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LM25575MHX Equivalent & Substitute Parts
Part Overview
The LM25575MHX is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for step-down voltage conversion with positive adjustable output. It delivers 1.5A output current across an input voltage range of 6V to 42V, with adjustable output from 1.225V to 40V. The device operates at switching frequencies between 50kHz and 1MHz and is housed in a 16-PowerTSSOP surface mount package.
The LM25575MHX carries an obsolete product status. Locating equivalent or substitute components is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing support and current compliance certifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Function | Step-Down (Buck) |
| Output Configuration | Positive Adjustable |
| Number of Outputs | 1 |
| Voltage - Input Range | 6V to 42V |
| Voltage - Output Range | 1.225V to 40V |
| Current - Output | 1.5A |
| Frequency - Switching | 50kHz to 1MHz |
| Operating Temperature | -40°C to 125°C (TJ) |
| Package / Case | 16-PowerTSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Synchronous Rectifier | No |
Substitute Part Grouping Explanation
Substitution of the LM25575MHX is determined by strict equivalence across the following critical parameters:
- Topology & Function: Buck (step-down) converter with positive adjustable output configuration
- Electrical Specifications: Input voltage range 6V to 42V, output range 1.225V to 40V, 1.5A output current capacity
- Switching Frequency: 50kHz to 1MHz operating range
- Package & Pinout: 16-PowerTSSOP surface mount package with identical pin configuration
- Operating Temperature Range: -40°C to 125°C junction temperature
- Synchronous Rectifier Configuration: Non-synchronous design
The LM25575MHX/NOPB is a direct manufacturer equivalent that maintains identical electrical and mechanical specifications while offering improved product status and compliance certifications.
Parameter Comparison
| Parameter | LM25575MHX | LM25575MHX/NOPB |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Base Product Number | LM25575 | LM25575 |
| Series | SIMPLE SWITCHER® | SIMPLE SWITCHER® |
| Function | Step-Down | Step-Down |
| Output Configuration | Positive | Positive |
| Output Type | Adjustable | Adjustable |
| Number of Outputs | 1 | 1 |
| Voltage - Input (Min) | 6V | 6V |
| Voltage - Input (Max) | 42V | 42V |
| Voltage - Output (Min/Fixed) | 1.225V | 1.225V |
| Voltage - Output (Max) | 40V | 40V |
| Current - Output | 1.5A | 1.5A |
| Frequency - Switching | 50kHz ~ 1MHz | 50kHz ~ 1MHz |
| Synchronous Rectifier | No | No |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 16-PowerTSSOP (0.173", 4.40mm Width) | 16-PowerTSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 16-HTSSOP | 16-HTSSOP |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8542.39.0001 | 8542.39.0001 |
Engineering Selection Recommendations
The LM25575MHX/NOPB is the direct substitute for the LM25575MHX. Both components share identical electrical specifications, package configuration, and functional characteristics. The primary distinction is product status and compliance certification.
The LM25575MHX carries obsolete status with RoHS non-compliant certification. The LM25575MHX/NOPB maintains active product status with ROHS3 compliance, making it the preferred selection for new designs and ongoing production requirements. The /NOPB suffix indicates lead-free manufacturing and compliance with current environmental regulations.
For applications requiring the LM25575MHX electrical and mechanical specifications, the LM25575MHX/NOPB provides equivalent performance with enhanced supply chain availability and regulatory compliance.
Frequently Asked Questions (FAQ)
Q: Are the LM25575MHX and LM25575MHX/NOPB electrically identical?
A: Yes. Both components deliver identical electrical performance across all specified parameters: input voltage range (6V to 42V), adjustable output range (1.225V to 40V), 1.5A output current, and switching frequency (50kHz to 1MHz).
Q: What does the /NOPB suffix indicate?
A: The /NOPB suffix designates a lead-free, RoHS3-compliant version manufactured without lead-based solder. This reflects current environmental and regulatory standards for electronic component manufacturing.
Q: Can I use LM25575MHX/NOPB as a direct replacement in existing designs?
A: Yes. The LM25575MHX/NOPB maintains identical pinout, package dimensions (16-PowerTSSOP, 0.173" × 4.40mm width), and electrical specifications. No circuit modifications or PCB redesign is required.
Q: Why is the LM25575MHX marked as obsolete?
A: Obsolete status indicates that Texas Instruments has discontinued active manufacturing and support for this specific part number variant. The LM25575MHX/NOPB represents the current active equivalent.
Q: Are there inventory differences between these parts?
A: Yes. The LM25575MHX shows 8,600 units in stock, while the LM25575MHX/NOPB shows 27,800 units. The higher inventory of the active part number reflects ongoing production and supply chain support.
Q: What is the Moisture Sensitivity Level (MSL) for these components?
A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.
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