MP24833-AGN-Z Monolithic Power Systems Inc.

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1. DESCRIPTION

The MP24833-AGN-Z is a 55V, 3A, white LED driver suitable for step-down, inverting step-up/stepdown, and step-up applications. The MP24833- A achieves 3A of output current with excellent load and line regulation over a wide input supply range. Current mode operation provides a fast transient response and eases loop stabilization. Full protection features include thermal shutdown, cycle-by-cycle peak current limiting, open-string protection, and output short-circuit protection (SCP). The MP24833-A incorporates both DC and PWM dimming into a single control pin. The separate input reference ground pin allows for direct enable and/or dimming control for a positive-to-negative power conversion. The MP24833-A requires a minimal number of readily available, standard, external components

2. FEATURES

    1. 3A Maximum Output Current

    2. Unique Step-Up/Step-Down Operation (Buck-Boost Mode)

    3. Wide 4.5V-to-55V Operating Input Range for Step-Down Applications (Buck Mode)

    4. 0.15Ω Internal Power MOSFET Switch

    5. Fixed 210kHz Switching Frequency

    6. Analog and PWM Dimming

    7. 0.2V Reference Voltage

    8. 6μA Shutdown Mode

    9. No Minimum Number of LEDs Required

  10. Stable with Low ESR Output Ceramic Capacitors

  11. Cycle-by-Cycle Over-Current Protection (OCP)

  12. Thermal Shutdown Protection

  13. Open-String Protection

  14. Output Short-Circuit Protection (SCP)

  15. Available in a SOIC-8 EP Package

3. APPLICATIONS

    1. General LED Illumination

    2. LCD Backlight Panels

    3. Notebook Computers

    4. Automotive Internal Lighting

    5. Portable Multimedia Players

    6. Portable GPS Devices 

4. PACKAGE REFERENCE

5. PACKAGE INFORMATION