Texas Instruments TL750L05CLPR

Overview

TL750L05CLPR from Texas Instruments is a fixed-output 5-V low-dropout linear voltage regulator in TO-92 (LP) package, delivering up to 150 mA with dropout voltage ≤0.6 V at full load, reverse transient protection down to –50 V, and internal thermal/overcurrent protection. It serves as a primary power supply for battery-powered microcontroller peripherals, sensor interfaces, and standby circuits requiring stable 5-V rail under varying input conditions.

For engineers reviewing the TL750L05CLPR datasheet, TL750L05CLPR pinout, TL750L05CLPR application, or TL750L05CLPR equivalent, key selection criteria include dropout performance at 150 mA, quiescent current <2 mA across 0–125°C, reverse-battery tolerance, and TO-92 thermal resistance (θ_JA = 140°C/W).

Technical Context

The TL750L05CLPR implements a PNP pass transistor architecture enabling ultra-low dropout operation without external compensation. Its internal circuitry integrates reverse-battery protection, overvoltage clamping, and thermal shutdown-designed specifically for automotive and industrial battery systems where load-dump transients (up to +60 V) and cold-crank conditions occur.

Unlike enable-capable TL751L variants, TL750L05CLPR operates continuously when powered; it lacks an ENABLE pin and relies on input voltage control for sequencing. The device requires only 0.1-μF input and 10-μF output capacitors with ESR <0.4 Ω for stability across –40°C to +125°C.

Key Specifications

Pinout & Package

TL750L05CLPR uses the TO-92 (LP) package - a 3-pin through-hole plastic case with standard lead spacing (0.1" pitch), optimized for manual assembly and low-cost PCBs. Pin 1 is INPUT, Pin 2 is COMMON (GND), Pin 3 is OUTPUT - verified per TI SLVS017U top-view diagram and ordering table.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL750L05CD and LM2931AZ-5.0, TL750L05CLPR uniquely combines TO-92 manufacturability, full automotive-grade transient robustness, and 150 mA output in a single low-cost package-making it optimal for cost-sensitive, through-hole assembled automotive and industrial controls.

Availability

TL750L05CLPR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, portable medical devices, and smart meter auxiliary rails requiring stable component supply with guaranteed long-term availability.

Supply support for TL750L05CLPR 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 expertise in power management IC design.

The TL750L series was engineered for battery-powered systems demanding high reliability under harsh electrical conditions-including automotive, industrial, and medical applications where reverse polarity, load dump, and wide temperature operation are critical.

FAQ

What is the maximum input voltage rating for TL750L05CLPR?

The TL750L05CLPR has a continuous input voltage rating of 26 V and a transient input voltage rating of +60 V (per ISO 7637-2 Pulse 5a). This allows safe operation in 12-V automotive systems during load-dump events. Exceeding 26 V continuously may trigger overvoltage protection or degrade reliability.

Does TL750L05CLPR include an enable pin?

No, TL750L05CLPR does not have an ENABLE pin. It is a fixed-output, always-on LDO. For enable functionality, consider the TL751L05CLPR variant, which adds TTL/CMOS-compatible ENABLE control and reduces quiescent current to ≤500 μA when disabled.

What output capacitor is required for stable operation of TL750L05CLPR?

TI specifies a 10-μF tantalum capacitor with ESR <0.4 Ω on the output of TL750L05CLPR. Ceramic capacitors are not recommended unless ESR is actively added, as low-ESR ceramics can cause instability. The input requires a minimum 0.1-μF ceramic capacitor.

Can TL750L05CLPR replace a 78L05 in existing designs?

TL750L05CLPR can replace 78L05 in many cases due to identical TO-92 pinout (INPUT-COMMON-OUTPUT), but offers superior performance: lower dropout (0.6 V vs. 1.7 V), reverse transient protection (–50 V), and 60-V load-dump immunity. Verify input voltage headroom and thermal margin, as TL750L05CLPR draws slightly higher quiescent current at light loads.

What is the operating junction temperature range for TL750L05CLPR?

The TL750L05CLPR is rated for operating virtual junction temperature from 0°C to 125°C. Its TO-92 package has θ_JA = 140°C/W, so at 150 mA output and 25°C ambient, junction temperature rises ~21°C-well within safe limits. Derate output current if ambient exceeds 85°C or PCB copper area is minimal.