L99MOD54XPTR

Specialized ICS Overview

The L99MOD54XPTR is a microcontroller-driven multi-output driver for automotive applications, housed in a PowerSSO-36 EPD package. It integrates three half-bridges and three high-side drivers to control up to two DC motors and three grounded resistive loads. The device features an SPI interface for mode control and diagnostics. Electrical specifications include a supply voltage range of 7 V to 28 V, with output current limitations of ±0.75 A for half-bridges, ±1.5 A (low RDSon) or ±0.35 A (high RDSon) for configurable high-side drivers, and ±6 A for the dedicated high-current high-side driver. Standby current is less than 6 μA.

Specialized ICS Feature Summary

• Three half-bridges (RDSon = 1600 mΩ) and three high-side drivers (RDSon = 100 mΩ or 500/1800 mΩ).
• Integrated SPI interface for forward, reverse, brake, and high-impedance control.
• Comprehensive diagnostics including open-load, overload, short-circuit, and thermal shutdown protection.
• Programmable soft start function for handling high inrush currents.

Specialized ICS Applications

• Automotive actuator drivers requiring multiple motor control.
• Control of bulbs, LEDs, or sensors with protected supply configurations.
• Camera modules and other automotive peripheral loads.

Specialized ICS Procurement Notes

Verify the order code L99MOD54XPTR corresponds to the Tape and Reel packing format as specified in the device summary table. Confirm that the PowerSSO-36 EPD package dimensions match the design requirements. Ensure the component meets AEC-Q100 qualification standards for the intended automotive environment.

Specialized ICS Selection Notes

Select this component when driving mixed loads such as DC motors and resistive elements like LEDs or heaters. The configurable high-side drivers allow optimization between low on-resistance for high current or higher resistance for lower current applications. Ensure the PCB layout supports the required thermal dissipation for the PowerSSO-36 package under maximum load conditions.

Specialized ICS Part Context

The L99MOD54XPTR belongs to the L99MOD5xXP series of multi-output drivers from STMicroelectronics. It is designed specifically for automotive environments, offering high integration by combining power switching and diagnostic capabilities in a single microcontroller-driven IC. The 'TR' suffix indicates the reel packaging variant.

Specialized ICS Replacement Considerations

Consult the official datasheet for direct pin-compatible substitutes within the L99MOD family. Verify electrical parameters and package compatibility before substituting with other manufacturers' parts.

Specialized ICS FAQ

How is the standby mode activated?

Standby mode is activated by clearing bit 23 of the input data register, which switches all inputs and outputs to high impedance.

What is the purpose of the CP pin?

The CP pin provides a charge pump output used to drive the gate of an external n-channel power MOSFET for reverse polarity protection.

Can the L99MOD54XP drive inductive loads directly?

Half-bridge outputs (OUT1-OUT3) can drive inductive loads without external diodes due to internal reverse diodes. High-side drivers (OUT4-OUT6) require external free-wheeling diodes for inductive loads.