Texas Instruments TPS54260MDGQTEP

Overview

TPS54260MDGQTEP from Texas Instruments is a radiation-hardened 3.5-V to 60-V, 2.5-A step-down DC/DC converter with integrated 200-mΩ high-side MOSFET, Eco-mode™ pulse-skipping control, and 138-μA no-load quiescent current-designed for 12-V/24-V automotive, aerospace, and industrial power rails requiring high input voltage tolerance and extended temperature operation (–55°C to 125°C).

For engineers reviewing the TPS54260MDGQTEP datasheet, TPS54260MDGQTEP pinout, TPS54260MDGQTEP application, or TPS54260MDGQTEP equivalent, key selection criteria include input voltage range (3.5–60 V), adjustable switching frequency (100 kHz–2.5 MHz), PWRGD open-drain power-good output, EN-controlled UVLO hysteresis, and thermal shutdown at 182°C.

Technical Context

The TPS54260MDGQTEP implements constant-frequency peak-current-mode control with internal slope compensation to prevent subharmonic oscillation across full duty cycle range. Its Eco-mode™ operates by clamping COMP at 500 mV and inhibiting high-side switching when peak inductor current falls below threshold-reducing gate drive and switching losses at light loads.

It features a boot UVLO circuit monitoring BOOT–PH voltage (trip at 2.1 V) to sustain 100% duty cycle operation until bootstrap charge depletes; an open-drain PWRGD comparator asserts low outside 94–107% of nominal VOUT; and RT/CLK supports both resistor-set frequency tuning and external clock synchronization via PLL lock.

Key Specifications

Pinout & Package

TPS54260MDGQTEP is packaged in a thermally enhanced 10-pin HVSSOP (DGQ) with 3.00 mm × 4.90 mm body and exposed PowerPAD for PCB-level thermal conduction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM5164QPWPRQ1, TPS54260MDGQTEP provides critical PWRGD signaling and UVLO configurability for safety-aware systems; versus TPS54360BMDGQTEP, it offers lower current rating but reduced conduction loss at partial load due to optimized 200-mΩ MOSFET.

Availability

TPS54260MDGQTEP is available at Aetrix Electronics and suitable for aerospace avionics, defense radar subsystems, and industrial PLCs requiring stable component supply across extended product lifecycles and extreme environmental conditions.

Supply support for TPS54260MDGQTEP 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 heritage in high-reliability and space-grade components.

The TPS54260MDGQTEP belongs to TI's Enhanced Product (EP) family-engineered for defense, aerospace, and medical applications with controlled baselines, extended temperature support (–55°C to 125°C), and full traceability.

FAQ

What is the maximum continuous output current supported by the TPS54260MDGQTEP?

The TPS54260MDGQTEP delivers up to 2.5 A of continuous output current under recommended operating conditions (TJ ≤ 150°C, proper PCB thermal design). Derating applies above 85°C ambient; thermal performance depends on PowerPAD soldering quality and copper area. The device includes overcurrent protection that limits peak switch current to 3.5–6.1 A depending on junction temperature.

Does the TPS54260MDGQTEP support synchronization to an external clock?

Yes, the TPS54260MDGQTEP supports external clock synchronization via the RT/CLK pin. When driven with a clean CMOS clock signal between 300 kHz and 2.2 MHz, the internal PLL locks to the falling edge, enabling deterministic EMI reduction and multi-rail phase alignment. The pin automatically reverts to resistor-set mode if clock signal stops.

How does the Eco-mode™ operation reduce power consumption in the TPS54260MDGQTEP?

Eco-mode™ in the TPS54260MDGQTEP reduces no-load quiescent current to 138 μA by entering pulse-skipping mode: the COMP pin is clamped at 500 mV, disabling high-side switching until output droop triggers a regulated burst. This eliminates gate drive and switching losses while maintaining regulation-ideal for always-on subsystems like vehicle telematics or remote sensors.

Can the TPS54260MDGQTEP operate at 100% duty cycle, and under what conditions?

Yes, the TPS54260MDGQTEP supports 100% duty cycle operation as long as the BOOT–PH voltage remains above 2.1 V. This enables regulation down to VIN ≈ VOUT + conduction losses. If BOOT–PH falls below threshold, the high-side MOSFET turns off to allow boot capacitor recharge via the low-side path-critical for low-dropout operation in automotive cold-crank scenarios.

What is the function of the SS/TR pin on the TPS54260MDGQTEP, and how is it used in practice?

The SS/TR pin on the TPS54260MDGQTEP controls slow-start timing and power supply sequencing. A capacitor to ground sets output voltage ramp time; a resistor divider from another rail enables tracking or ordered startup. During faults, the pin discharges to ensure repeatable restart. It overrides the internal 0.8-V reference during startup, allowing precise control of inrush current and system power-up order.