MP9486AGN-Z

Due to market price fluctuations,if you need to purchase or consult the price.You can contact us or emial to us:   sales@allicdata.com

1. DESCRIPTION

The MP9486AGN-Z is a high-voltage, step-down, switching regulator that delivers up to 1A of continuous current to the load. It integrates a high-side, high-voltage, power MOSFET with a current limit of 2.5A, typically. The wide 4.5V to 100V input range accommodates a variety of step-down applications, making it ideal for automotive, industry, and lighting applications. Hysteretic voltage-mode control is employed for very fast response. MPS’s proprietary feedback control scheme minimizes the number of required external components. The switching frequency can be up to 1MHz, allowing for small component size. Thermal shutdown and short-circuit protection (SCP) provide reliable and fault-tolerant operations. A 170µA quiescent current allows the MP9486 to be used in battery-powered applications. The MP9486 is available in a SOIC-8 package with an exposed pad. 

2. FEATURES

    1. Wide 4.5V to 100V Input Range

    2. Hysteretic Control: No Compensation

    3. Up to 1MHz Switching Frequency

    4. PWM Dimming Control Input for LED Application

    5. Short-Circuit Protection (SCP) with Integrated High-Side MOSFET

    6. 170μA Quiescent Current

    7. Thermal Shutdown

    8. Available in a SOIC-8 Package with an Exposed Pad 

3. APPLICATIONS

    1. Scooters, E-Bike Control Power Supplies

    2. Solar Energy Systems

    3. Automotive System Power

    4. Industrial Power Supplies

    5. High-Power LED Drivers 

4. Pin configuration

5. Pin description

6. Dimming function for LED applications

Because the FB reference of MP9486 is Very low, MP9486 is recommended LED driver connected to LED current Sense resistor between FB and GND. In such MP9486 uses DIM for dimming. To achieve dimming, apply a pulse on the DIM. this The high level of the pulse should be >1.5V, and The low level should be <0.5V. Frequency can Up to 20kHz.

7. Output short circuit protection

When VFB is, the output voltage is well regulated About 200mV. If the output is pulled low Over current protection (OCP) or short circuit GND is direct, VFB is low, even if the power The MOSFET is turned on. MP9486 About Low VFB acts as a fault. Power MOSFET If the failure time exceeds 10µs, it will shut down. MP9486 retry operation A delay of about 300µs. Power MOSFET current is also accurate It is detected by the current detection MOSFET. if The current exceeds the current limit, and the IC shuts down Down. This provides additional protection under output short-circuit conditions.

8. Floating drive and bootstrap charging

Floating power MOSFET driver power up Through external bootstrap capacitor. This float The driver has its own under-voltage lockout (UVLO) protect. UVLO rising threshold is 2.2V The threshold is 150mV. The bootstrap capacitor is charged and Internally adjusted to about 5V Bootstrap regulator. If the internal circuit is not enough Voltage, and the bootstrap capacitor is not Fully charged, just add external circuit Used to ensure that the bootstrap voltage is In the normal operating area. refer to External Bootstrap Diode section on page 14 more details.