Texas Instruments TPS62671YFDT

Overview

TPS62671YFDT from Texas Instruments is a 6-MHz synchronous step-down DC-DC converter in a 6-pin NanoFree™ DSBGA package, delivering 1.8 V at up to 500 mA from a 2.3 V–4.8 V input. It features 92% peak efficiency, 17 μA quiescent current in PFM mode, ±2% total DC output voltage accuracy, and spread-spectrum PWM for low-noise operation-optimized for space-constrained mobile power rails.

For engineers reviewing the TPS62671YFDT datasheet, TPS62671YFDT pinout, TPS62671YFDT application, or TPS62671YFDT equivalent, key selection criteria include its ultra-thin 0.4 mm height, sub-10 mm² solution size, 6-MHz fixed-frequency regulation with automatic PFM/PWM transition, and support for external clock presence detection in noise-sensitive RF subsystems.

Technical Context

The TPS62671YFDT employs a frequency-locked ring-oscillating modulator architecture-eliminating traditional compensation loops-to achieve instantaneous load/line transient response. Its dual-mode operation (PFM at light loads, regulated 6-MHz PWM at higher loads) enables high efficiency across 0–500 mA while maintaining tight output regulation.

It integrates P- and N-channel MOSFETs with on-resistances of 170 mΩ and 120 mΩ (at V_GS = 3.6 V), supports external clock synchronization (4–27 MHz), and includes undervoltage lockout (2.1 V threshold), thermal shutdown (140 °C), and soft-start via internal control logic-not external capacitor.

Key Specifications

Pinout & Package

TPS62671YFDT uses a 6-pin NanoFree™ DSBGA (CSP) package with 0.4 mm maximum height and 0.5 mm pitch. The die-side-down mounting requires solder-mask-defined pads per TI SLOA172 layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62672YFDT, the TPS62671YFDT delivers 1.8 V for core logic instead of 1.5 V for memory I/O; versus TPS62086YFFR, it offers superior size efficiency and lower quiescent current but lacks automotive qualification and higher thermal margin.

Availability

TPS62671YFDT is available at Aetrix Electronics and suitable for smartphone camera modules, application processor core rails, optical sensor bias supplies, and WLAN/Bluetooth coexistence power systems requiring stable component supply, ultra-thin packaging, and high-frequency switching performance.

Supply support for TPS62671YFDT 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for portable and high-efficiency applications.

The TPS6267x family was designed specifically for ultra-thin, battery-powered mobile devices-prioritizing minimal solution size, sub-0.4 mm height, and best-in-class light-load efficiency without sacrificing transient performance.

FAQ

What is the maximum continuous output current supported by the TPS62671YFDT?

The TPS62671YFDT supports up to 500 mA of continuous output current across its full operating temperature range (–40°C to +85°C) and input voltage range (2.3 V to 4.8 V). Its overcurrent protection triggers at approximately 1000 mA, and thermal shutdown activates at 140°C junction temperature-both safeguarding operation under sustained load conditions.

Does the TPS62671YFDT require an external feedback resistor network?

No, the TPS62671YFDT does not require external feedback resistors. It is a fixed-output device with internally trimmed 1.8 V regulation-FB pin connects directly to V_OUT for sensing. This eliminates resistor tolerance errors and saves PCB area, consistent with its design goal of minimal external components.

How does the MODE pin affect the operation of the TPS62671YFDT?

When MODE is pulled LOW, the TPS62671YFDT operates in automatic PFM/PWM mode-switching to PFM at light loads for ultra-low IQ. When MODE is pulled HIGH, it forces continuous PWM operation at 6 MHz, eliminating frequency variation to reduce EMI peaks-ideal for noise-sensitive RF sections where spectral purity matters more than quiescent current.

Can the TPS62671YFDT be synchronized to an external clock?

Yes-the TPS62671YFDT supports external clock presence detection on the EN pin. When a 4–27 MHz clock signal is applied to EN, the device automatically wakes from shutdown and synchronizes its internal 6-MHz oscillator to that clock's edge, enabling deterministic timing in multi-rail power systems and reducing beat frequencies.

What is the recommended input capacitor for the TPS62671YFDT?

Texas Instruments specifies a minimum 2.2 μF X5R ceramic capacitor (0402 case size, 6.3 V rating) placed within 2 mm of the VIN and GND pins. This value ensures stable operation across the 2.3–4.8 V input range and supports the 6-MHz switching frequency without excessive impedance at high frequencies.