Infineon Technologies BTS5576GXUMA1

Overview

BTS5576GXUMA1 from Infineon Technologies is a high-side smart LED driver IC with integrated PWM dimming control, 36 V absolute maximum supply voltage, 5.5 A continuous output current, and built-in overtemperature and short-circuit protection. It drives automotive LED headlamps and daytime running lights (DRL) in AEC-Q100 Grade 1 qualified systems.

For engineers reviewing the BTS5576GXUMA1 datasheet, BTS5576GXUMA1 pinout, BTS5576GXUMA1 application, or BTS5576GXUMA1 equivalent, key selection criteria include channel count, diagnostic accuracy, PWM frequency support up to 25 kHz, and compliance with ISO 26262 ASIL-B requirements for functional safety.

Technical Context

This monolithic high-side switch integrates power MOSFET, charge pump, current sense amplifier, and digital logic for closed-loop LED current regulation. It supports analog and PWM dimming modes, with internal current sensing enabling ±5% LED current accuracy across temperature and supply variations.

The device implements real-time diagnostics including open-load detection via high-impedance monitoring, overcurrent shutdown with auto-restart, and thermal foldback at 150 °C junction temperature. Communication occurs via SPI interface (4-wire, 10 MHz max), supporting readback of status flags and configuration registers.

Key Specifications

Pinout & Package

Package: PG-DSO-36-59 (36-pin exposed pad SOIC variant, thermally enhanced).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side LED driver applications.

Compared with NCV7685 and TPS92692QPWPRQ1, BTS5576GXUMA1 delivers higher single-channel current capability, integrated sensing, and superior thermal performance in compact DSO-36 packaging-making it optimal for space-constrained, high-power automotive front-lighting modules.

Availability

BTS5576GXUMA1 is available at Aetrix Electronics and suitable for automotive lighting design, ADAS illumination subsystems, and industrial LED signage requiring stable component supply and AEC-Q100 qualification.

Supply support for BTS5576GXUMA1 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 manufacturing and R&D centers.

The BTS family targets automotive high-side power switches and LED drivers, designed specifically for functional-safety-compliant lighting and body control modules in modern vehicle architectures.

FAQ

What is the maximum PWM frequency supported by BTS5576GXUMA1?

The device supports PWM dimming up to 25 kHz, enabling flicker-free operation while avoiding audible noise in sensitive automotive environments. This frequency is verified across the full operating temperature range (−40 °C to +150 °C) and supply voltage range (5.5 V to 36 V). The internal gate driver ensures clean edge transitions with t_R/t_F < 300 ns, preserving duty cycle fidelity even at maximum frequency.

Does BTS5576GXUMA1 require an external current sense resistor?

No. BTS5576GXUMA1 integrates a precision current mirror with 1:2000 scaling, providing an analog IS pin output proportional to load current. This eliminates the need for external shunt resistors, reducing power loss, PCB area, and calibration complexity. The internal sense path maintains ±5% accuracy from −40 °C to +125 °C without trimming.

How does the open-load detection work during PWM dimming?

Open-load detection operates during the OFF phase of each PWM cycle using high-impedance monitoring of the OUT pin. The internal circuitry samples voltage at defined intervals after turn-off and compares it to threshold levels. Detection completes within 100 µs and triggers SPI flag reporting without interrupting subsequent PWM cycles, ensuring uninterrupted dimming control.

Is BTS5576GXUMA1 compatible with 5 V logic microcontrollers?

Yes. All digital interface pins (CSN, SCK, SDI, SDO, EN) are 5 V tolerant and operate with standard CMOS logic thresholds. The SPI interface accepts 3.3 V or 5 V I/O levels, and the EN pin has Schmitt-trigger input with hysteresis for noise immunity. No level-shifting circuitry is required when interfacing with common automotive MCUs such as Infineon's AURIX or NXP's S32K series.