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MP4689A 4.5-100V, 1A, 1MHz High-Power LED Driver SOIC
MP4689A 4.5-100V, 1A, 1MHz High-Power LED Driver SOIC

MP4689A 4.5-100V, 1A, 1MHz High-Power LED Driver SOIC

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pMPS MP4689A — High-Power LED Driver, 4.5-100V input, 1 A output, SOIC, AEC-Q100./p
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    MP4689A 4.5-100V, 1A, 1MHz High-Power LED Driver SOIC

    The MPS MP4689A is a High-Power LED Driver. It operates from a 4.5 V to 100 V input, is rated for 1 A and switches at 1 MHz. It is supplied in a SOIC package. The part is AEC-Q100 qualified.

    The MP4689A is a high-voltage input, step- down, switching regulator that delivers up to 1A of constant current to high-power LEDs.

    Key Specifications

    Part NumberMP4689A
    FunctionHigh-Power LED Driver
    Input Voltage4.5 V to 100 V
    Current Rating1 A
    Switching Frequency1 MHz
    Quiescent Current170 µA
    InterfacePWM
    Peak Efficiency95%
    PackageSOIC
    QualificationAEC-Q100
    Ordering CodesMP4689A

    Features

    • Wide 4.5V to 100V Operating Input Range
    • No Output Capacitor Required
    • ±3% LED Current Accuracy
    • Hysteretic Control: No Compensation
    • Up to 1MHz Switching Frequency
    • Up to 20kHz Dimming Frequency
    • Dedicated PWM Dimming Control Input
    • Short-Circuit Protection (SCP) with Integrated High-Side MOSFET
    • Thermal Shutdown
    • 200mV Reference Voltage for High Efficiency

    Typical Application Circuit

    MP4689A typical application circuit
    MP4689A typical application circuit, as published in the MPS datasheet.

    Applications

    • High-Power LED Drivers
    • Automotive, Industry, and General Lighting

    Design Notes

    • Channel-to-channel current matching sets backlight uniformity; check the matching spec at the current you will actually run.
    • In boost topologies the OVP threshold must clear the worst-case forward voltage of the longest string, including temperature and binning spread.
    • Keep PWM dimming above 200 Hz to stay clear of visible flicker, and away from the audio band if the product has a speaker.
    • Size the inductor and output capacitor for the string current ripple, not the total LED current.

    Common Questions

    What input voltage does the MP4689A support?
    4.5 V to 100 V. The rated output is 1 A.
    Which package and ordering codes apply to the MP4689A?
    SOIC; order codes include MP4689A.
    What are the defining features of the MP4689A?
    Wide 4.5V to 100V Operating Input Range No Output Capacitor Required
    Is the MP4689A qualified for automotive designs?
    Yes — it is AEC-Q100 qualified. Confirm the grade against the qualification summary in the datasheet before specifying it on a safety-related rail.

    Shenzhen Gaorunxin Technology Co., Ltd

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    Shenzhen Gaorunxin Technology Co., Ltd

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