CS5172EDR8G

CS5172EDR8G is a switching boost regulator with a high efficiency, 1.5A integrated switch. The flexibility of the design allows the chips to operate in most power supply configurations, including boost, flyback, forward, inverting, and SEPIC. The ICs utilize current mode architecture, which allows excellent load and line regulation, as well as a practical means for limiting current. Combining high frequency operation with a highly integrated regulator circuit results in an extremely compact power supply solution. The circuit design includes provisions for features such as frequency synchronization, shutdown, and feedback controls for either positive or negative voltage regulation.

• Integrated power switch 1.5A guaranteed, wide input range from 2.7 to 30V
• High frequency allows for small components, minimum external components
• Easy external synchronization, built-in overcurrent protection
• Frequency foldback reduces component stress during an overcurrent condition
• Thermal shutdown with hysteresis
• 50A maximum shut down current, 50µA typical source current
• 1.05V typical threshold (reduce VC from 1.5V until switching stops)
• Base operating frequency from 230 to 310KHz (FB = 1V or NFB = -1.9V)
• 0.8V typical switch saturation voltage (ISWITCH = 1.5A)
• SOIC-8 package, operating temperature range from -40°C to 125°C (industrial grade)