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Infineon OPTIREG™ Switcher Regulators are synchronous step-down regulators that are specially designed for automotive applications. The device has a current capability of 2A or 2.5A, fixed 3.3V or 5V output voltage, and a feedback voltage accuracy of ±1.5% in PWM mode. The integrated power stages, soft-start feature, and integrated compensation network reduce the required amount of external components and thus system costs and board space. The wide input voltage range and a 100% duty cycle operation mode make the device suitable for battery cranking scenarios in automotive applications. The wide switching frequency range allows the selection of appropriate coils and capacitors. The switching frequency can be synchronized to an external clock signal.
Spread spectrum frequency modulation can be activated to improve the EMI performance in PWM operation. The device offers low current consumption in PFM mode at light loads to optimize efficiency. These devices can detect undervoltage and overvoltage conditions of the output voltage and indicates this with the reset output signal. Overcurrent and overload protections avoid excessive current to protect the device during short circuit conditions at the buck converter output. The integrated thermal shutdown feature protects the device from overheating. The enhanced PG-TSDSO-14 exposed pad package offers advantageous thermal performance in the application.
Infineon Power and Sensing Selection Guide
