MAX17551

MAX17551 60V, 50mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter with 22µA No-Load Supply Current General Description The MAX17551 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4V to 60V input. The converter can deliver up to 50mA and generates output voltages from 0.8V up to 0.9 x VIN. The feedback (FB) voltage is accurate to within ±1.75% over -40°C to +125°C. The MAX17551 uses peak-current-mode control and can be operated in pulse-width modulation (PWM) or pulsefrequency modulation (PFM) modes. The device is available in a 10-pin (3mm x 2mm) TDFN and 10-pin (3mm x 3mm) μMAX® packages. Simulation models are available. Applications ●● Industrial Sensors and Process Control ●● High-Voltage LDO Replacement ●● Battery-Powered Equipment ●● HVAC and Building Control µMAX is a registered trademark of Maxim Integrated Products, Inc. Ordering Information appears at end of data sheet. Benefits and Features ●● Reduces External Components and Total Cost No Schottky–Synchronous Internal Compensation for Any Output Voltage Built-In Soft-Start All-ceramic capacitors, Compact Layout ●● Reduces Number of DC-DC Regulators to Stock Wide 4V to 60V Input Adjustable 0.8V to 0.9 x VIN Output 100kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization ●● Reduces Power Dissipation 22µA Quiescent Current Peak Efficiency > 90% PFM Enables Enhanced Light-load Efficie...