Texas Instruments TPS62825DMQT

Overview

TPS62825DMQT from Texas Instruments is a synchronous step-down DC/DC converter optimized for 2A output current, operating from 2.4V to 5.5V input and delivering adjustable 0.6V–4.0V output with ±1% feedback accuracy over –40°C to 125°C. It uses DCS-Control topology, features 2.2MHz fixed-frequency PWM operation, 4μA quiescent current, and integrated 26mΩ/25mΩ MOSFETs - deployed in portable electronics and industrial PCs requiring compact, high-efficiency point-of-load regulation.

For engineers reviewing the TPS62825DMQT datasheet, TPS62825DMQT pinout, TPS62825DMQT application, or TPS62825DMQT equivalent, key selection criteria include its 2A continuous output capability, 1.5mm × 1.5mm VSON-HR (DMQ) package, power-good signaling, active output discharge, and compatibility with low-ESR ceramic output capacitors in space-constrained designs.

Technical Context

The TPS62825DMQT implements adaptive constant-on-time DCS-Control with seamless transition between PWM and power-save mode (PSM), maintaining regulation stability across load transients while minimizing light-load quiescent current. Its control loop integrates an internal 0.6V reference and supports external resistor-divider feedback for precise output voltage setting.

It operates with 100% duty-cycle capability for ultra-low dropout, incorporates hiccup-mode short-circuit protection with 32-cycle detection latency, and delivers regulated output under thermal shutdown (150°C trip) and UVLO (2.2V threshold with 160mV hysteresis) conditions - all within a 6-pin VSON-HR package with exposed thermal pad.

Key Specifications

Pinout & Package

TPS62825DMQT is housed in a 6-pin VSON-HR (DMQ) package measuring 1.5mm × 1.5mm with an exposed thermal pad on the bottom. The package supports reflow soldering per JEDEC J-STD-020 and requires thermal vias under the pad for optimal junction-to-board conduction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62825DMQT, TPS6282518DMQT removes design flexibility for voltage adjustment but simplifies layout, while TPS62825ADMQT trades quiescent efficiency for deterministic ripple performance - making the base TPS62825DMQT optimal for general-purpose 2A adjustable POL where both light-load efficiency and transient response matter.

Availability

TPS62825DMQT is available at Aetrix Electronics and suitable for solid state drives, portable electronics, and industrial PCs requiring stable component supply with full production traceability and long-term lifecycle support.

Supply support for TPS62825DMQT 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management ICs for industrial, automotive, and consumer markets.

The TPS6282x family was designed specifically for high-density, low-quiescent-current point-of-load conversion in battery-powered and thermally constrained systems - emphasizing small solution size, ±1% accuracy, and seamless light-to-heavy load efficiency.

FAQ

What is the maximum continuous output current of the TPS62825DMQT?

The TPS62825DMQT is rated for 2 A continuous output current under recommended operating conditions (T_J ≤ 125°C, adequate PCB copper area). This is confirmed in Section 4 Device Options and Section 6.3 Recommended Operating Conditions of the datasheet, where I_OUT range for TPS62825x is specified as 0–2 A. Derating applies above 85°C ambient depending on layout thermal performance.

Does the TPS62825DMQT support adjustable output voltage?

Yes, the TPS62825DMQT supports adjustable output voltage from 0.6 V to 4.0 V using an external resistor divider connected to the FB pin. The internal reference is 0.6 V, and Equation 4 in the datasheet (R1 = R2 × (V_OUT/0.6 V − 1)) defines the calculation. Fixed-output variants like TPS6282518DMQT exist but are separate orderable parts.

What package type and dimensions does the TPS62825DMQT use?

The TPS62825DMQT uses the DMQ package: a 6-pin VSON-HR (very thin small outline no-lead) with 1.5 mm × 1.5 mm body size and an exposed thermal pad. This is explicitly stated in the "Device Information" table and Section 11 Mechanical, Packaging, and Orderable Information of the datasheet. Pin pitch is 0.5 mm.

How does the power-good (PG) function operate on the TPS62825DMQT?

The PG pin on the TPS62825DMQT is an open-drain output that goes high-impedance when V_FB reaches 94–98% of the target output voltage. It sinks up to 1 mA and requires an external pullup ≤5.5 V. PG asserts low during startup, shutdown, UVLO, or thermal fault - enabling safe power sequencing with other rails. Deglitch delays are 100 μs (rising) and 20 μs (falling).

Can the TPS62825DMQT operate with 100% duty cycle, and what is its minimum dropout voltage?

Yes, the TPS62825DMQT supports 100% duty cycle operation, allowing it to maintain regulation when V_IN approaches V_OUT. Minimum dropout is determined by I_OUT × R_DS(on) + I_OUT × DCR_L, where R_DS(on) = 26 mΩ (high-side). At 2 A, theoretical dropout is ~52 mV plus inductor DCR - verified in Section 7.3.3 and typical application schematics.