Analog Devices / Maxim Integrated MAX17620 Synchronous Step-Down DC-DC Converter
Analog Devices MAX17620 Synchronous Step-Down DC-DC Converter is a high-frequency, high-efficiency synchronous step-down DC-DC converter. The Analog Devices MAX17620 includes integrated MOSFETs that operate over a 2.7V to 5.5V input voltage range. They support up to 600mA load current and 1.5V to 100% VIN output voltage. The high-frequency operation enables the use of small, low-cost inductors and capacitors.
The MAX17620 features a selectable PWM/skip mode of operation at light loads and operates at a 4MHz fixed frequency in PWM mode. With the skip mode, it improves system efficiency at light loads. PWM mode maintains a constant switching frequency over the entire load. In skip mode, the device draws only 40μA of quiescent current from the supply input. In shutdown mode, the current consumption is reduced to 0.1μA.
The MAX17620 also features a soft-start feature to reduce the inrush current during startup and also incorporates an enable (EN) pin to turn on/off the device. An open-drain PGOOD pin provides a power-good signal to the system upon successfully regulating the output voltage.
The Analog Devices MAX17620 Synchronous Step-Down DC-DC Converter is available in a 2mm x 2mm TDFN-8 package and operates over the -40°C to +125°C temperature range.
Features
- Minimizes external components, reducing total cost
- Synchronous operation for high efficiency and reduced cost
- Internal compensation for stable operation at any output voltage
- All-ceramic capacitor solution
- 4MHz operation
- Only five external components required
- Total solution size is 12mm2 (sum of the component's area)
- Wide 2.7V to 5.5V input voltage range
- Adjustable 1.5V to 100% VIN output voltage range
- Delivers up to 600mA load current
- 100% duty-cycle operation
- +1%/-0.75% reference voltage accuracy
- Reduces power dissipation
- Peak efficiency 91%
- Skip mode for high light-load efficiency
- Shutdown current = 0.1μA
- Operates reliably
- Peak current-limit protection
- Soft-start reduces inrush current during startup
- Built-in output-voltage monitoring (open-drain PGOOD Pin)
- -40°C to +125°C operation
- 2mm x 2mm TDFN-8 package
Applications
- Battery-powered instruments
- Distributed power systems
- Point-of-Load power supplies
- Standard 5V rail supplies
Evaluation Kit
Analog Devices / Maxim Integrated MAX17620EVKIT Evaluation Kit
Fully assembled and tested circuit board that demonstrates the performance of the MAX17620.
Learn More About
Analog Devices / Maxim Integrated Switching Regulators
Highly efficient to support longer battery life, generate less heat, and consume less board space.
Block Diagram
Typical Application Circuit
