ST1S41IPHR Fixed-Frequency PWM Synchronous Step-Down Demonstration Board

The STM-STEVAL-ISA107V1 is a product evaluation board to aid in testing and designing with the ST1S41 in an SO-8 ePad package. The application is an internally-compensated 850 kHz fixed-frequency PWM synchronous step-down converter. The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN (100% duty-cycle). The ST1S41 integrates a 95 mO high side switch and a 69 mO low side synchronous rectifier allowing very high efficiency with very low output voltages. The peak current mode control with internal compensation delivers very compact solution with a minimum component count. 4.0 V to 18 V input voltage Output voltage adjustable from 0.8 V 850 kHz switching frequency Internal soft-start Integrated 95 mO and 69 mO Power MOSFETs All ceramic capacitor Enable Cycle by cycle current limiting Current fold back short circuit protection RoHS compliant