Texas Instruments TPS62067DSGT

Overview

TPS62067DSGT from Texas Instruments is a synchronous step-down DC/DC converter delivering up to 2-A output current with 3-MHz fixed-frequency PWM or auto PFM/PWM mode operation. It accepts 2.9 V–6 V input, regulates output voltage via external feedback divider, and features an open-drain power good (PG) output. It targets compact, high-efficiency point-of-load regulation in space-constrained portable electronics.

For engineers reviewing the TPS62067DSGT datasheet, TPS62067DSGT pinout, TPS62067DSGT application, or TPS62067DSGT equivalent, key selection considerations include its 2-mm × 2-mm WSON-8 package, ±1.5% output voltage accuracy in PWM mode, 18 µA quiescent current in PFM, internal output capacitor discharge, and PG signal timing with 5-µs delay - all critical for battery-powered sequencing and low-noise POL designs.

Technical Context

The TPS62067DSGT employs a voltage-mode control architecture with input voltage feed-forward, enabling fast transient response and stable regulation using small 1-µH inductors and 10-µF ceramic output capacitors. Its dual-mode operation automatically transitions between 3-MHz PWM (for low ripple) and PFM (for high light-load efficiency), with dynamic voltage positioning active in PFM to maintain +1% output offset.

It integrates high-side and low-side MOSFETs with typical R_DS(on) of 120 mΩ / 90 mΩ at 3.6 V, supports 100% duty cycle for ultra-low dropout, and includes undervoltage lockout (1.78 V fall / 1.95 V rise), thermal shutdown (150°C), and clock dithering to suppress EMI harmonics.

Key Specifications

Pinout & Package

TPS62067DSGT is housed in an 8-pin, 2.0 mm × 2.0 mm × 0.75 mm WSON (DSG) package with exposed PowerPAD™ for thermal dissipation. The PowerPAD must be soldered to PCB ground for optimal thermal performance (R_θJB = 35.4°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62065DSGT, the TPS62067DSGT adds essential power-good signaling for safe sequencing without increasing size or cost; versus TPS62130ARGTR, it trades 1-A current headroom for guaranteed pin-compatible PG integration and superior light-load efficiency in the same 2-mm × 2-mm footprint.

Availability

TPS62067DSGT is available at Aetrix Electronics and suitable for point-of-load regulation, notebook core voltage supply, DSP power management, and portable media player SoC supply requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance.

Supply support for TPS62067DSGT 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, embedded processing, and power management technologies, with decades of leadership in high-efficiency DC/DC conversion.

The TPS6206x product line was designed specifically for ultra-compact, high-frequency POL applications in portable and space-constrained electronics, emphasizing minimal bill-of-materials, low profile, and seamless light-to-heavy load efficiency.

FAQ

What is the function of the PG pin on the TPS62067DSGT?

The PG (Power Good) pin on the TPS62067DSGT is an open-drain output that signals when the regulated output voltage is within specification. It asserts high when the feedback voltage reaches ≥95% of the target and pulls low when it falls ≤90%. With a 5-µs internal delay, it enables reliable power sequencing and microcontroller reset. The TPS62067DSGT requires an external pullup resistor (≤1 mA current limit) connected to a rail ≤AVIN.

Does the TPS62067DSGT support adjustable output voltages?

Yes, the TPS62067DSGT supports fully adjustable output voltages from 0.8 V to V_IN using an external resistor divider connected to the FB pin. The internal reference is 0.6 V, so V_OUT = 0.6 V × (1 + R1/R2). This flexibility allows precise tailoring for diverse loads like 1.2 V, 1.8 V, or 3.3 V rails without changing the TPS62067DSGT part number.

How does the TPS62067DSGT manage efficiency across load conditions?

The TPS62067DSGT maintains high efficiency across load ranges by automatically transitioning between 3-MHz fixed-frequency PWM mode (moderate-to-heavy loads) and pulse-frequency modulation (PFM) mode (light loads). In PFM, quiescent current drops to 18 µA while dynamic voltage positioning holds V_OUT at +1% to improve transient response - all without external mode control. This dual-mode operation is intrinsic to the TPS62067DSGT design.

What thermal performance can be expected from the TPS62067DSGT in its WSON package?

The TPS62067DSGT in the 2-mm × 2-mm DSG (WSON-8) package achieves a junction-to-board thermal resistance (R_θJB) of 35.4°C/W when the PowerPAD™ is properly soldered to a thermal pad on the PCB. With recommended layout - including ≥4 thermal vias under the PowerPAD tied to inner ground planes - the device sustains 2-A continuous output at 125°C junction temperature under typical ambient conditions.

Can the TPS62067DSGT operate with input voltage below its nominal output voltage?

Yes, the TPS62067DSGT supports 100% duty cycle operation, allowing it to regulate output even when input voltage approaches or slightly falls below the nominal output voltage. As V_IN decreases, the high-side MOSFET remains continuously on, minimizing dropout to I_OUT × (R_DS(on) + R_L). This feature extends usable battery range in applications powered by single-cell Li-ion sources, a core capability of the TPS62067DSGT.