Texas Instruments TPS76050DBVR

Overview

TPS76050DBVR from Texas Instruments is a 50-mA, fixed 5.0-V low-dropout linear regulator in SOT-23-5 package, featuring 120 mV typical dropout at full load, <1 µA quiescent current in shutdown, thermal shutdown protection, and operation from –40°C to 125°C junction temperature. It serves as a precision voltage source for battery-powered microcontrollers, sensors, and portable instrumentation requiring stable 5 V rail with minimal input overhead.

For engineers reviewing the TPS76050DBVR datasheet, TPS76050DBVR pinout, TPS76050DBVR application, or TPS76050DBVR equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in ultra-low-power systems, and two confirmed alternative parts with documented functional and application-level differences.

Technical Context

The TPS76050DBVR employs a BiCMOS process to achieve low quiescent current and tight output regulation across temperature and load. Its internal architecture includes current limiting, thermal sensing, and enable-controlled pass transistor gating - all integrated into a single-die solution without external compensation components.

It operates with a minimum input voltage of 5.2 V (per recommended conditions) and supports output capacitance from 2.2 µF to ≥2.5 µF with ESR between 0.1 Ω and 20 Ω. The EN pin provides logic-level control (VIH ≥ 2 V, VIL ≤ 0.8 V), and the NC pin (Pin 4) has no internal connection.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm body, tape-and-reel (3000 pcs/reel), RoHS-compliant, NIPDAU lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPS76050DBVR, TPS76350DBVR trades enable control for slightly lower light-load quiescent current, while MCP1700T-5002E/TT offers higher output current and ultra-low I_Q but omits thermal/current protection and requires external EN implementation - making TPS76050DBVR optimal for protected, enable-driven, battery-constrained designs.

Availability

TPS76050DBVR is available at Aetrix Electronics and suitable for battery-powered wearables, industrial sensor nodes, and portable medical diagnostics requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS76050DBVR 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 power management ICs, with decades of expertise in high-reliability, low-power regulator design.

The TPS760xx family was engineered specifically for battery-powered systems demanding ultra-low quiescent current, robust thermal behavior, and space-constrained packaging - targeting portable instrumentation, medical devices, and remote sensing.

FAQ

What is the minimum input voltage required for stable 5 V output from the TPS76050DBVR?

The TPS76050DBVR requires a minimum input voltage of 5.2 V under recommended operating conditions to maintain regulation at full 50 mA load. This accounts for its 120 mV typical dropout voltage. At lighter loads (e.g., 1 mA), dropout drops to 15 mV, allowing operation down to ~5.015 V - but 5.2 V is the design-minimum specified for reliable performance across temperature and process variation.

Does the TPS76050DBVR require an external capacitor on the EN pin?

No, the TPS76050DBVR does not require an external capacitor on the EN pin. The enable input is CMOS-compatible with low input current (<5 µA at VI), and TI's datasheet specifies only that EN must not be left floating - it should be tied directly to IN (for always-on operation) or driven by a clean logic signal. Adding capacitance risks slow enable/disable transitions and is not recommended unless intentional filtering is needed for noisy environments.

Can the NC pin (Pin 4) of the TPS76050DBVR be grounded or left floating on the PCB?

The NC pin (Pin 4) of the TPS76050DBVR has no internal connection and must remain unconnected - neither grounded nor routed. TI's datasheet explicitly states "NC – No internal connection", and the package outline confirms it is an unused bond pad. Grounding or routing this pin may cause unintended parasitic coupling or violate JEDEC layout guidelines for SOT-23 packages.

What output capacitor types and values are validated for use with the TPS76050DBVR?

The TPS76050DBVR is validated with 2.2 µF solid tantalum, aluminum electrolytic, or multilayer ceramic capacitors (MLCC), provided ESR remains between 0.1 Ω and 20 Ω. MLCCs must be ≥2.5 µF over the full –40°C to 125°C range. TI's typical application shows 2.2 µF, and test data confirms stability across this range - using undersized or out-of-spec ESR capacitors risks oscillation or poor transient response.

How does thermal shutdown behave on the TPS76050DBVR during sustained overload?

When the TPS76050DBVR junction temperature exceeds ~160°C, thermal shutdown activates and disables the output. The device remains latched off until the die cools to ~155°C, at which point regulation resumes automatically. This hysteresis prevents cycling during marginal overheating. During shutdown, quiescent current stays below 1 µA, minimizing further heating - a key safety feature for enclosed or high-ambient deployments.