Texas Instruments TL750L05CLPE3

Overview

TL750L05CLPE3 from Texas Instruments is a 5-V fixed-output, low-dropout linear voltage regulator in TO-92 (LP) package, designed for battery-powered systems. It delivers up to 150 mA output current with dropout voltage ≤0.6 V at full load, reverse transient protection down to –50 V, and integrated thermal/overcurrent protection. It operates across 0°C to 125°C and supports input voltages from 6 V to 26 V - ideal for automotive body electronics and portable instrumentation.

For engineers reviewing the TL750L05CLPE3 datasheet, TL750L05CLPE3 pinout, TL750L05CLPE3 application, or TL750L05CLPE3 equivalent, key selection criteria include its 5-V ±2.5% output tolerance over temperature, 60-V load-dump immunity, ultra-low quiescent current (≤2 mA), and TO-92 mechanical compatibility with legacy through-hole power regulation designs.

Technical Context

The TL750L05CLPE3 uses a PNP pass transistor architecture enabling low dropout operation without requiring external compensation. Its internal circuitry integrates reverse-battery protection, overvoltage clamping, and thermal shutdown - all active under continuous operation without external components.

Unlike the TL751L series, TL750L05CLPE3 lacks an ENABLE pin and operates continuously when powered. Its output stability relies on a minimum 10-μF tantalum capacitor with ESR <0.4 Ω, per TI's recommended layout for 0–150 mA load range and –40°C to 125°C ambient.

Key Specifications

Pinout & Package

TL750L05CLPE3 is housed in a TO-92 (LP) package - a 3-pin, through-hole plastic case with 5.34 mm max height, compatible with standard axial lead insertion equipment and manual prototyping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM2931AZ-5.0/NOPB and TLV70033DCKR, TL750L05CLPE3 uniquely combines TO-92 form factor, 5-V output, and full automotive-grade transient protection - making it irreplaceable in legacy-replacement or safety-critical 5-V battery-regulated applications.

Availability

TL750L05CLPE3 is available at Aetrix Electronics and suitable for automotive body electronics, portable medical instrumentation, industrial sensor nodes, and legacy industrial PLC I/O modules requiring stable component supply with long-term lifecycle support.

Supply support for TL750L05CLPE3 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 and embedded processing technologies, with decades of automotive qualification expertise and broad power management portfolio.

The TL750L series was engineered specifically for battery-powered automotive and industrial systems demanding high transient immunity, low quiescent current, and ruggedized thermal performance in compact through-hole packages.

FAQ

What is the maximum input voltage rating for TL750L05CLPE3?

The TL750L05CLPE3 supports continuous input voltage up to 26 V and can withstand transient input voltages up to 60 V per ISO 7637-2 Pulse 5a. This makes it suitable for 24-V automotive systems where load-dump events occur. The device remains functional and protected within these limits without external components.

Does TL750L05CLPE3 require an external enable signal?

No, TL750L05CLPE3 does not have an ENABLE pin and operates continuously when input voltage is applied within specification. Unlike the TL751L series, it lacks enable functionality - simplifying design for always-on applications such as battery-backed real-time clocks or sensor biasing circuits.

What output capacitor is required for stable operation of TL750L05CLPE3?

TI specifies a minimum 10-μF tantalum capacitor with equivalent series resistance (ESR) less than 0.4 Ω on the output of TL750L05CLPE3. Ceramic capacitors alone are insufficient due to near-zero ESR causing instability; a hybrid approach (e.g., 10-μF tantalum + 0.1-μF ceramic) is recommended for broadband noise suppression.

Can TL750L05CLPE3 replace a standard 78L05 in existing designs?

Yes, TL750L05CLPE3 is a direct TO-92 pinout replacement for 78L05 with identical pin configuration (Input–Ground–Output), but adds critical enhancements: 60-V load-dump immunity, –50-V reverse transient protection, lower dropout (0.6 V vs. ~1.7 V), and tighter output tolerance (±2.5% vs. ±5%). No PCB changes are needed.

What is the thermal resistance (θ_JA) of TL750L05CLPE3 in its TO-92 package?

The TL750L05CLPE3 in TO-92 (LP) package has a junction-to-ambient thermal resistance (θ_JA) of 140°C/W under standard JEDEC High-K test board conditions. Derating is required above 75°C ambient to maintain TJ ≤125°C at 150 mA load; copper pour under the tab improves heat dissipation significantly.