Texas Instruments TPS72201DBVR

Overview

TPS72201DBVR from Texas Instruments is an adjustable low-dropout linear regulator (LDO) in a 5-pin SOT-23 package, delivering up to 50 mA output current with 1.22 V to 2.5 V programmable output voltage, 50 mV typical dropout at full load, and operation down to 1.8 V input voltage. It enables compact, battery-powered power management for microcontrollers and DSPs requiring stable low-voltage rails.

For engineers reviewing the TPS72201DBVR datasheet, TPS72201DBVR pinout, TPS72201DBVR application, or TPS72201DBVR equivalent, key selection criteria include its 0.1-µF ceramic capacitor stability, <1 µA shutdown quiescent current, thermal/overcurrent protection, and compatibility with two AAA battery inputs (1.8–3.0 V).

Technical Context

The TPS72201DBVR uses a PMOS pass element enabling ultra-low dropout and operation from 1.8 V input-critical for dual-battery systems. Its internal compensation eliminates need for ≥1-µF output capacitors, stabilizing feedback across 1.8–5.5 V input and 0–50 mA load ranges.

Enable (EN) control provides logic-level shutdown (<0.4 V low, >1.4 V high), reducing ground current to ≤1 µA. Built-in thermal shutdown (170°C trip, 20°C hysteresis) and current limiting (~350 mA) protect against fault conditions without external circuitry.

Key Specifications

Pinout & Package

SOT-23 (DBV) package: 3.0 mm × 3.0 mm × 1.45 mm body, 5-terminal surface-mount, JEDEC MO-178 compliant, RoHS-compliant NiPdAu lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS72215DBVR, the TPS72201DBVR offers design flexibility via external feedback but requires two resistors; versus MCP1700T-3302E/MB, it trades higher IQ for adjustability, EN control, and lower dropout-making it optimal for multi-rail, battery-sensitive systems.

Availability

TPS72201DBVR is available at Aetrix Electronics and suitable for portable communication devices, battery-powered medical instruments, and PCMCIA peripheral designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for TPS72201DBVR 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 and broad automotive/industrial qualification.

The TPS722xx product line targets ultra-low-input-voltage, capacitor-minimized power regulation for portable and battery-constrained systems-designed specifically to replace legacy regulators requiring ≥2.5 V input or ≥1 µF output capacitance.

FAQ

What is the minimum input voltage required for TPS72201DBVR to regulate a 1.8 V output?

The minimum input voltage for TPS72201DBVR to regulate 1.8 V is determined by dropout: at 50 mA load, typical V_DO is 50 mV, so VI(min) = 1.8 V + 0.05 V = 1.85 V. Per datasheet Figure 15, the absolute minimum VI is 1.8 V, but stable regulation at full load requires ≥1.85 V. The TPS72201DBVR meets this with two AAA batteries (1.8–3.0 V range).

Can TPS72201DBVR operate without an external feedback resistor network?

No-TPS72201DBVR is the adjustable variant and requires an external resistor divider connected between OUT, FB (pin 4), and GND to set output voltage per VO = 1.225 V × (1 + R1/R2). Fixed-output versions like TPS72215DBVR omit the FB function and do not require external resistors.

What is the maximum allowable junction temperature for continuous operation of TPS72201DBVR?

The TPS72201DBVR is specified for continuous operation up to TJ = 125°C. Its absolute maximum junction temperature is 150°C, but thermal shutdown activates at 170°C to prevent damage. Derating is required above TA = 25°C per the dissipation rating table-e.g., at TA = 70°C, max power is 212 mW on a low-K board.

Does TPS72201DBVR support reverse current protection during input brownout?

Yes-the TPS72201DBVR integrates a PMOS pass transistor with a built-in back diode that safely conducts reverse current from OUT to IN when VI drops below VO (e.g., during battery swap or input collapse). This prevents output bus collapse and protects downstream circuitry without external diodes.

What is the recommended output capacitor type and value for TPS72201DBVR stability?

A 0.1 µF X7R or X5R ceramic capacitor is mandatory for stability per TI's datasheet. Larger values (e.g., 1–10 µF) improve transient response and PSRR but are not required. Tantalum or electrolytic capacitors are not recommended due to ESR sensitivity and potential instability.