L99VR02XP

Overview

The L99VR02XP is a dual automotive linear voltage regulator in a PowerSSO-36 package. It provides two independent outputs, each capable of delivering up to 250 mA. The device operates with an input voltage range of 2.15 V to 28 V and withstands 40 V load dump events. Each output supports configurable fixed voltages including 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 2.8 V, 3.3 V, and 5 V via SELx pins. Output voltage accuracy is maintained at ±2% across the operating temperature range of -40 °C to +175 °C. The component features low quiescent current consumption of 1 μA per channel when disabled.

Feature Summary

• Dual output architecture with independent configuration capabilities for flexible power distribution
• Automatic voltage tracking allowing LDO2 to follow LDO1 or external regulators for precise synchronization
• Advanced diagnostic suite including autonomous watchdog, thermal warning, and fast output discharge functions
• Robust protection mechanisms against short circuits, overloads, and over-temperature conditions

Applications

• Microcontroller unit (MCU) power supplies in body modules and junction boxes
• Automotive display drivers and infotainment processors
• Sensor interfaces and navigation system components
• Powertrain control units requiring stable voltage regulation under high thermal stress

Procurement Notes

Verify the specific ordering suffix to confirm packaging type, as the base part number may correspond to tube packaging while tape-and-reel variants exist. Confirm AEC-Q100 qualification status and ensure compatibility with your board's thermal management strategy given the 175 °C maximum junction temperature rating. Cross-reference the exact pinout and SELx configuration requirements during the design phase to avoid integration errors.

Selection Notes

Select this component when designing systems requiring dual isolated rails from a single automotive-grade source. It is suitable for applications needing post-regulation or direct battery connection where load dump immunity is critical. Consider the PowerSSO-36 package size constraints and verify that the required output currents do not exceed the 250 mA limit per channel. Evaluate the need for automatic voltage tracking if powering remote sensors through long cables.

Part Context

This device belongs to the L99VR0 series of automotive linear regulators manufactured by STMicroelectronics. It utilizes BCD9 technology to achieve high performance and reliability standards required for modern vehicle electronics. The series is designed to replace discrete solutions by integrating multiple regulators and diagnostic features into a single compact footprint, simplifying the bill of materials for complex automotive electronic control units.

Replacement Considerations

The L99VR02J serves as a functional alternative within the same family, offering similar electrical characteristics but housed in a smaller PowerSSO-12 package. Verify pin-to-pin compatibility and thermal dissipation capabilities before substitution, as the package change affects heat spreading and mounting requirements on the printed circuit board.