STMicroelectronics SPSB0813-TR

Overview

SPSB0813-TR from STMicroelectronics is an AEC-Q100 qualified automotive power management IC integrating dual LDO regulators (V1 = 3.3 V, V2 = 3.3 V tracker), four 0.14 A high-side drivers, LIN transceiver (ISO 17987-4/2016), CAN-FD transceiver (ISO 11898-2/2016, SAE J2284), programmable watchdog, reset generator, and contact monitoring (WU1/WU2) - deployed in body control modules for low-quiescent-current (<15 µA standby) power sequencing and fail-safe diagnostics.

For engineers reviewing the SPSB0813-TR datasheet, SPSB0813-TR pinout, SPSB0813-TR application, or SPSB0813-TR equivalent, this device supports SPI-controlled voltage regulation, open-load/overcurrent diagnosis per HS driver, thermal warning/shutdown (140 °C / 165–185 °C), and ASIL-aware safety features including DIAGN assertion and current monitor (CM) output - critical for automotive ECU power architecture validation.

Technical Context

The SPSB0813-TR implements two independent LDOs: V1 delivers fixed 3.3 V @ 250 mA with overvoltage protection and thermal shutdown coordination; V2 operates as a ±20 mV tracking regulator of V1, configurable via SPI CR2 register bit V2_TKR, supporting 3.3 V output with 100 mA capability and reverse-bias protection.

Its communication stack includes a LIN transceiver compliant with ISO 17987-4/2016 and a CAN-FD physical layer compliant with ISO 11898-2/2016 and SAE J2284, both featuring local/bus failure diagnosis, while four high-side drivers integrate internal 10-bit PWM timers, R_ON = 7 Ω, and per-channel current monitoring via multiplexed CM pin.

Key Specifications

Pinout & Package

SPSB0813-TR uses QFN32L Epad (5.0 × 5.0 × 1.0 mm) package with exposed thermal pad; pin layout optimized for automotive PCB layout with separate signal (SGND) and power (PGND) grounds, VSREG/V1/V2 supply isolation, and dedicated diagnostic outputs (DIAGN, CM, NINT).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive power management applications.

Compared with SPSB0815-TR, the SPSB0813-TR provides tighter 3.3 V rail synchronization via V2 tracking - essential for noise-sensitive sensors - while TLE9261-2QX trades CAN-FD and advanced diagnostics for lower gate count and cost in LIN-only applications.

Availability

SPSB0813-TR is available at Aetrix Electronics and suitable for body control modules, telematic control units, passive keyless entry systems, and seat control modules requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.

Supply support for SPSB0813-TR 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 specializing in automotive, industrial, and power management solutions, with deep expertise in functional safety and ASIL-compliant design.

The SPSB081 product line delivers integrated power management ICs for automotive ECUs, combining LDO regulation, high-side driving, and LIN/CAN-FD PHYs to reduce system complexity and improve diagnostic coverage in ASIL-B–capable architectures.

FAQ

What is the maximum continuous output current per high-side driver?

Each of the four high-side drivers (OUT1–OUT4) supports a maximum continuous output current of 0.14 A at ambient temperatures up to 125 °C, with R_ON = 7 Ω and integrated overcurrent protection that disables the channel upon fault detection. Current derating applies above 125 °C per thermal data in DS14048 Rev 3.

How does the V2 voltage tracker function differ from a standard LDO?

V2 operates as a ±20 mV tracking regulator of V1 when V2_TKR = 1, meaning its output precisely follows V1's 3.3 V rail without requiring external feedback components. Unlike a standalone LDO, it cannot operate independently at different voltages - its tracking behavior is enabled only when V1 and V2 share identical output levels (3.3 V for SPSB0813-TR).

Is the LIN transceiver compatible with standard ISO 17987-4/2016 implementations?

Yes - the integrated LIN transceiver fully complies with ISO 17987-4/2016, supporting standard baud rates (up to 20 kbps), bus fault detection (short-to-battery/ground), and dominant timeout protection. It uses dedicated RxD_L and TxD_L pins and requires no external components beyond a single pull-up resistor on the LIN bus line.

What safety mechanisms are implemented for thermal management?

The device embeds three-tier thermal protection: warning flag activation at 140–160 °C (TW_ON), first-stage shutdown at 165–185 °C (TSD1) disabling all outputs except V1, and second-stage shutdown at 175–195 °C (TSD2) deactivating V1 and all wake-up sources. Hysteresis ≥5 °C prevents oscillation during recovery, and status bits are latched in SR1/SR2 for SPI readback.