STMicroelectronics IPS4260LTR

Overview

IPS4260LTR from STMicroelectronics is a quad-channel low-side intelligent power switch IC designed for industrial I/O control, featuring independent 0.5 A per channel (2 A single-channel) current capability, 8–50 V operating range, and integrated non-dissipative cut-off protection programmable via external resistors on ILIM and CoD pins. It drives inductive, resistive, or capacitive loads with built-in catch diodes, thermal shutdown, open-load diagnostics, and compliance with IEC 61131-2 and IEC 61000-4-x immunity standards.

For engineers reviewing the IPS4260LTR datasheet, IPS4260LTR pinout, IPS4260LTR application, or IPS4260LTR equivalent, key selection considerations include per-channel current limiting threshold (programmable 0.5–2 A), cut-off delay timing (60–240 kΩ resistor range), VZ clamp configuration options for fast/slow demagnetization, and diagnostic signal routing via OL/FLT/INx open-drain outputs.

Technical Context

The device integrates four independent N-channel DMOS power switches in low-side configuration, each with dedicated current-sense and thermal monitoring circuitry. Its logic interface accepts 2.0 V high-level inputs and features internal weak pull-downs on INx pins, while diagnostic signals are reported through open-drain outputs with 0.1 V saturation voltage at 5 mA.

Protection architecture includes programmable current limitation (via ILIM), time-limited cut-off (via CoD), junction overtemperature shutdown (160 °C trigger, 20 °C hysteresis), undervoltage lock-out (7.5 V turn-on, 6.5 V turn-off), and dual-wire-break detection (VCC and PGND/SGND disconnection). Clamp diodes on VZ pins support either direct supply-rail connection or TVS-assisted fast decay.

Key Specifications

Pinout & Package

IPS4260LTR is housed in a thermally enhanced HTSSOP20 package with exposed pad (SGND) for improved heat dissipation. The package supports PCB-level thermal management via cold-plate mounting (R_TH(J-C) = 3 °C/W) and natural convection (R_TH(J-A) = 43 °C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad low-side intelligent power switch applications.

Compared with IPS4262LTR, IPS4260LTR delivers 35% lower conduction loss and full inductive load handling; versus STSPIN840, it eliminates firmware dependency for core protections but trades off flexibility in topology and voltage scaling.

Availability

IPS4260LTR is available at Aetrix Electronics and suitable for programmable logic control, industrial PC peripheral I/O, and numerical control machines requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability validation.

Supply support for IPS4260LTR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in intelligent power, microcontrollers, sensors, and automotive ICs with broad industrial certification coverage.

The IPS4260L product line targets robust industrial digital output stages, emphasizing integrated protection, diagnostic transparency, and compliance with IEC 61131-2 and EMC immunity standards for factory automation environments.

FAQ

What is the maximum continuous current per channel under thermal constraints?

The IPS4260LTR supports 0.5 A continuous per channel at 25 °C ambient with natural convection on a 2s2p board (R_TH(J-A) = 43 °C/W). At 125 °C junction temperature, R_DS(ON) rises to 560 mΩ, limiting practical continuous current to ~0.35 A unless heatsinking is enhanced. Parallel channel operation reduces effective R_DS(ON) and thermal load proportionally.

How does the VZ pin configuration affect inductive load decay time?

When VZ pins are shorted directly to V_CC, decay follows the forward voltage (~0.5 V) of internal clamp diodes, resulting in slower current decay. Connecting a TVS between VZ and V_CC (with V_BR > V_CC) or VZ and PGND enables fast decay by clamping at higher voltage, reducing demagnetization time by up to 70% for 10 mH+ loads.

Can the cut-off function be disabled while retaining thermal protection?

Yes-shorting the CoD pin to SGND disables the cut-off timer entirely. In this mode, the channel remains in current-limited conduction until the input goes LOW or junction temperature reaches 160 °C, triggering thermal shutdown. This configuration is used where sustained overload tolerance is preferred over automatic interruption.

What is the minimum external pull-down resistor value for reliable open-load detection?

For open-load detection in OFF state, R_PD must satisfy R_PD < (V_CC − 4.5 V)/20 μA. At 24 V V_CC, this yields R_PD < 975 kΩ. To avoid false triggers with connected loads, R_PD must also exceed R_LOAD × (V_CC − 2.5 V)/2.5 V - e.g., for a 100 Ω load, R_PD > 860 Ω. Typical design uses 10–100 kΩ.