STMicroelectronics AEK-POW-LDOV02J

Overview

AEK-POW-LDOV02J from STMicroelectronics is an automotive-grade evaluation board built around the L99VR02J linear voltage regulator IC, supporting eight fixed output voltages (0.8–5.0 V), 500 mA load current, and integrated diagnostics including watchdog, reset, thermal warning, and programmable short-circuit current limiting. It is designed for prototyping power supplies in microcontroller, sensor, display driver, and infotainment processor applications under harsh temperature conditions (T_j = −40°C to +175°C).

For engineers reviewing the AEK-POW-LDOV02J datasheet, AEK-POW-LDOV02J pinout, AEK-POW-LDOV02J application, or AEK-POW-LDOV02J equivalent, this board enables rapid validation of L99VR02J-based power architectures-particularly where automotive-grade thermal resilience, configurable output selection via SEL1–SEL3 jumpers, and diagnostic signal routing (RST, Wi, TW, Vo_ADC) are critical.

Technical Context

The AEK-POW-LDOV02J implements a hardware-configurable interface to the L99VR02J's voltage selection logic using three jumper-selectable inputs (SEL1/SEL2/SEL3), mapping directly to the eight supported output voltages per the truth table in DB4870. All diagnostic signals-including Reset (RST), Watchdog input (Wi), Thermal Warning (TW), and output voltage ADC feedback (Vo_ADC)-are routed to accessible test points and headers.

Power delivery includes input filtering (C1, C2, C3, C4, C5, C6), reverse-polarity protection (D1), transient voltage suppression (D3), and fast output discharge via Q1 (BSS138Q). The board accepts 5–28 V DC input (Vs) and provides regulated output (Vo) with selectable voltage and real-time monitoring capability.

Key Specifications

Availability

AEK-POW-LDOV02J is available at Aetrix Electronics and suitable for automotive microcontroller power supply validation, infotainment processor reference design, and sensor subsystem power architecture testing requiring stable component supply, traceable sourcing, and long-term lifecycle support.

Supply support for AEK-POW-LDOV02J 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 delivering intelligent power, analog, MEMS, and microcontroller solutions for automotive, industrial, and consumer applications.

The AEK-POW-LDOV02J belongs to ST's AutoDevKit™ evaluation platform family, engineered to accelerate development of automotive power systems based on ST's AEC-Q100 qualified analog and power ICs like the L99VR02J.

FAQ

What is the purpose of the SEL1–SEL3 jumpers on the AEK-POW-LDOV02J?

The SEL1–SEL3 jumpers configure the output voltage of the underlying L99VR02J IC by setting its binary address inputs. Each jumper position (0 or 1) corresponds to one bit in a 3-bit code that selects among eight fixed output voltages (0.8 V to 5.0 V) as defined in the L99VR02J datasheet truth table. No firmware or software configuration is required.

Does the AEK-POW-LDOV02J provide access to all L99VR02J diagnostic signals?

Yes - RST (reset output), Wi (watchdog input), TW (thermal warning output), and Vo_ADC (output voltage sense node) are all routed to dedicated test points and the CN1 header. These signals enable real-time monitoring, fault injection, and integration with host controllers during system-level validation.

Can the AEK-POW-LDOV02J be used with SPC5 Studio development tools?

Yes - the board is supported by the STSW-AUTODEVKIT plugin for SPC5 Studio, enabling automatic resource configuration, register initialization code generation, and diagnostic signal handling for SPC5 microcontrollers interfacing with the L99VR02J's status outputs.

What input protection features are implemented on the board?

The board includes D1 (STTH102AY 1000 V ultrafast rectifier) for reverse-polarity protection, D3 (SMCJ24CA-TR 24 V TVS diode) for transient voltage suppression, and input bulk capacitance (C1 = 10 µF) with ceramic bypassing (C2–C6) to ensure stable operation during automotive load-dump and cold-crank events.