STMicroelectronics AEK-POW-LDOV01S

Overview

AEK-POW-LDOV01S from STMicroelectronics is an automotive-grade evaluation board built around the L99VR01STR linear voltage regulator IC, supporting eight fixed output voltages (0.8–5.0 V), 200 mA load current, enable control, reset signaling, and fast output discharge for microcontroller supply and sensor power applications in high-temperature environments up to 150°C.

For engineers reviewing the AEK-POW-LDOV01S datasheet, AEK-POW-LDOV01S pinout, AEK-POW-LDOV01S application, or AEK-POW-LDOV01S equivalent, key selection considerations include configurable LDO output selection via jumper banks (Sel1–Sel3), thermal performance validation at 150°C ambient, diagnostic signal routing (RST, EN, Vo_ADC), and compatibility with SPC5 Studio AutoDevKit ecosystem for automotive embedded development.

Technical Context

The board implements the L99VR01STR as a monolithic automotive LDO with integrated diagnostics including reset generation on undervoltage and thermal shutdown, supported by discrete components for input protection (SMCJ24CA TVS), reverse polarity protection (STTH102AY), and output discharge (BSS138Q MOSFET).

Jumper-selectable resistive dividers (Sel1/Sel2/Sel3) configure the output voltage among eight factory-trimmed values; Vo_ADC provides analog feedback for external monitoring, while EN and RST pins are routed to headers for system-level control and fault reporting.

Key Specifications

Availability

AEK-POW-LDOV01S is available at Aetrix Electronics and suitable for automotive infotainment processors, microcontroller power domains, and sensor interface modules requiring stable component supply, high-temperature operation, and diagnostic-ready power regulation.

Supply support for AEK-POW-LDOV01S 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, designing and manufacturing microcontrollers, power ICs, sensors, and automotive-grade analog devices.

The AEK-POW-LDOV01S belongs to ST's AutoDevKit evaluation platform family, engineered to accelerate validation of automotive power solutions-specifically LDO-based subsystems-with full SPC5 Studio integration and AEC-Q100-compliant reference designs.

FAQ

What is the purpose of the Vo_ADC test point on AEK-POW-LDOV01S?

Vo_ADC is an analog-sense node derived from the L99VR01STR's internal voltage divider, providing a buffered 0.6 V reference proportional to output voltage (Vo = Vo_ADC × 10). It enables real-time monitoring of regulated output without loading the main Vo rail and supports closed-loop diagnostics in SPC5-based systems.

Does AEK-POW-LDOV01S support daisy-chained reset signaling?

No. The RST pin is open-drain and intended for single-point fault reporting to a host microcontroller. It does not support wired-OR daisy chaining; external pull-up is required (10 kΩ typical), and multiple boards must use separate RST lines or external logic for coordinated reset propagation.

Can the board operate without the EN signal asserted?

Yes. When EN is left floating or pulled low, the L99VR01STR enters shutdown mode: output is disabled, quiescent current drops to ≤1 µA, and fast discharge activates. The board includes a 2 kΩ pull-down resistor (R2) on EN to ensure default-off behavior unless actively driven high.

Is the SMCJ24CA-TR TVS diode rated for ISO 7637-2 pulse suppression?

Yes. The SMCJ24CA-TR is a 24 V bidirectional TVS diode with 300 W peak pulse power (10/1000 µs), certified for ISO 7637-2 Level 5a (load dump) and Level 3b (transient pulses) when used with appropriate series impedance, making it suitable for 12 V automotive supply line protection on this board.