Texas Instruments TPS73201DRBRG4

Overview

TPS73201DRBRG4 from Texas Instruments is a capacitor-free, NMOS-based 250mA low-dropout (LDO) voltage regulator with reverse current protection and an adjustable output (1.2V–5.5V). It operates from 1.7V to 5.5V input, delivers ultra-low 40mV typical dropout at full load, achieves ±0.5% initial accuracy, and provides 30μVRMS output noise (10kHz–100kHz) - making it suitable for powering noise-sensitive VCOs in portable RF systems.

For engineers reviewing the TPS73201DRBRG4 datasheet, TPS73201DRBRG4 pinout, TPS73201DRBRG4 application, or TPS73201DRBRG4 equivalent, key selection criteria include its no-output-capacitor stability, NMOS reverse leakage performance (<10µA), thermal shutdown behavior (160°C trip), enable-controlled shutdown (<1µA IQ), and compatibility with high-precision point-of-load regulation for FPGAs and DSPs.

Technical Context

The TPS73201DRBRG4 uses an NMOS pass transistor driven by an integrated 4MHz charge pump to maintain gate drive above VOUT - enabling stable operation without output capacitance and delivering <150mV dropout across temperature and load. Its servo-loop architecture includes a precision 1.204V bandgap reference and error amplifier with feedback via FB/NR pins.

Unlike PNP or PMOS LDOs, this topology ensures near-constant ground pin current (400–950µA) over 0–250mA load and provides high reverse blockage: reverse leakage is limited to ≤10µA when EN is low and VIN ≤ VOUT. The device integrates foldback current limiting (250–600mA) and thermal shutdown (160°C/140°C hysteresis).

Key Specifications

Pinout & Package

VSON-8 (DRB) package: 3mm × 3mm body with exposed thermal pad (connected to GND), optimized for high-power-density layouts and thermal performance (R_θJA = 49.4°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS73201DBVR, the TPS73201DRBRG4 offers 3.7× lower junction-to-ambient thermal resistance and superior reverse leakage control; versus MCP1826T-2502E/DB, it provides adjustability, no-capacitor operation, and 2.5× lower dropout - critical for battery runtime and noise-sensitive RF loads.

Availability

TPS73201DRBRG4 is available at Aetrix Electronics and suitable for portable medical sensors, FPGA core regulation, VCO power supplies, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TPS73201DRBRG4 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 LDO design heritage and automotive-grade reliability validation.

The TPS732 product line targets high-precision, low-noise, capacitor-free regulation for portable, RF, and industrial applications - emphasizing dropout minimization, reverse current blocking, and thermal robustness in compact packages.

FAQ

What is the maximum output current capability of the TPS73201DRBRG4?

The TPS73201DRBRG4 delivers up to 250mA continuous output current under recommended operating conditions (T_J ≤ 125°C, adequate PCB copper). Its foldback current limit activates at 250–600mA depending on V_OUT, protecting the device during short-circuit events. Derating is required above 85°C ambient due to thermal limits - full 250mA is sustainable with ≥1in² 2-oz copper on the DRB package's thermal pad.

Does the TPS73201DRBRG4 require an output capacitor for stability?

No, the TPS73201DRBRG4 is explicitly designed for stable operation with zero output capacitance - a key differentiator from most LDOs. This is enabled by its NMOS pass transistor topology and internal compensation. Optional capacitors (1nF–100µF) may be added to improve transient response or reduce noise, but are never required for loop stability per TI's SBVS037S datasheet.

How does reverse current protection work in the TPS73201DRBRG4?

The TPS73201DRBRG4 uses an NMOS pass device with inherent reverse conduction blocking. When EN is low or V_IN falls below V_OUT, reverse leakage is limited to ≤10µA (typical) - verified across –40°C to 125°C. This prevents backfeeding from downstream circuits into the input rail, critical in battery backup and multi-supply systems where uncontrolled current flow could damage sources or drain batteries.

What is the purpose of the FB pin on the TPS73201DRBRG4?

The FB (feedback) pin on the TPS73201DRBRG4 sets the output voltage in adjustable configurations: V_OUT = 1.204V × (1 + R1/R2), where R1 connects FB to OUT and R2 connects FB to GND. For the TPS73201DRBRG4, R1 + R2 = 80kΩ is recommended for optimal accuracy. Unlike fixed-output variants, this part has no NR pin - instead, a feedback capacitor (C_FB) from OUT to FB reduces noise and improves load transient response.

Can the TPS73201DRBRG4 be used in automotive applications?

The TPS73201DRBRG4 is qualified for industrial temperature range (–40°C to 125°C) and features thermal shutdown (160°C trip), foldback current limiting, and robust ESD protection (±2000V HBM). While not AEC-Q200 qualified, it has been deployed in non-safety-critical automotive subsystems like infotainment USB hubs and telematics GPS modules - subject to customer qualification per ISO/TS 16949 processes and board-level thermal validation.