IFX81481ELV 10 A synchronous DC/DC Step-Down Controller Data Sheet Rev. 1.0, 2013-09-02 Standard Power 10 A synchronous DC/DC Step-Down Controller IFX81481ELV 1Overview 10 A synchronous step down Controller Current limitation adjustable with Shunt resistor or Rdson Adjustable output voltage 2% output voltage tolerance External power transistors Integrated bootstrap diode PWM regulation Very Low Dropout Operation: max Duty Cycle higher than 99% Input voltage range from 4.75V to 45V Adjustable switching frequency from 100 to 700 kHz PG-SSOP-14 Synchronization input Very low shutdown current consumption (<2A) Soft-start function Input undervoltage lockout Suited for industrial applications: T = -40C to +125C j Green Product (RoHS compliant) The IFX81481ELV is not qualified and manufactured according to the requirements of Infineon Technologies with regards to automotive and/or transportation applications. For automotive applications please refer to the Infineon TLx (TLE, TLS, TLF.....) voltage regulator products. Description The IFX81481ELV is a PWM step-down DC/DC controller with external power switches, packaged in a small PG- SSOP-14 with exposed pad. The controller is capable to drive external power MOSFETs for load currents up to 10 A. A current limitation feature is provided, which can be implemented either in Rdson configuration, measuring the voltage over the high-side switch while it is closed, or in a shunt configuration where a shunt resistor above the high-side switch is used to measure the voltage. Type Package Marking IFX81481ELV PG-SSOP-14 81481ELV Data Sheet 2 Rev. 1.0, 2013-09-02