Texas Instruments TPS54262MPWPTEP

Overview

TPS54262MPWPTEP from Texas Instruments is a radiation-hardened, 60-V input, 2-A asynchronous step-down DC-DC converter with integrated NMOS FET, voltage supervisor, and low-power mode. It delivers regulated output from 0.9 V to 18 V, features 50 µA typical quiescent current in LPM, 200 kHz–2.2 MHz programmable switching frequency, and operates across –55°C to 125°C for automotive telematics and defense power systems.

For engineers reviewing the TPS54262MPWPTEP datasheet, TPS54262MPWPTEP pinout, TPS54262MPWPTEP application, or TPS54262MPWPTEP equivalent, key selection criteria include its 60-V transient tolerance, programmable reset delay via Cdly capacitor, slew-rate-controlled internal switch, external compensation capability, and HTSSOP-20 PowerPAD™ package optimized for thermal performance in harsh environments.

Technical Context

The TPS54262MPWPTEP implements voltage-mode control with input voltage feed-forward to improve line transient regulation. Its cycle-by-cycle current limiting and thermal shutdown protect against overload and overtemperature conditions, while the open-drain RST output provides programmable POR delay and fast negative transient filtering.

It supports dual operating modes: normal PWM mode (up to 2.2 MHz) and low-power pulse-skipping mode under light loads. The device uses external resistors on RT and Rslew pins to set switching frequency and gate drive slew rate, respectively, and external resistor dividers on OV_TH and RST_TH pins to configure overvoltage and undervoltage thresholds referenced to the 0.8 V internal reference.

Key Specifications

Pinout & Package

The TPS54262MPWPTEP is housed in a thermally enhanced 20-pin HTSSOP (PWP) package measuring 6.50 mm × 4.40 mm, with an exposed PowerPAD™ thermal pad requiring solder connection to PCB ground plane for optimal heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM5164QPWPRQ1 and TPS543620RJER, the TPS54262MPWPTEP uniquely integrates analog voltage supervision with capacitor-programmable reset delay and overvoltage shutdown - eliminating external components in safety-compliant automotive and defense power designs where deterministic analog behavior is mandated.

Availability

TPS54262MPWPTEP is available at Aetrix Electronics and suitable for automotive telematics, avionics power management, defense vehicle electronics, and industrial battery-powered sensors requiring stable component supply across extended temperature and radiation-hardened environments.

Supply support for TPS54262MPWPTEP 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 automotive and aerospace qualification experience.

The TPS54262MPWPTEP belongs to TI's Enhanced Product (EP) family - engineered for high-reliability applications including defense, aerospace, and medical systems, with controlled baseline, extended temperature support, and long-term product lifecycle assurance.

FAQ

What is the maximum input voltage transient the TPS54262MPWPTEP can withstand?

The TPS54262MPWPTEP is rated to withstand input voltage transients up to 60 V, while maintaining continuous operation from 3.6 V to 48 V. This capability meets ISO 16750-2 automotive load-dump requirements and supports use in 24 V commercial vehicle and defense platform power systems. Absolute maximum rating for VIN is 60 V, and exceeding this may cause permanent damage.

How does the Cdly pin control reset delay timing in the TPS54262MPWPTEP?

The Cdly pin on the TPS54262MPWPTEP sources a constant 1.4–3 µA current into an external capacitor to ground, generating a linear voltage ramp. When this voltage reaches the internal threshold, the RST output is released high after a fixed internal delay. The resulting POR delay is 3.2–7 ms per nanofarad of capacitance - enabling precise, repeatable power-on sequencing without external timers.

Can the TPS54262MPWPTEP operate in synchronization with an external clock signal?

Yes, the TPS54262MPWPTEP supports external clock synchronization via the SYNC pin (pin 3). An external clock signal between 180 kHz and 2.2 MHz - constrained by the relation 180 kHz < fsw < fext < 2 × fsw - overrides the internal oscillator. Synchronization occurs within 32 µs if the external clock stops, reverting to the RT-set frequency.

What thermal performance can be expected from the TPS54262MPWPTEP in a standard PCB layout?

In a standard 4-layer PCB with 2 oz copper and the exposed PowerPAD™ soldered to a 1-in² thermal pad, the TPS54262MPWPTEP achieves a junction-to-board thermal resistance (RθJB) of 8.7°C/W. At 2-A load and 12-V input, typical power dissipation is ~0.5 W, resulting in ~4.4°C junction-to-board rise - well within the –55°C to 125°C operating range when ambient is ≤120°C.

Does the TPS54262MPWPTEP support both overvoltage and undervoltage monitoring on the same output rail?

Yes, the TPS54262MPWPTEP provides independent analog monitoring: OV_TH pin triggers internal switch shutdown upon overvoltage, while RST_TH pin asserts the open-drain RST output low during undervoltage. Both thresholds reference the same 0.8 V internal comparator and are set using separate external resistor dividers - enabling simultaneous fault detection without additional ICs.