Texas Instruments LM2592HVS-5.0/NOPB

Overview

LM2592HVS-5.0/NOPB from Texas Instruments is a monolithic nonsynchronous step-down (buck) DC-DC switching regulator delivering 5.0 V at up to 2 A with ±4% output voltage tolerance, 150-kHz fixed-frequency operation, and input voltage support up to 60 V. It integrates internal frequency compensation, thermal shutdown, current-limit protection, and ON/OFF control-designed for high-efficiency on-card power conversion in industrial and embedded systems.

For engineers reviewing the LM2592HVS-5.0/NOPB datasheet, LM2592HVS-5.0/NOPB pinout, LM2592HVS-5.0/NOPB application, or LM2592HVS-5.0/NOPB equivalent, key selection criteria include its 60-V max input rating, 2-A load capability, 90-μA standby current, ±4% output accuracy over line/load/temperature, and compatibility with standard buck external component sets (Schottky catch diode, 33-μH inductor, 220-μF output capacitor).

Technical Context

The LM2592HVS-5.0/NOPB implements a fixed-frequency, pulse-width modulation (PWM) buck topology with an integrated 2-A N-channel DMOS switch and internal oscillator operating at 150 kHz (±15%). Its feedback loop senses output voltage directly at the FB pin (internally tied to output for fixed versions), enabling regulation without external resistive dividers.

Control logic includes a dedicated ON/OFF pin with 1.3-V typical threshold, supporting shutdown mode (90 μA IQ) and active mode with self-protection via two-stage current limiting (2.3–4 A peak) and thermal shutdown at 150 °C junction temperature. The device operates across −40 °C to +125 °C ambient and supports input voltages from 7 V to 60 V for the 5.0-V variant.

Key Specifications

Pinout & Package

LM2592HVS-5.0/NOPB is packaged in a 5-pin surface-mount DDPAK/TO-263 (KTT) package with 10.18 mm × 8.41 mm body size and exposed thermal pad for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buck regulator applications.

Compared with LM2592HVS-5.0/NOPB, LM2596S-5.0/NOPB offers higher current headroom and identical mechanical fit, while MP2451DT-LF-Z trades input voltage range and enable functionality for higher switching frequency and smaller footprint-making each suitable for distinct trade-offs in thermal, layout, and system control requirements.

Availability

LM2592HVS-5.0/NOPB is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronics, test equipment, and networking hardware requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for LM2592HVS-5.0/NOPB 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 ICs, with leadership in high-reliability industrial and automotive solutions.

The LM2592HV product line delivers robust, easy-to-use buck regulators targeting cost-sensitive, high-input-voltage applications where simplicity, thermal resilience, and minimal external components are prioritized.

FAQ

What is the maximum input voltage supported by the LM2592HVS-5.0/NOPB?

The LM2592HVS-5.0/NOPB supports a maximum input voltage of 60 V, with recommended operating range from 7 V to 60 V for the 5.0-V fixed-output version. Absolute maximum rating is 63 V, but operation above 60 V risks permanent damage. This wide input range makes LM2592HVS-5.0/NOPB suitable for 24-V and 48-V industrial systems, automotive battery rails with load dump, and unregulated off-line supplies.

Does the LM2592HVS-5.0/NOPB require external feedback resistors?

No, the LM2592HVS-5.0/NOPB does not require external feedback resistors. As a fixed 5.0-V output variant, its feedback pin (Pin 4) is internally connected to the output, eliminating the need for an external resistor divider. This simplifies design, improves regulation accuracy (±4% over line/load/temperature), and removes resistor tolerance and drift as error sources-unlike the adjustable LM2592HV-ADJ version which requires two precision resistors.

What package type is used for the LM2592HVS-5.0/NOPB?

The LM2592HVS-5.0/NOPB uses the 5-pin DDPAK/TO-263 (KTT) surface-mount package with a 10.18 mm × 8.41 mm body size and exposed thermal pad. This thermally enhanced package enables efficient heat transfer to the PCB copper plane, supporting full 2-A operation without additional heatsinking under typical ambient conditions-distinguishing it from through-hole TO-220 variants and smaller SOIC packages.

How does the ON/OFF pin function on the LM2592HVS-5.0/NOPB?

The ON/OFF pin (Pin 5) of the LM2592HVS-5.0/NOPB provides logic-level enable control: driving it to ≥2 V places the device in shutdown mode with 90 μA typical quiescent current, while leaving it floating or pulling it to ≤0.6 V enables normal operation. The typical threshold is 1.3 V, and the pin tolerates up to 25 V. This feature supports system-level power sequencing, battery conservation, and fault-initiated shutdown without external circuitry.

What is the typical efficiency of the LM2592HVS-5.0/NOPB at full load?

The LM2592HVS-5.0/NOPB achieves 81% typical efficiency at VIN = 12 V and IOUT = 2 A, per TI's Electrical Characteristics table. Efficiency varies with input voltage and load-reaching ~76% at VIN = 24 V/2 A and improving at lower loads. This performance stems from low RDS(on) of the integrated DMOS switch and optimized 150-kHz switching, offering significantly better thermal behavior than linear regulators delivering the same 5-V/2-A output.