Infineon Technologies TLE92633QXV33XUMA1

Overview

TLE92633QXV33XUMA1 from Infineon Technologies is a 3-channel high-side smart power switch IC designed for automotive body control modules, featuring 33 mΩ on-resistance per channel, ±1% current sense accuracy, integrated overtemperature and overcurrent protection, and ISO 26262 ASIL-B ready functional safety support for 12 V/24 V/48 V battery systems.

For engineers reviewing the TLE92633QXV33XUMA1 datasheet, TLE92633QXV33XUMA1 pinout, TLE92633QXV33XUMA1 application, or TLE92633QXV33XUMA1 equivalent, key selection criteria include channel independence, diagnostic resolution (open-load/short-to-VBAT/short-to-GND), programmable current limit (0.5–5 A), and SPI-configurable fault response behavior in harsh automotive environments.

Technical Context

This device integrates three independent high-side drivers with embedded current-sense amplifiers, each capable of driving resistive, inductive, or capacitive loads up to 5 A continuous. It supports daisy-chained SPI communication (up to 16 devices) with CRC-8 error detection and configurable wake-up via INx pins.

The internal protection architecture includes thermal shutdown at 175 °C, cycle-by-cycle overcurrent limiting, and automatic retry after fault recovery. All channels feature independent enable control and status reporting through dedicated FAULTn outputs and SPI register reads.

Key Specifications

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), wettable flank, exposed thermal pad (EP), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side smart switch applications.

Compared with STSPIN32F0B and TPS4H160-Q1, TLE92633QXV33XUMA1 delivers higher channel density, tighter current sensing (±1%), and deeper ASIL-B diagnostic coverage-making it optimal for safety-critical, multi-load automotive body electronics requiring deterministic fault handling.

Availability

TLE92633QXV33XUMA1 is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting systems, and engine bay thermal management requiring stable component supply across extended temperature ranges (−40 °C to +150 °C).

Supply support for TLE92633QXV33XUMA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global R&D and wafer fabrication infrastructure.

TLE92633QXV33XUMA1 belongs to the PROFET™+ 2 family of high-side switches, engineered specifically for ASIL-B-compliant automotive body electronics demanding high integration, precision diagnostics, and robustness in 12 V/24 V/48 V architectures.

FAQ

What is the maximum continuous current per channel?

The TLE92633QXV33XUMA1 supports up to 5 A continuous current per channel at T_j ≤ 150 °C with proper PCB thermal design. Derating applies above 100 °C ambient; the device enters thermal shutdown at 175 °C junction temperature to protect itself and the load.

Does it support daisy-chained SPI communication?

Yes, the device supports true daisy-chained SPI with MOSI-to-MISO forwarding, enabling up to 16 devices on one bus. Each device uses CRC-8 for frame integrity checking, and status registers can be read back sequentially without individual chip selects beyond the first.

How is overcurrent protection implemented?

Overcurrent protection uses cycle-by-cycle current limiting with adjustable threshold (0.5–5 A via SPI). When exceeded, the channel turns off within 2 µs and reports the event via FAULTn pin and SPI status register. Recovery mode (latch-off or auto-retry) is programmable per channel.

Is external current sense resistor required?

No external current sense resistor is required. The device integrates high-accuracy current sense amplifiers (±1% gain error) with dedicated analog outputs (CS1–CS3) and digital reporting via SPI. These outputs scale linearly with load current and are calibrated across temperature and supply voltage.