Texas Instruments TPS72215DBVRG4

Overview

TPS72215DBVRG4 from Texas Instruments is a fixed-output 1.5-V, 50-mA low-dropout linear regulator in a 5-pin SOT-23 (DBV) package. It operates down to 1.8 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 TPS72215DBVRG4 datasheet, TPS72215DBVRG4 pinout, TPS72215DBVRG4 application, or TPS72215DBVRG4 equivalent, key selection criteria include ultra-low input voltage support (1.8 V min), minimal external capacitance requirement (0.1 µF), shutdown current <1 µA, thermal/overcurrent protection, and compatibility with space-constrained battery-powered designs.

Technical Context

The TPS72215DBVRG4 uses a PMOS pass element to achieve low dropout and enable operation below 2.0 V input. Its internal compensation stabilizes regulation across 1.8–5.5 V input and 0–50 mA load with only 0.1 µF output capacitance-eliminating need for larger, board-area-intensive capacitors.

Enable logic (EN pin) controls output with TTL-compatible thresholds (VIH = 1.4 V, VIL = 0.4 V), and integrated thermal shutdown (trip at 170°C, hysteresis 20°C) plus current limiting (~350 mA) ensure robustness during fault conditions without external circuitry.

Key Specifications

Pinout & Package

SOT-23 (DBV) package: 3.0 mm × 3.0 mm footprint, 1.45 mm max height, 5-terminal surface-mount device with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS72215DBVRG4, TPS72215DBVR offers identical performance in a different packaging configuration, while MCP1700T-1502E/TT trades higher dropout and capacitor demand for significantly lower operating current-making it suitable only for applications where battery life in deep sleep dominates over runtime under active load.

Availability

TPS72215DBVRG4 is available at Aetrix Electronics and suitable for portable communication devices, battery-powered medical sensors, and PCMCIA peripherals requiring stable component supply, long-lifecycle availability, and traceable sourcing.

Supply support for TPS72215DBVRG4 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 technologies with over 50 years of innovation in high-reliability, low-power IC design.

The TPS722xx family was engineered specifically for ultra-low-input-voltage, space-constrained portable applications-delivering regulated core power directly from two-cell battery sources without intermediate conversion stages.

FAQ

What is the minimum input voltage required for stable operation of the TPS72215DBVRG4?

The TPS72215DBVRG4 requires a minimum input voltage of 1.8 V or (V_OUT + V_DO)-whichever is greater. At 50 mA load, its 50 mV typical dropout means it regulates stably from 1.55 V input. However, per datasheet absolute minimum is 1.8 V to guarantee performance across temperature and process variation. This allows direct use of two AAA alkaline cells throughout their full discharge range.

Can the TPS72215DBVRG4 operate without an output capacitor?

No, the TPS72215DBVRG4 requires a minimum 0.1-µF ceramic capacitor on the OUT pin to GND for stability. While it eliminates ESR requirements and supports smaller capacitors than traditional LDOs, omitting the output capacitor will cause oscillation and regulation failure. The 0.1-µF value is validated across all input voltages (1.8–5.5 V) and load currents (0–50 mA).

Does the TPS72215DBVRG4 provide reverse-current protection?

Yes, the TPS72215DBVRG4 integrates a PMOS pass element with a built-in back diode that safely conducts reverse current-from OUT to IN-when input voltage falls below output voltage (e.g., during power-down or hot-swap events). This prevents backfeeding into upstream supplies and eliminates need for external reverse-blocking components in most portable designs.

What is the thermal shutdown behavior of the TPS72215DBVRG4?

The TPS72215DBVRG4 activates thermal shutdown at 170°C junction temperature and remains latched off until junction temperature falls to approximately 150°C (20°C hysteresis). Recovery is fully automatic with no external reset required. During shutdown, quiescent current remains below 1 µA, preserving battery charge while protecting the device from permanent thermal damage.

How does the EN pin function on the TPS72215DBVRG4?

The EN pin on the TPS72215DBVRG4 is an active-high enable input with VIH = 1.4 V (min) and VIL = 0.4 V (max). When pulled ≥1.4 V, the regulator powers up with typical startup time <400 µs; when pulled ≤0.4 V, output disables and ground current drops to <1 µA. EN leakage is <±0.01 µA, allowing direct MCU GPIO control without additional level-shifting or pull-up resistors.