Texas Instruments TPS73527DRVT

Overview

TPS73527DRVT from Texas Instruments is a 2.7-V fixed-output, 500-mA low-dropout linear regulator with enable (EN), low 45-μA quiescent current, 13.2-μV_RMS output noise, and 68-dB PSRR at 1 kHz. It operates from 2.7 V to 6.5 V input and delivers stable voltage for RF-sensitive analog circuits in IP network cameras and macro base stations.

For engineers reviewing the TPS73527DRVT datasheet, TPS73527DRVT pinout, TPS73527DRVT application, or TPS73527DRVT equivalent, key selection criteria include dropout voltage (280 mV @ 500 mA), ceramic-capacitor stability (2.2-μF min), thermal shutdown (165°C), UVLO (2.2 V typ), and WSON-6 package compatibility with high-density PCB layouts.

Technical Context

The TPS73527DRVT uses a PMOS pass transistor architecture enabling ultra-low dropout (280 mV @ 500 mA) and high PSRR (68 dB @ 1 kHz) while maintaining 45-μA ground current. Its internal 1.208-V bandgap reference and precision feedback loop achieve ±1% DC accuracy over load, line, and temperature for V_OUT > 2.2 V.

Fixed-output versions like TPS73527DRVT integrate a dedicated NR (noise reduction) pin tied to an internal bandgap node; adding a 10-nF feed-forward capacitor reduces output noise to 13.2 μV_RMS and improves PSRR without compromising 45-μs startup time. The device includes thermal shutdown (165°C trip), current limiting (~1.17 A), and undervoltage lockout (2.2 V typical).

Key Specifications

Pinout & Package

TPS73527DRVT is housed in a thermally enhanced 2-mm × 2-mm WSON-6 package with exposed thermal pad (DRV suffix). The package supports high-power-density layouts and requires soldering the thermal pad to PCB ground for optimal thermal performance (R_θJB = 34.7°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS73527DRVT, TPS79527DRVR trades noise performance for lower cost and wider availability, while MCP1703T-2702E/MB offers extreme quiescent current savings at the expense of output current, enable functionality, and noise filtering - making TPS73527DRVT the optimal choice for high-fidelity analog power delivery in space-constrained, thermally demanding designs.

Availability

TPS73527DRVT is available at Aetrix Electronics and suitable for IP network cameras, macro base stations, and thermostats requiring stable component supply, long-term manufacturability, and guaranteed traceability through TI's qualified production lines.

Supply support for TPS73527DRVT 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 expertise in high-reliability power solutions for industrial and communications infrastructure.

The TPS735 family was designed specifically for RF and precision analog applications demanding ultra-low noise, high PSRR, and minimal quiescent current - targeting next-generation wireless infrastructure, imaging, and IoT edge devices.

FAQ

What is the minimum input voltage required for TPS73527DRVT to regulate 2.7 V output?

The TPS73527DRVT requires a minimum input voltage of 2.7 V per its recommended operating conditions. However, due to its 280-mV dropout voltage at 500 mA, stable regulation at full load requires VIN ≥ 2.98 V. At light loads (<10 mA), regulation is maintained down to VIN = 2.7 V, as confirmed in the Electrical Characteristics table under "Input voltage" specification.

Can TPS73527DRVT operate without the NR capacitor?

Yes, TPS73527DRVT functions fully without the NR capacitor. The NR pin is internally connected to the bandgap reference and remains functional open-circuit. Omitting the 10-nF capacitor increases output noise to ~95 × V_OUT (≈257 μV_RMS) and reduces PSRR by ~10 dB at 1 kHz, but maintains regulation, enable control, and thermal protection. Startup time remains 45 μs.

Is the thermal pad of TPS73527DRVT required to be soldered to ground?

Yes, the exposed thermal pad on the TPS73527DRVT WSON-6 package must be soldered to a PCB ground plane. TI's Thermal Information table specifies R_θJB = 34.7°C/W assuming a 2×2 thermal via array connecting the pad to inner ground layers. Leaving the pad unconnected degrades thermal performance significantly and risks thermal shutdown under 500-mA load at elevated ambient temperatures.

Does TPS73527DRVT support reverse-voltage protection?

No, TPS73527DRVT does not include reverse-voltage protection. Its internal PMOS pass transistor contains a body diode that conducts from OUT to IN if V_OUT > V_IN. During such reverse-bias conditions, current is uncontrolled and may damage upstream sources or downstream circuitry. An external series Schottky diode or ideal diode controller is required for reverse-polarity resilience.

What is the maximum junction temperature specification for TPS73527DRVT?

The TPS73527DRVT is fully specified over a junction temperature range of –40°C to +125°C. Absolute maximum junction temperature is 150°C, beyond which permanent damage may occur. Thermal shutdown activates at 165°C (trip) and resets at 145°C (hysteresis), providing fail-safe protection during overload or poor heatsinking conditions.