Texas Instruments TPS62153RGTR

Overview

TPS62153RGTR from Texas Instruments is a synchronous step-down DC-DC converter optimized for high-power-density applications. It delivers up to 1-A continuous output current, supports input voltages from 3 V to 17 V, and provides a fixed 5.0-V output with ±1% initial accuracy. Its DCS-Control™ topology enables fast transient response and high output-voltage accuracy-key for powering embedded systems and solid-state drives.

For engineers reviewing the TPS62153RGTR datasheet, TPS62153RGTR pinout, TPS62153RGTR application, or TPS62153RGTR equivalent, this page details confirmed electrical specifications, thermal performance, power-good behavior, soft-start/tracking capability, and verified pin-to-pin alternatives for industrial and battery-powered designs.

Technical Context

The TPS62153RGTR implements DCS-Control™ topology-a hybrid regulation scheme combining voltage-mode and hysteretic control to deliver stable regulation with minimal external components. It operates in PWM mode at 2.5 MHz (FSW = low) or 1.25 MHz (FSW = high), enabling small inductor selection while maintaining tight output voltage regulation across load transients.

It integrates dual MOSFETs with typical rDS(on) of 90 mΩ (high-side) and 40 mΩ (low-side) at VIN ≥ 6 V, supports seamless transition into power-save mode below ~250 mA, and includes undervoltage lockout (2.7 V threshold, 200-mV hysteresis), thermal shutdown (160°C), and short-circuit protection with dynamic current limiting.

Key Specifications

Pinout & Package

TPS62153RGTR is housed in a thermally enhanced 16-pin VQFN package (RGT), measuring 3.0 mm × 3.0 mm with an exposed thermal pad soldered to AGND/PGND for optimal power dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down converter applications.

Compared with TPS62152RGTR, the TPS62153RGTR provides higher output voltage for USB-peripheral compatibility and analog biasing; compared with TPS62130ARGTR, it supports wider input range and advanced features like DEF scaling and seamless power-save-making it superior for mixed-rail industrial systems.

Availability

TPS62153RGTR is available at Aetrix Electronics and suitable for solid-state drives, embedded systems, and point-of-sale terminals requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS62153RGTR 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 90 years of innovation in high-reliability electronic components.

The TPS6215x product line was designed specifically for high-density, wide-input-voltage DC-DC conversion in space-constrained applications such as SSDs, mobile computing, and industrial edge devices-emphasizing efficiency, thermal robustness, and ease of integration.

FAQ

What is the output voltage accuracy of the TPS62153RGTR under full load and temperature range?

The TPS62153RGTR delivers a fixed 5.0-V output with ±1% initial accuracy at room temperature and ±2% over the full operating junction temperature range (–40°C to 125°C) under PWM mode, as specified in Section 7.5 of the datasheet. This accuracy includes line and load regulation effects with recommended external components and proper PCB layout.

Does the TPS62153RGTR support 100% duty-cycle operation, and what is the minimum input voltage for regulation?

Yes, the TPS62153RGTR supports 100% duty-cycle mode to maintain regulation when VIN approaches VOUT. The minimum input voltage for regulation depends on load current and component resistances: V_IN(min) = V_OUT + I_OUT × (r_DS(on) + R_L). At 1-A load, with typical r_DS(on) = 90 mΩ and R_L = 30 mΩ, V_IN(min) ≈ 5.12 V.

How does the power-good (PG) pin behave during startup and fault conditions for the TPS62153RGTR?

For the TPS62153RGTR, the PG pin is open-drain and remains high-impedance until V_FB rises above 95% of nominal (4.75 V). It pulls low only if V_FB drops below 90%. During EN-driven shutdown, UVLO, or thermal shutdown, PG returns to high-impedance-not actively low-distinguishing it from the TPS62150A variant.

Can the TPS62153RGTR be used to replace an LDO in a 5-V rail, and what efficiency improvement is expected?

Yes, the TPS62153RGTR is explicitly positioned as an LDO replacement. At 1-A output, it achieves >94% efficiency from 12-V input (vs. <50% for a typical 5-V LDO), reducing power dissipation from >7 W to <0.4 W. This eliminates heatsinks, enables smaller enclosures, and improves system thermal margins in dense PCB layouts.

What thermal performance can be expected from the TPS62153RGTR in a standard 4-layer PCB with 2 oz copper?

With proper layout-including full thermal pad soldering to AGND/PGND planes and ≥2 cm² of inner-layer copper pour-the TPS62153RGTR achieves a junction-to-board thermal resistance (R_θJB) of 17.4°C/W. At 1-A load and 12-V input, power dissipation is ~0.35 W, resulting in <7°C junction-to-ambient rise above board temperature-well within the 125°C max operating limit.