Texas Instruments TPS76050DBVRG4

Overview

TPS76050DBVRG4 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 shutdown quiescent current, thermal shutdown protection, and operation across –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 TPS76050DBVRG4 datasheet, TPS76050DBVRG4 pinout, TPS76050DBVRG4 application, or TPS76050DBVRG4 equivalent, key selection criteria include dropout voltage at 50 mA, output voltage accuracy over temperature and load, enable logic thresholds, thermal protection behavior, and compatibility with 2.2 µF output capacitors having 0.1–20 Ω ESR.

Technical Context

The TPS76050DBVRG4 uses a BiCMOS process to achieve ultra-low quiescent current (<1 µA in shutdown, ~100 µA at 1 mA load) while maintaining tight output regulation (±1% initial accuracy, ±2% over temperature and line). Its internal architecture integrates current limiting, thermal shutdown (trip at 160°C, hysteresis ~5°C), and an enable-controlled pass transistor with built-in reverse-current diode.

It operates with input voltages from 5.2 V to 16 V, requires only a 2.2 µF output capacitor (ESR 0.1–20 Ω), and delivers 5.0 V ±1% at 50 mA with 63 dB ripple rejection at 1 kHz. The EN pin accepts TTL/CMOS-compatible logic levels (VIH ≥ 2 V, VIL ≤ 0.8 V) and draws <5 µA when high.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm body, surface-mount, 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 TPS76050DBVRG4, the TPS76050DBVR offers identical performance with legacy marking, while the MCP1700T-5002E/TT trades ultra-low IQ and tight regulation for higher output current - making it suitable only when load exceeds 50 mA or cost-driven SOT-23-3 compatibility is mandatory.

Availability

TPS76050DBVRG4 is available at Aetrix Electronics and suitable for portable medical sensors, industrial telemetry nodes, wearable fitness trackers, smart building occupancy detectors, and battery-backed real-time clocks requiring stable component supply with long-term manufacturability.

Supply support for TPS76050DBVRG4 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 ICs for mission-critical applications.

The TPS760xx family was designed specifically for battery-powered systems demanding ultra-low quiescent current, robust thermal behavior, and small-footprint fixed-output regulation - targeting portable instrumentation, medical devices, and remote sensing nodes.

FAQ

What is the minimum input voltage required for stable 5 V output from the TPS76050DBVRG4?

The TPS76050DBVRG4 requires a minimum input voltage of 5.2 V under recommended operating conditions to maintain regulation at full 50 mA load. At lighter loads (e.g., 1 mA), dropout drops to 15 mV, allowing operation from as low as 5.015 V. Input below 5.2 V risks output collapse during peak current demand, especially at elevated temperatures.

Can the TPS76050DBVRG4 be used without the enable (EN) pin connected?

Yes, but EN must not be left floating. To ensure continuous operation, connect EN directly to IN. Leaving EN unconnected risks erratic startup or unintended shutdown due to noise coupling or leakage paths. The TPS76050DBVRG4 draws <1 µA when EN is grounded, enabling true zero-power standby when externally controlled.

What output capacitor types and values are validated for use with the TPS76050DBVRG4?

The TPS76050DBVRG4 requires a minimum 2.2 µF output capacitor with ESR between 0.1 Ω and 20 Ω. Validated types include solid tantalum (e.g., Kemet T491), aluminum electrolytic, and multilayer ceramic capacitors (MLCCs ≥2.5 µF over full temperature range). A 2.2 µF X7R MLCC is commonly used, but verify capacitance retention at –40°C and 85°C per manufacturer datasheet.

Does the TPS76050DBVRG4 provide reverse-current protection?

No, the TPS76050DBVRG4 does not block reverse current. Its internal pass transistor includes a parasitic body diode from OUT to IN, allowing up to 100 mA reverse conduction if OUT exceeds IN by >0.3 V. For bidirectional isolation, add an external Schottky diode in series with IN or use a dedicated reverse-protection IC upstream of the TPS76050DBVRG4.

How does thermal shutdown behave on the TPS76050DBVRG4 during sustained overload?

When junction temperature exceeds 160°C, the TPS76050DBVRG4 shuts down output and reduces quiescent current to <1 µA. It remains latched off until temperature falls to ~155°C, then resumes normal regulation automatically. This hysteresis prevents thermal oscillation. During recovery, output voltage ramps smoothly without overshoot, preserving connected load integrity.