Texas Instruments TL750L05CLPRE3

Overview

TL750L05CLPRE3 from Texas Instruments is a 5-V, 150-mA low-dropout linear voltage regulator in TO-92 (LP) package, featuring <0.6 V dropout at full load, ±2% output voltage accuracy over 0°C to 125°C, reverse-battery protection down to –50 V, and 60-V load-dump immunity-designed for battery-powered automotive and industrial control systems requiring stable low-quiescent-power regulation.

For engineers reviewing the TL750L05CLPRE3 datasheet, TL750L05CLPRE3 pinout, TL750L05CLPRE3 application, or TL750L05CLPRE3 equivalent, key selection criteria include dropout voltage under 150 mA, thermal performance in TO-92 with θJA = 140°C/W, reverse-transient robustness, and compatibility with 10-μF tantalum output capacitors per TI's stability guidelines.

Technical Context

The TL750L05CLPRE3 implements a PNP-based LDO architecture with internal current limiting, thermal shutdown, and overvoltage protection. It operates without an enable input (distinguishing it from TL751L series), delivering fixed 5-V output across 6–26 V input range while maintaining regulation during cold-crank transients.

Its protection features include reverse-battery tolerance (–50 V transient), 60-V load-dump survival, and internal short-circuit current limiting. Quiescent current remains ≤2 mA across full temperature and load range, enabling use in always-on subsystems.

Key Specifications

Pinout & Package

TL750L05CLPRE3 uses the TO-92 (LP) package - a 3-pin through-hole plastic case with standard lead spacing (0.1 inch), optimized for cost-sensitive, low-to-medium power applications where PCB real estate and thermal mass permit natural convection cooling.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-dropout linear regulator applications.

Compared with TL750L05CD and LM2931AZ-5.0, TL750L05CLPRE3 uniquely combines TO-92 form factor with automotive-grade transient robustness - making it the only option among the three qualified for direct battery-rail connection in harsh environments without supplemental protection.

Availability

TL750L05CLPRE3 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart meter auxiliary power, and portable medical diagnostics requiring stable component supply with long-term lifecycle support.

Supply support for TL750L05CLPRE3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of automotive and industrial qualification expertise.

The TL750L series was designed specifically for battery-powered systems needing rugged, low-quiescent LDO regulation - emphasizing transient immunity, thermal reliability, and minimal external component count in cost-constrained applications.

FAQ

What is the maximum continuous input voltage for TL750L05CLPRE3?

The TL750L05CLPRE3 supports a continuous input voltage up to 26 V, as specified in its Absolute Maximum Ratings. This rating applies across the full operating junction temperature range (0°C to 125°C) and enables use in 24-V industrial systems and 12-V automotive applications with headroom for nominal rail variations. Transient input voltage tolerance extends to 60 V for load-dump events.

Does TL750L05CLPRE3 include an enable pin?

No, TL750L05CLPRE3 does not include an enable pin. It belongs to the TL750L series, which lacks the ENABLE input found in the TL751L family. TL750L05CLPRE3 operates continuously when input voltage is within specification; power sequencing must be managed externally via input rail control or upstream switch.

What output capacitor is required for stable operation of TL750L05CLPRE3?

TI specifies a minimum 10-μF tantalum capacitor with ESR < 0.4 Ω on the output of TL750L05CLPRE3 to ensure loop stability across temperature and load. Ceramic capacitors alone are insufficient due to their near-zero ESR; a hybrid approach (e.g., 10-μF tantalum + 0.1-μF ceramic) is recommended for high-frequency noise suppression while maintaining phase margin.

Can TL750L05CLPRE3 replace TL750L05CLP in existing designs?

Yes, TL750L05CLPRE3 is a direct tape-and-reel variant of TL750L05CLP - identical electrically and mechanically (both TO-92/LP package, same pinout, same marking "750L05C"). The "RE3" suffix denotes RoHS-compliant Sn lead finish and large-reel packaging (2000 pcs), with no functional or thermal differences versus the bulk-packaged TL750L05CLP.

What is the thermal performance of TL750L05CLPRE3 on a standard FR-4 PCB?

On a high-thermal-conductivity FR-4 board per JESD 51-7, TL750L05CLPRE3 exhibits θJA = 140°C/W. At ambient temperature of 85°C and 150 mA output current (0.6 V dropout → 90 mW dissipation), junction temperature rises to ~97.6°C - well within the 125°C maximum operating limit. For higher power, adding copper pour or thermal vias is advised.