Texas Instruments TPS62141RGTT

Overview

TPS62141RGTT from Texas Instruments is a fixed-output 1.8-V, 2-A synchronous step-down DC-DC converter with DCS-Control™ topology, 3 V to 17 V input range, and 17 µA quiescent current - designed for high-density POL supplies in battery-powered embedded systems and solid-state drives.

For engineers reviewing the TPS62141RGTT datasheet, TPS62141RGTT pinout, TPS62141RGTT application, or TPS62141RGTT equivalent, key selection criteria include its 1.8-V fixed output, VQFN-16 (3 mm × 3 mm) package, seamless PWM-to-power-save mode transition, and integrated power-good output with open-drain logic.

Technical Context

The TPS62141RGTT implements DCS-Control™ - a hybrid regulation architecture combining voltage-mode feedback with direct output-voltage sensing and fast comparator-based transient response - enabling stable operation with small ceramic capacitors and low-ESR output filters. It operates at 2.5 MHz (FSW = low) or 1.25 MHz (FSW = high), supporting both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) with automatic, seamless mode transitions.

Its control loop integrates soft-start/tracking via external capacitor on SS/TR, programmable output voltage scaling (+5% via DEF pin), and 100% duty-cycle operation for ultra-low dropout - critical for Li-ion battery discharge tail-end support. Thermal shutdown (160°C) and undervoltage lockout (2.7 V, 200 mV hysteresis) ensure robust system-level protection.

Key Specifications

Pinout & Package

TPS62141RGTT is housed in a thermally enhanced 16-pin VQFN package (RGT), 3.00 mm × 3.00 mm body size, with exposed thermal pad soldered to AGND/PGND for optimal thermal performance (R_θJA = 45°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62142RGTT, the TPS62141RGTT delivers lower output voltage for core logic while maintaining identical thermal and transient performance; versus TPS62130ARGTT, it trades adjustability for reduced component count and guaranteed 1.8-V accuracy without resistor tolerance errors.

Availability

TPS62141RGTT is available at Aetrix Electronics and suitable for mobile PCs, solid-state drives, and battery-powered camera modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS62141RGTT 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 TPS6214x product line was engineered for high-power-density point-of-load regulation in space-constrained, thermally sensitive applications - including portable computing, storage, and imaging systems.

FAQ

What is the output voltage accuracy of the TPS62141RGTT over temperature and line/load conditions?

The TPS62141RGTT delivers 1.8 V ±1.5% initial accuracy at 25°C, with total output voltage variation of ±2.5% across –40°C to 125°C junction temperature, 3 V to 17 V input, and 0–2 A load - verified per Section 7.5 of the official datasheet. This includes effects of line regulation (0.02%/V), load regulation (0.05%/A), and internal resistor divider tolerance. The TPS62141RGTT maintains this specification without external trimming components.

Does the TPS62141RGTT support power sequencing with other rails in a multi-rail system?

Yes, the TPS62141RGTT supports robust power sequencing via its active-high EN pin and open-drain PG output. EN can be driven by another rail's PG signal to enforce turn-on order, while PG asserts high-impedance only after VOUT reaches 92–98% of 1.8 V. This enables safe startup of FPGAs, SoCs, or memory controllers. The TPS62141RGTT also supports tracking via SS/TR pin for synchronized ramp-up with master supplies.

Can the TPS62141RGTT operate from a single-cell Li-ion battery throughout its full discharge curve?

Yes, the TPS62141RGTT operates from 3 V to 17 V input and enters 100% duty-cycle mode when VIN approaches VOUT, sustaining regulation down to ~1.95 V input at full 2-A load. Its 2.7-V UVLO with 200-mV hysteresis ensures clean startup above battery cutoff, and 17-µA quiescent current minimizes drain during sleep. The TPS62141RGTT is validated for direct single-cell Li-ion use in cameras and portable instruments.

What is the recommended inductor value and type for the TPS62141RGTT at 2.5-MHz operation?

Texas Instruments recommends a 1.0-µH to 2.2-µH shielded power inductor with ≥3-A saturation current and DC resistance <30 mΩ for 2.5-MHz operation. For example, the Coilcraft XAL5030-102ME or Würth 74437324100 are validated choices. Inductor selection directly impacts peak current ripple (target <30% of IOUT), thermal rise, and EMI - the TPS62141RGTT's DCS-Control topology tolerates wide inductance ranges without compensation.

How does the TPS62141RGTT handle short-circuit conditions on its output?

Under short-circuit (VOUT < 0.5 V), the TPS62141RGTT reduces its current limit from 2.45–3.5 A to 1.6 A (typical) to limit power dissipation and prevent thermal damage. It continues switching in hiccup mode - cycling between brief on-time and off-time - until fault clears. Recovery is automatic once VOUT rises above 0.5 V. This behavior is documented in Section 8.4.4 and confirmed in electrical characteristics tables for the TPS62141RGTT.