Texas Instruments TPS62152RGTT

Overview

TPS62152RGTT 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 3.3-V output with ±1% initial accuracy. Its DCS-Control™ topology enables fast transient response and stable regulation in POL supplies for embedded systems and solid-state drives.

For engineers reviewing the TPS62152RGTT datasheet, TPS62152RGTT pinout, TPS62152RGTT application, or TPS62152RGTT equivalent, key selection criteria include its 3-mm × 3-mm VQFN-16 package, 2.5-MHz (typ.) switching frequency, 17-µA quiescent current in power-save mode, seamless PWM-to-PSM transition, and integrated power-good output with open-drain logic.

Technical Context

The TPS62152RGTT implements DCS-Control™ topology-combining voltage-mode, current-mode, and hysteretic control elements-to achieve direct ac loop feedback from output voltage changes, enabling immediate dynamic load response while maintaining precise dc regulation via an internally compensated error amplifier. Its dual-mode operation (PWM at medium/heavy loads, power-save mode at light loads) ensures high efficiency across the full 0–1-A load range without external compensation.

It integrates a high-side MOSFET (90 mΩ typ. at VIN ≥ 6 V) and low-side MOSFET (40 mΩ typ.), supports 100% duty-cycle operation for ultra-low dropout, and features programmable soft-start/tracking via external capacitor on SS/TR pin. The device uses internal voltage scaling (DEF pin) to adjust output by ±5%, and selectable switching frequency (FSW pin) between 1.25 MHz and 2.5 MHz for trade-offs between efficiency and ripple.

Key Specifications

Pinout & Package

TPS62152RGTT is housed in a thermally enhanced 16-pin VQFN package (RGT), measuring 3.00 mm × 3.00 mm, with an exposed thermal pad soldered to AGND/PGND for optimal junction-to-board thermal resistance (R_θJB = 17.4°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62152RGTT, TPS62132RGTR offers higher current headroom and output adjustability at the expense of added BOM complexity, while MP2451DT-LF-Z trades advanced control features for raw current capability and broader input range-making TPS62152RGTT optimal for space-constrained, feature-rich POL designs demanding precision and reliability.

Availability

TPS62152RGTT is available at Aetrix Electronics and suitable for embedded systems power rails, solid-state drive core supplies, and point-of-sale terminal logic circuits requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for TPS62152RGTT 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-efficiency DC-DC conversion.

The TPS6215x family was designed specifically for high-power-density point-of-load applications in battery-powered and 12-V-rail systems, emphasizing small solution size, ultra-low quiescent current, and seamless light-load efficiency.

FAQ

What is the maximum continuous output current of the TPS62152RGTT?

The TPS62152RGTT delivers up to 1-A continuous output current under recommended operating conditions (TJ ≤ 125°C, VIN = 3–17 V). This rating assumes proper PCB thermal design-including soldering the exposed thermal pad to AGND/PGND-and use of a 2.2-µH inductor with ≤50-mΩ DCR. Peak current capability exceeds 1.7 A briefly during transient events, limited by internal cycle-by-cycle protection.

Does the TPS62152RGTT require external feedback resistors to set its output voltage?

No, the TPS62152RGTT does not require external feedback resistors. It is a fixed-output-voltage variant delivering 3.3 V with ±1% initial accuracy. The internal resistor divider is factory-trimmed and connected directly to the FB pin; TI recommends tying FB to AGND for optimal thermal performance and regulation stability-no external components are needed for basic operation.

How does the TPS62152RGTT handle power sequencing in multi-rail systems?

The TPS62152RGTT supports robust power sequencing via its EN (enable) and PG (power-good) pins. The EN pin can be driven by another rail's PG signal to enforce turn-on order, while its open-drain PG output-active high when VOUT reaches 92–98% of 3.3 V-can trigger downstream enables. Combined with SS/TR pin tracking capability, it enables monotonic start-up and coordinated ramping across multiple supplies without external timers.

Can the TPS62152RGTT operate with input voltage as low as the output voltage?

Yes, the TPS62152RGTT supports 100% duty-cycle operation, allowing it to maintain regulation even when VIN approaches VOUT (3.3 V). In this mode, the high-side MOSFET remains continuously on, minimizing dropout. Minimum functional VIN depends on load: for 1-A output, VIN must stay above ≈3.6 V (accounting for RDS(on)_HS and inductor DCR); at lighter loads, it sustains regulation down to VIN ≈ 3.35 V.

What thermal performance can be expected from the TPS62152RGTT in a standard 2-layer PCB layout?

In a standard 2-layer PCB with 1-in² copper pour connected to the exposed thermal pad, the TPS62152RGTT achieves a junction-to-board thermal resistance (R_θJB) of 17.4°C/W. At 1-A load and 12-V input, typical power dissipation is ~350 mW, resulting in ≈6°C junction-to-ambient rise above board temperature-well within the 125°C max operating junction limit. Full derating guidance is provided in Section 7.4 of the datasheet.