Texas Instruments TPS63002DRCTG4

Overview

TPS63002DRCTG4 from Texas Instruments is a fixed-output 5-V buck-boost DC-DC converter IC designed for single-cell Li-ion/Li-polymer and multi-cell alkaline/NiMH battery-powered systems. It operates across 1.8 V to 5.5 V input, delivers up to 1200 mA at 5 V output, achieves up to 96% peak efficiency, and integrates synchronous 4-switch topology with automatic mode transition between buck and boost. It serves as the primary power rail regulator in portable medical devices and smart handhelds.

For engineers reviewing the TPS63002DRCTG4 datasheet, TPS63002DRCTG4 pinout, TPS63002DRCTG4 application, or TPS63002DRCTG4 equivalent, key selection criteria include its fixed 5-V output, 10-pin VSON (3 mm × 3 mm) package, 1.25–1.5 MHz switching frequency, power-save mode enablement via PS/SYNC, and load disconnect during shutdown - all critical for compact, battery-sensitive designs requiring stable regulated voltage across wide input ranges.

Technical Context

The TPS63002DRCTG4 implements average current-mode control with dual-loop regulation: a fast inner current loop and outer voltage loop using FB feedback. Input and output voltage feedforward enables rapid transient response during input/output perturbations. Its 4-switch synchronous architecture dynamically configures one active switch, one rectifying switch, one permanently-on switch, and one permanently-off switch - eliminating simultaneous conduction losses and minimizing RMS current in both switches and inductor.

Operation is governed by internal reference (500 mV at FB), undervoltage lockout (1.5–1.8 V on VINA), overtemperature protection (140 °C trip, 20 °C hysteresis), and soft-start limiting initial inrush to ~400 mA. The device supports forced fixed-frequency operation or synchronization to external clock (1.25–1.8 MHz range) via PS/SYNC, and uses separate GND (control) and PGND (power) pins to prevent ground shift under high-current switching.

Key Specifications

Pinout & Package

TPS63002DRCTG4 is housed in a thermally enhanced 10-pin VSON (DRC) package measuring 3.00 mm × 3.00 mm, with an exposed thermal pad connected to PGND for efficient heat dissipation in high-current applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buck-boost regulator applications.

Compared with TPS63020DSJR and MAX77827BEWC+T, the TPS63002DRCTG4 offers optimal balance of fixed 5-V simplicity, proven 1.2-A capability, and mature thermal performance in the widely adopted 3×3 mm VSON package - making it ideal for cost- and reliability-sensitive portable applications without need for programmability or extreme miniaturization.

Availability

TPS63002DRCTG4 is available at Aetrix Electronics and suitable for portable medical monitors, smart wearables, handheld barcode scanners, and wireless audio transmitters requiring stable component supply across production lifecycles.

Supply support for TPS63002DRCTG4 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 decades of expertise in high-efficiency DC-DC conversion.

The TPS6300x family was engineered specifically for battery-powered portable electronics requiring seamless voltage regulation across wide input ranges - targeting applications where size, efficiency, and reliability outweigh configurability needs.

FAQ

What is the output voltage configuration of the TPS63002DRCTG4?

The TPS63002DRCTG4 features a factory-trimmed fixed 5.0-V output. Unlike adjustable variants (e.g., TPS63000), it does not require external resistors: the FB pin must be directly connected to VOUT to close the internal feedback loop. This eliminates component count and calibration risk in production, making TPS63002DRCTG4 ideal for cost-sensitive, high-volume portable designs where 5 V is the target rail.

Does the TPS63002DRCTG4 support automatic transition between buck and boost modes?

Yes, the TPS63002DRCTG4 automatically transitions between step-down and step-up operation without external intervention or mode pins. When input voltage exceeds 5 V (e.g., 5.5 V from fresh alkaline cells), it operates in buck mode; when input drops below 5 V (e.g., 2.4 V from depleted Li-ion), it seamlessly switches to boost mode - all while maintaining tight 5-V regulation and high efficiency across the full 1.8–5.5 V input range.

What thermal considerations apply to the TPS63002DRCTG4 in continuous 1.2-A operation?

In continuous 1.2-A operation at 5 V, the TPS63002DRCTG4 dissipates ~0.6 W (based on 90% efficiency). With its R_θJA of 46.8 °C/W, junction temperature rise above ambient is ~28 °C - well within the 125 °C max operating limit. To ensure reliability, the exposed thermal pad must be soldered to a minimum 100 mm² copper pour connected to PGND, and airflow or board-level thermal vias should be used in enclosed assemblies.

How does the PS/SYNC pin function on the TPS63002DRCTG4?

The PS/SYNC pin on the TPS63002DRCTG4 serves three roles: pulled low (≤0.4 V) enables power-save mode for improved light-load efficiency; driven high (≥1.2 V) forces fixed-frequency PWM operation; and driven with a 1.25–1.8 MHz clock signal synchronizes switching via internal PLL. This flexibility allows designers to optimize for battery life, EMI control, or system-level timing coordination without changing hardware.

Is load disconnect truly implemented during shutdown of the TPS63002DRCTG4?

Yes - when EN is pulled low, the TPS63002DRCTG4 disables all four internal MOSFETs and opens the power path between VIN and VOUT. Measurements confirm output voltage collapses to <10 mV within microseconds, and shutdown current remains ≤1 µA. This true load disconnect prevents battery drain through downstream leakage paths, a critical feature for devices requiring years of shelf life or infrequent wake-up cycles.