2MHz Step-Down Regulator - Maxim Integrated Products
Description
www.
DataSheet.
co.
kr
19-4320; Rev 1; 12/09
KIT ATION EVALU E L B AVAILA
4A, 2MHz Step-Down Regulator with Integrated Switches
General Description Features
o Internal 31mΩ RDS(ON) High-Side and 24mΩ RDS(ON) Low-Side MOSFETs o Continuous 4A Output Current Over Temperature o ±1% Output Accuracy Over Load, Line, and Temperature o Operates from 2.
9V to 5.
5V VIN Supply o Adjustable Output from 0.
6V to (0.
9 x VIN) o Soft-Start Reduces Inrush Supply Current o 500kHz to 2MHz Adjustable Switching Frequency o Compatible with Ceramic, Polymer, and Electrolytic Output Capacitors o 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 o Monotonic Startup for Safe-Start into Prebiased Outputs o Selectable Forced PWM or Skip Mode for Light Load Efficiency o Overcurrent and Overtemperature Protection o Output Current Sink/Source Capable with Cycleby-Cycle Protection o Open-Drain Power-Good Output o Lead-Free, 4mm x 4mm, 24-Pin Thin QFN Package
MAX15038
The MAX15038 high-efficiency switching regulator delivers up to 4A 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 MAX15038 features fixed-frequency PWM mode operation with a switching frequency range of 500kHz to 2MHz set by an external resistor.
The MAX15038 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 MAX15038 comes with...
Similar Datasheet
