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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 550MA 6QFN
- Series：-
- Mfr：Monolithic Power Systems Inc.
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：6V
- Voltage - Supply (Max)：55V
- Voltage - Output：-
- Current - Output / Channel：550mA
- Frequency：600kHz
- Dimming：Analog, PWM
- Applications：Backlight, Lighting, Signage
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：6-VDFN Exposed Pad
- Supplier Device Package：6-QFN (3x3)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The MPQ2489DQ-AEC1-LF-P is an automotive-grade monolithic LED driver IC from Monolithic Power Systems. It utilizes a buck topology to drive white LEDs with a maximum output current of 1 A. The device supports an input voltage range of 6 V to 55 V and operates at a fixed switching frequency of 600 kHz. It features PWM dimming capabilities and open LED protection. Qualified under AEC-Q100 standards, it functions within a temperature range of -40°C to +125°C. The component is housed in a QFN-6 package suitable for surface mount technology.
Feature Summary
- Automotive qualification compliant with AEC-Q100 standards for reliability
- Integrated PWM dimming control for precise brightness adjustment
- Built-in open LED protection circuitry for system safety
Applications
- White LED backlighting systems
- Automotive interior lighting applications
- General LED illumination circuits requiring buck conversion
Procurement Notes
Verify the specific suffix 'P' against official MPS documentation to confirm reel packaging specifications. Ensure the part number matches the AEC-Q100 qualified variant intended for automotive use. Cross-reference the QFN-6 package dimensions with design requirements. Confirm that the 55 V maximum input rating aligns with the target power supply architecture before procurement.
Selection Notes
Select this component when designing for automotive environments requiring AEC-Q100 certification. The 600 kHz frequency allows for smaller passive components compared to lower-frequency alternatives. The 1 A output current capability suits single-string or parallel LED configurations. Consider the 55 V input limit when selecting input capacitors and ensure thermal management meets the 2.5 W dissipation requirement in the QFN-6 package.
Part Context
This part belongs to the MPQ2489 series of LED drivers designed for high-reliability applications. It shares functional similarities with the MP2489 but includes automotive-specific qualifications. The 'Q' prefix typically denotes enhanced automotive grade variants within the manufacturer's portfolio. It serves as a specialized solution for regulated LED current driving in harsh operating conditions.
Replacement Considerations
MPQ2489DQ-AEC1-LF-Z is a verified substitute with identical electrical characteristics and automotive qualification, differing only in tape-and-reel packaging format.
