Texas Instruments TPS62933ODRLR

Overview

TPS62933ODRLR from Texas Instruments is a 3-A, synchronous buck converter IC operating from 3.8 V to 30 V input, delivering 0.8 V to 22 V output with ultra-low 12 μA quiescent current (typical), integrated 76-mΩ/32-mΩ MOSFETs, and peak-current-mode control - used in industrial power rails for smart speakers and multifunction printers.

For engineers reviewing the TPS62933ODRLR datasheet, TPS62933ODRLR pinout, TPS62933ODRLR application, or TPS62933ODRLR equivalent, key selection factors include its SOT583 package size, PG pin functionality, PFM light-load efficiency, 500 kHz default switching frequency, and -40°C to 150°C junction temperature rating.

Technical Context

The TPS62933ODRLR employs fixed-frequency peak-current-mode control with internal loop compensation, eliminating external compensation components across 0.8–22 V output and 200 kHz–2.2 MHz switching frequencies. Its optimized pinout supports EMI-friendly layout and prebiased start-up capability.

This variant integrates an open-drain power-good (PG) indicator with 85%–115% V_FB threshold hysteresis and asserts low during thermal shutdown, EN disable, soft-start, or output fault conditions - distinguishing it from SS-pin variants like TPS62933DRLR.

Key Specifications

Pinout & Package

TPS62933ODRLR uses an 8-pin SOT583 package (1.6 mm × 2.1 mm, 0.5-mm pitch) with exposed thermal pad for enhanced thermal dissipation in space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buck converter applications.

Compared with TPS62933PDRLR and TPS62933FDRLR, the TPS62933ODRLR uniquely combines PG monitoring, out-of-audio operation, and spread-spectrum EMI reduction - making it optimal for consumer-facing industrial devices needing quiet, observable power delivery.

Availability

TPS62933ODRLR is available at Aetrix Electronics and suitable for smart speaker power supplies, industrial PC core rails, and building automation controllers requiring stable component supply, long-term manufacturability, and automotive-grade reliability under extended temperature operation.

Supply support for TPS62933ODRLR 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 and embedded processing technologies, with decades of expertise in power management IC design and manufacturing.

The TPS6293x product line was developed to deliver high-efficiency, small-footprint buck converters for industrial, enterprise, and consumer systems operating from wide-input bus voltages - emphasizing ease of use, thermal robustness, and EMI compliance.

FAQ

What is the function of the PG pin on the TPS62933ODRLR?

The PG (power-good) pin on the TPS62933ODRLR is an open-drain output that asserts low when the output voltage falls below 85% of the FB reference, exceeds 115%, or during thermal shutdown, EN disable, or soft-start. It provides system-level power status monitoring with 70 μs turn-on delay and 18 μs turn-off delay - enabling safe sequencing and fault detection in the TPS62933ODRLR-based design.

Does the TPS62933ODRLR support prebiased output startup?

Yes, the TPS62933ODRLR supports monotonic start-up into prebiased outputs, preventing reverse current flow and ensuring controlled ramp-up even when the output capacitor is initially charged. This feature is implemented via internal circuitry that manages gate drive timing during enable, making the TPS62933ODRLR suitable for hot-swap and redundant power applications.

What switching frequency options does the TPS62933ODRLR offer?

The TPS62933ODRLR offers selectable switching frequencies from 200 kHz to 2.2 MHz via the RT pin: floating = 500 kHz (typ), grounded = 1.2 MHz (typ), or resistor-biased for precise values (e.g., 71.5 kΩ → 310 kHz). Frequency spread spectrum is enabled by default, reducing EMI peaks without external components - a key differentiator of the TPS62933ODRLR.

How does the TPS62933ODRLR differ from the TPS62933DRLR?

The TPS62933ODRLR features a PG pin and out-of-audio (OOA) operation, whereas the TPS62933DRLR has an SS (soft-start) pin and uses pulse frequency modulation (PFM). The TPS62933ODRLR's OOA mode avoids audible coil whine, and its PG output enables real-time power health monitoring - making the TPS62933ODRLR distinct in noise-critical and safety-monitored applications.

What thermal performance can be expected from the TPS62933ODRLR in a standard 2-layer PCB?

On a standard 2-layer evaluation board (2-oz copper), the TPS62933ODRLR achieves a junction-to-ambient thermal resistance (R_θJA) of 60.2°C/W. With its 1.6 mm × 2.1 mm SOT583 package and exposed thermal pad, the device sustains 3-A continuous output at full load up to +85°C ambient - and derates gracefully to 150°C maximum junction temperature per specification.