Texas Instruments TPS62152RGTR

Overview

TPS62152RGTR from Texas Instruments is a 3-V to 17-V, 1-A synchronous step-down DC-DC converter with fixed 3.3-V output, DCS-Control™ topology, 2.5-MHz typical switching frequency, and integrated power-good (PG) output. It delivers high efficiency across load range via seamless PWM-to-power-save mode transition and supports 100% duty-cycle operation for battery-end-of-life extension in portable embedded systems.

For engineers reviewing the TPS62152RGTR datasheet, TPS62152RGTR pinout, TPS62152RGTR application, or TPS62152RGTR equivalent, key selection criteria include its fixed 3.3-V output, VQFN-16 (3 mm × 3 mm) package, 17-µA quiescent current in power-save mode, pin-selectable +5% voltage margining via DEF pin, and compatibility with Li-ion, 12-V rail, and POL supply architectures.

Technical Context

The TPS62152RGTR implements DCS-Control™ topology-combining hysteretic, voltage-mode, and current-mode advantages-to achieve fast transient response, high output-voltage accuracy, and stable regulation with low-ESR capacitors. Its internal error amplifier and direct-control comparator enable ac-loop responsiveness tied to output voltage changes while maintaining dc load regulation.

It operates in PWM mode at 2.5 MHz (FSW = low) or 1.25 MHz (FSW = high), enters power-save mode below light-load thresholds without output disturbance, and sustains regulation down to input voltages as low as ~3.8 V at full load via 100% duty-cycle operation enabled by low R_DS(on) (90 mΩ high-side, 40 mΩ low-side at VIN ≥ 6 V).

Key Specifications

Pinout & Package

TPS62152RGTR 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 power dissipation (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 TPS62152RGTR, TPS62151RGTR and TPS62153RGTR offer identical thermal performance, quiescent current, and DCS-Control™ transient response-but differ solely in factory-trimmed output voltage, making them ideal for platform designs requiring multiple fixed-output rails with shared layout and qualification effort.

Availability

TPS62152RGTR is available at Aetrix Electronics and suitable for solid-state drives, embedded gateways, and portable instrumentation requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS62152RGTR 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 and automotive-grade reliability.

The TPS6215x product line was designed specifically for high-density, low-noise point-of-load applications in space-constrained portable and industrial electronics-emphasizing fast transient response, ultra-low IQ, and seamless light-load efficiency.

FAQ

What is the maximum input voltage rating for the TPS62152RGTR?

The TPS62152RGTR has an absolute maximum input voltage rating of 20 V on PVIN and AVIN pins, but its recommended operating input voltage range is strictly 3 V to 17 V. Operation above 17 V may cause premature device failure or violate safety margins defined in the datasheet's Absolute Maximum Ratings table. Always maintain input filtering and transient suppression to prevent voltage spikes exceeding 20 V.

Does the TPS62152RGTR require external compensation components?

No, the TPS62152RGTR does not require external compensation components. Its DCS-Control™ topology uses an internally compensated regulation network optimized for stability with small ceramic output capacitors (e.g., 22 µF X5R/X7R) and low-ESR inductors. This eliminates the need for external RC networks or type-II/type-III compensators-reducing BOM count and layout complexity while ensuring robust performance across temperature and load variations.

How does the DEF pin affect the output voltage of the TPS62152RGTR?

The DEF pin on the TPS62152RGTR selects between two factory-trimmed output voltages: logic low (GND) yields nominal 3.3 V, and logic high (≥2 V) increases output to 3.465 V (+5%). This margining function is implemented via internal resistor-divider scaling and requires no external components. The pin features an internal 400-kΩ pulldown, ensuring safe 3.3-V default if left unconnected or driven high only during test phases.

Can the TPS62152RGTR operate with a pre-biased output capacitor?

Yes, the TPS62152RGTR supports monotonic start-up into a pre-biased output. When EN is asserted, the internal soft-start ramp begins only after detecting that the SS/TR pin voltage exceeds the pre-bias level-preventing reverse current flow and output voltage collapse. This capability is confirmed in Section 8.3.2 of the datasheet and enables safe integration in hot-swap or multi-rail systems where downstream capacitance retains charge during power cycling.

What thermal derating guidance applies to the TPS62152RGTR at 1-A load?

At 1-A continuous load and ambient temperature of 85°C, the TPS62152RGTR junction temperature rises approximately 45°C above ambient (using R_θJA = 45°C/W), reaching ~130°C-within its 150°C max operating limit. For sustained 1-A operation above 85°C ambient, reduce load current linearly or enhance PCB copper area and airflow. Thermal shutdown triggers at 160°C (typ.), providing safety margin, but design should target ≤125°C junction for long-term reliability per JEDEC JEP47.