Analog Devices / Maxim Integrated MAX15106x Step-Down Switching Regulators
Analog Devices MAX15106x Step-Down Switching Regulators are high-efficiency, current-mode, synchronous step-down switching regulators with integrated power switches that deliver up to 6A of output current. The regulators operate from 2.7V to 5.5V and provide an output voltage from 0.6V up to 95% of the input voltage, making the devices ideal for distributed power systems, portable devices, and preregulation applications. The ICs utilize 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 limits with fast response to line and load transients.
The low RDS(ON) integrated switches ensure high efficiency at heavy loads while minimizing critical inductance, making the layout design a much simpler task concerning discrete solutions. The ICs’ simple layout and footprint assures first-pass success in new designs. The regulator features 0.9MHz (MAX15106A), 1.0MHz (MAX15106B), and 1.1MHz (MAX15106C) factory-trimmed fixed frequency PWM-mode operation. The high-switching frequency and the PWM current-mode architecture allow for a compact, all-ceramic capacitor design.
The Analog Devices MAX15106x features a capacitor-programmable soft-start to reduce input inrush current. Internal control circuitry ensures safe startup into a pre-biased output. Power sequencing is controlled with the enable input and power-good output. The IC is available in a 20-bump (4 x 5 array), 2.5mm x 2mm WLP package and is fully specified over the -40°C to +105°C temperature range.
Features
- Continuous 6A output current
- Efficiency up to 96%
- ±1% accuracy over load, line, and temperature
- Operates from a 2.7V to 5.5V supply
- Adjustable output from 0.6V to 0.95 × VIN
- Programmable soft-start
- Safe startup into a pre-biased output
- External reference input
- 0.9MHz, 1.0MHz, and 1.1MHz switching frequency options
- Stable with low-ESR ceramic output capacitors
- Forced PWM mode
- Enable input and Power-Good output for power-supply sequencing
- Cycle-by-cycle overcurrent protection
- Fully protected features against overcurrent and overtemperature
- Input undervoltage lockout
- 20-bump (4 x 5 array), 2.5mm x 2mm, WLP package
Applications
- Distributed power systems
- DDR memory
- Base stations
- Portable devices
- Notebook power
- Server power
Simplified Block Diagram
Related Development Tools
Analog Devices / Maxim Integrated MAX15106xEVKIT Regulator Evaluation Kits
Helps evaluate the MAX15106A / MAX15106B / MAX15106C high-efficiency, 6A, step-down regulators.