Texas Instruments TPS72216DBVRG4

Overview

TPS72216DBVRG4 from Texas Instruments is a 1.6-V fixed-output, 50-mA low-dropout linear regulator in a 5-pin SOT-23 (DBV) package. It operates from 1.8 V to 5.5 V input, delivers 50 mV typical dropout at full load, supports 0.1-µF ceramic output capacitance, and draws only 85 µA quiescent current-enabling direct two-AAA-battery operation in portable microcontroller power rails.

For engineers reviewing the TPS72216DBVRG4 datasheet, TPS72216DBVRG4 pinout, TPS72216DBVRG4 application, or TPS72216DBVRG4 equivalent, key selection criteria include its 1.6-V output precision (±3% over load/temperature), ultra-low input voltage capability, shutdown current <1 µA, thermal/overcurrent protection, and compatibility with space-constrained battery-powered designs requiring stable low-voltage bias.

Technical Context

The TPS72216DBVRG4 uses a PMOS pass element enabling operation down to 1.8 V input while maintaining regulation at 1.6 V output. Its internal compensation stabilizes the feedback loop across 1.8–5.5 V input and 0–50 mA load with only 0.1-µF output capacitance-eliminating need for larger electrolytic or tantalum capacitors.

Enable (EN) control provides logic-level shutdown with <1 µA standby current. Built-in thermal shutdown (trip at 170°C, hysteresis 20°C) and current limiting (~350 mA) protect against fault conditions without external circuitry.

Key Specifications

Pinout & Package

TPS72216DBVRG4 is housed in a 5-pin SOT-23 (DBV) package measuring 3.0 mm × 3.0 mm × 1.45 mm max height, optimized for high-density portable PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS72216DBVR and TPS72215DBVR, the TPS72216DBVRG4 offers identical regulation performance and protection features but carries TI's G4 suffix denoting enhanced moisture sensitivity handling (MSL Level-1) and specific tape-and-reel packaging-critical for high-reliability automated assembly environments.

Availability

TPS72216DBVRG4 is available at Aetrix Electronics and suitable for portable communication devices, battery-powered medical instruments, and PCMCIA card power management requiring stable component supply and long-term lifecycle support.

Supply support for TPS72216DBVRG4 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 LDO design expertise.

The TPS722xx family was engineered specifically for ultra-low-input-voltage, space-constrained portable applications-delivering regulated 1.5/1.6/1.8-V rails from two AAA batteries or single-cell Li-ion sources.

FAQ

What is the minimum input voltage required for stable operation of the TPS72216DBVRG4?

The TPS72216DBVRG4 requires a minimum input voltage of 1.8 V or (VO + VDO_max), whichever is greater. With its 50-mV typical dropout at 50 mA, it maintains regulation down to 1.65 V input-enabling reliable operation across the full discharge curve of two AAA batteries (1.8 V to 3.0 V).

Does the TPS72216DBVRG4 require an external feedback resistor network?

No, the TPS72216DBVRG4 is a fixed-output regulator with internally trimmed 1.6-V reference. Pin 4 is marked NC (no connect) and must remain unconnected-unlike the adjustable TPS72201, which uses that pin as FB. No external resistors are needed for voltage setting.

Can the TPS72216DBVRG4 safely handle reverse current flow from output to input?

Yes, the TPS72216DBVRG4 integrates a PMOS pass element with a built-in back diode that safely conducts reverse current when VIN falls below VOUT (e.g., during power-down). This protects upstream circuitry without requiring external diodes-though sustained reverse voltage may warrant external current limiting.

What is the thermal shutdown behavior of the TPS72216DBVRG4?

The TPS72216DBVRG4 activates thermal shutdown at 170°C junction temperature and remains off until junction temperature drops to ~150°C (20°C hysteresis). Recovery is fully automatic-no reset or enable toggle required-ensuring robust protection during transient overload or poor heatsinking conditions.

Is the TPS72216DBVRG4 compatible with 0.1-µF ceramic output capacitors from multiple vendors?

Yes, the TPS72216DBVRG4's internal compensation is validated for stability with any 0.1-µF X5R or X7R ceramic capacitor (10% tolerance or better), regardless of vendor. TI's datasheet confirms stability across voltage, temperature, and load with this minimum value-eliminating vendor-specific qualification effort.