C for both parts. Moisture sensitivity level is unchanged at MSL 1 (Unlimited). No thermal or reliability differences exist between the two variants.

Q: What inventory considerations should be evaluated?

A: The LM5030SDX has 772 pieces in stock with obsolete status. The LM5030SD/NOPB has 3300 pieces in stock with active product status, providing superior long-term supply chain security and availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message