TPS65148RHBT Equivalent & Substitute Parts

Part Overview

The TPS65148RHBT is a TFT LCD voltage regulator IC manufactured by Texas Instruments, designed as a 2-output converter for TFT LCD applications. This device operates with input voltage range of 2.5V to 6V and provides output voltages between 7V and 18V in a 32-VQFN (5x5) surface mount package.

The TPS65148RHBT is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute components is essential for system redesign, production continuity, and long-term supply chain management.

Substiute Parts

TPS65148RHBT

Texas InstrumentsIn Stock: 1109TPS65148RHBT Datasheet

Current PartRFQ

TPS65149RSHR

Texas InstrumentsIn Stock: 5368TPS65149RSHR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS65148RHBT is determined by the following critical parameters:

• Manufacturer: Texas Instruments (same manufacturer ensures design continuity and support)
• Category: Power Management (PMIC) for LCD applications
• Input Voltage Range: 2.5V ~ 6V (must support the same supply voltage)
• Output Configuration: 2 outputs with voltage range 7V ~ 18V
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 85°C
• Compliance Standards: ROHS3 Compliant, REACH Unaffected

The substitute part TPS65149RSHR is identified as the manufacturer-recommended equivalent. While it operates within compatible voltage specifications and maintains the same compliance certifications, design integration differences exist due to package and output configuration variations.

Parameter Comparison

Engineering Selection Recommendations

The TPS65149RSHR is the manufacturer-recommended substitute for the obsolete TPS65148RHBT. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs.

Key considerations for selection:

• Active Product Status: The TPS65149RSHR is actively manufactured and supported by Texas Instruments, providing long-term availability and supply chain stability compared to the obsolete TPS65148RHBT.
• Package Footprint Change: The substitute uses a larger 56-VQFN (7x7) package versus the original 32-VQFN (5x5), requiring PCB layout redesign and verification of board space availability.
• Input Voltage Specification: The TPS65149RSHR minimum input voltage is 3V (versus 2.5V for the original), which may impact designs operating at lower supply voltages.
• Moisture Sensitivity: The substitute has MSL 3 (168 hours) versus MSL 2 (1 year), requiring adjusted handling and storage protocols during manufacturing.

Frequently Asked Questions (FAQ)

Q: Can the TPS65149RSHR directly replace the TPS65148RHBT without PCB modifications?

A: No. The TPS65149RSHR uses a 56-VQFN (7x7) package compared to the original 32-VQFN (5x5), requiring PCB layout redesign, trace routing adjustments, and footprint verification before implementation.

Q: What is the minimum input voltage difference between these parts?

A: The TPS65148RHBT supports input voltage down to 2.5V, while the TPS65149RSHR minimum is 3V. Systems designed to operate below 3V input voltage cannot use the substitute without additional power conditioning.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the TPS65148RHBT and TPS65149RSHR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: How does the moisture sensitivity level difference affect manufacturing?

A: The TPS65149RSHR has MSL 3 (168-hour floor life) versus MSL 2 (1-year floor life) for the original part. This requires stricter moisture control during storage, handling, and assembly processes to prevent component degradation.

Q: Is the TPS65149RSHR suitable for TFT LCD applications?

A: The TPS65149RSHR is specified for LCD Monitor PMIC applications. Functional compatibility with TFT LCD systems requires verification of output voltage configuration, current delivery capability, and control interface alignment with the original design.