MP2459GJ-Z

MP2459GJ-Z is a step-down, switch-mode converter with a built-in power MOSFET. It achieves a 0.5A peak-output current over a wide input supply range with excellent load and line regulation. Current-mode operation provides a fast transient response and eases loop stabilization. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown. The MP2459 requires a minimal number of readily-available external components. Typical applications include power meters, distributed power systems, battery chargers, pre-regulators for linear regulators, and WLED drivers.

• 1ohm internal power MOSFET
• Stable with low-ESR ceramic output capacitors
• Up to 90% efficiency
• Thermal shutdown, cycle-by-cycle over-current protection
• Wide 4.5V-to-55V operating input range
• Feedback voltage is 0.832V max at 4.5V = VIN = 55V, VIN = 12V, TA = +25°C
• Feedback current is 0.1µA max at VFB = 0.85V, VIN = 12V, TA = +25°C
• Oscillator frequency is 580kHz max at VFB = 0.6V, VIN = 12V, TA = +25°C
• TSOT23-6 package
• Operating junction temperature range from -40°C to +125°C