DRV8244SQRYJRQ1

Overview

The DRV8244SQRYJRQ1 is an automotive-grade H-bridge driver designed for brushed DC motors and solenoids. It integrates N-channel H-bridges, a charge pump, high-side current sensing, and protection circuits. The device supports a supply voltage range of 4.5 V to 35 V with an absolute maximum rating of 40 V. It delivers a maximum output current of 21 A and operates at PWM frequencies up to 25 kHz. The component is available in a VQFN-HR package with a total on-resistance (R_ON_LS + R_ON_HS) of 47 mΩ. It features low quiescent current of 1 μA typical at +25°C in shutdown mode.

Feature Summary

• Integrated high-side current detection and proportional load current output via the IPROPI pin without requiring external shunt resistors.
• Configurable control modes supporting single full-bridge or two independent half-bridge operations using PWM or PH/EN inputs.
• Comprehensive diagnostic capabilities including open-load and short-circuit detection in both on and off states, monitored via the nFAULT pin.
• Advanced EMI management through configurable slew rates and spread-spectrum clocking mechanisms.

Applications

• Automotive door modules, wiper systems, trunk actuators, and seat adjustment mechanisms
• Body Control Modules (BCM) and steering systems
• Gasoline engine management systems
• On-board charger applications

Procurement Notes

Verify the specific suffix 'SQRYJRQ1' to confirm the VQFN-HR package variant and SPI interface configuration. Ensure compatibility with AEC-Q100 Grade 1 requirements for the -40°C to +125°C operating temperature range. Confirm logic input voltage levels match the system design, as the device supports both 3.3 V and 5 V logic interfaces. Validate that the selected variant aligns with the required functional safety documentation needs.

Selection Notes

Select this component when designing automotive motor control systems requiring integrated current sensing and robust diagnostic features. The VQFN-HR package offers lower on-resistance compared to HVSSOP options, making it suitable for higher current applications up to 21 A. Consider the SPI interface variants if flexible configuration and detailed fault observability are required over hard-wired controls. Ensure thermal management strategies account for the power dissipation characteristics of the BiCMOS process technology.

Part Context

This part belongs to the DRV8244-Q1 family of automotive H-bridge drivers from Texas Instruments. The family includes variants with different packages and interface types, such as HW (H), SPI (S), and SPI (P). The SQRYJRQ1 designation specifically identifies the version utilizing the VQFN-HR package and SPI interface with internally generated logic power. These devices share common core functionalities but differ in packaging, resistance values, and control interface implementations.

Replacement Considerations

Direct substitutes within the same family include DRV8244HQRYJRQ1 and DRV8244PQDGQRQ1, though package and interface differences must be evaluated. Cross-package replacements like DRV8244SQDGQRQ1 require PCB layout adjustments due to form factor changes. Verify pin-to-pin compatibility and electrical parameter alignment before substitution.

FAQ

What is the difference between the SPI (S) and SPI (P) interface variants?

The SPI (S) variant generates its internal logic power supply, whereas the SPI (P) variant requires an externally provided logic power supply. Both offer similar configuration and diagnostic flexibility.

How does the device handle fault conditions?

Fault conditions such as overcurrent, overtemperature, or load diagnostics issues are indicated via the nFAULT pin. The device supports configurable fault reactions, allowing users to select between latch-off or retry behaviors.

Is external current sensing required for this driver?

No, the DRV8244SQRYJRQ1 integrates high-side current detection and provides a proportional load current output on the IPROPI pin, eliminating the need for external shunt resistors.