2MHz Step-Down Regulator - Maxim Integrated Products
Description
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DataSheet.
co.
kr
19-4321; Rev 3; 12/10
KIT ATION EVALU E L B AVAILA
6A, 2MHz Step-Down Regulator with Integrated Switches
General Description Features
♦ Internal 26mΩ RDS(ON) High-Side and 20mΩ RDS(ON) Low-Side MOSFETs ♦ Continuous 6A Output Current Over Temperature ♦ ±1% Output Accuracy Over Load, Line, and Temperature ♦ Operates from 2.
9V to 5.
5V VIN Supply ♦ Adjustable Output from 0.
6V to (0.
9 x VIN) ♦ Soft-Start Reduces Inrush Supply Current ♦ 500kHz to 2MHz Adjustable Switching Frequency ♦ Compatible with Ceramic, Polymer, and Electrolytic Output Capacitors ♦ Nine Preset and Adjustable Output Voltages 0.
6V, 0.
7V, 0.
8V, 1.
0V, 1.
2V, 1.
5V, 1.
8V, 2.
0V, 2.
5V, and Adjustable ♦ Monotonic Startup for Safe-Start Into Prebiased Outputs ♦ Selectable Forced PWM or Skip Mode for Light Load Efficiency ♦ Overcurrent and Overtemperature Protection ♦ Output Current Sink/Source Capable with Cycleby-Cycle Protection ♦ Open-Drain, Power-Good Output ♦ Lead-Free, 4mm x 4mm, 24-Pin Thin QFN Package
MAX15039
The MAX15039 high-efficiency switching regulator delivers up to 6A load current at output voltages from 0.
6V to 90% of VIN.
The IC operates from 2.
9V to 5.
5V, making it ideal for on-board point-of-load and postregulation applications.
Total output error is less than ±1% over load, line, and temperature ranges.
The MAX15039 features fixed-frequency PWM mode operation with a switching frequency range of 500kHz to 2MHz set by an external resistor.
The MAX15039 provides the option of operating in a skip mode to improve light-load efficiency.
High-frequency operation allows for an all-ceramic capacitor design.
The high operating frequency also allows for small-size external components.
The low-resistance on-chip nMOS switches ensure high efficiency at heavy loads while minimizing critical inductances, making the layout a much simpler task with respect to discrete solutions.
Following a simple layout and footprint ensures first-pass success in new designs.
The MAX15039 comes wit...
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