MAX15087
High-Efficiency, 2A Step-Down Switching Regulator with Tracking Feature
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Smallest, Most Efficient 2A Solution in the Market with Tracking Input
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Features
- Internal 30mΩ (typ) RDS(ON) High-Side and 18mΩ (typ) Low-Side MOSFETs at 5V
- Continuous 2A Output Current Over Temperature
- 96% Efficiency with 3.3V Output at 2A
- ±1% Output Voltage Accuracy Over Load, Line, and Temperature
- Operates from 2.7V to 5.5V Supply
- Cycle-by-Cycle Overcurrent Protection
- Adjustable Output from 0.6V to Up to 0.94 x VIN
- Factory-Trimmed, 1MHz Switching Frequency
- Stable with Low-ESR Ceramic Output Capacitors
- Safe-Startup Into Prebiased Output
- External Reference Input for Tracking During Power-Up/Power-Down
- Skip-Mode Functionality
- Enable Input/Power-Good Output
- Fully Protected Against Overcurrent and Overtemperature
- Input Undervoltage Lockout
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The MAX15087 high-efficiency, current-mode, synchronous step-down switching regulator with integrated power switches delivers up to 2A of output current. The device operates from 2.7V to 5.5V and provides an output voltage from 0.6V up to 94% of the input voltage, making the device ideal for distributed power systems, portable devices, and preregulation applications.
The MAX15087 uses a current-mode control architecture with a high gain transconductance error amplifier. The current-mode control architecture facilitates easy compensation design and ensures cycle-by-cycle current limit with fast response to line and load transients.
The MAX15087 offers selectable skip-mode functionality to reduce current consumption and achieve a higher efficiency at light output load. The low RDS(ON) integrated switches ensure high efficiency at heavy loads while minimizing critical inductances, making the layout design a much simpler task with respect to discrete solutions. Using a simple layout and footprint assures first-pass success in new designs.
The MAX15087 features a 1MHz, factory-trimmed, fixed-frequency PWM mode operation. The high switching frequency, along with the PWM current-mode architecture, allows for a compact, all-ceramic capacitor design.
The MAX15087 starts up safely into a PREBIAS output. A PGOOD open-drain output can be used as an interrupt and for power sequencing.
The MAX15087 is available in a 9-bump (3 x 3 array), 1.5mm x 1.5mm WLP package and is specified over the -40°C to +85°C temperature range.
Applications
- Distributed Power Systems
- IP Phones
- Notebook Power
- Portable Devices
- Preregulators for Linear Regulators
- Server Power
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MAX15087
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