The TPS5420 is a high-output-current PWM converter that integrates a low resistance high side N-channel MOSFET. Included on the substrate with the listed features is a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5420 feedback loop is internally compensated.
●The TPS5420 device is available in an easy to use 8-pin SOIC package. TI provides evaluation modules and the Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.
● Wide Input Voltage Range: 5.5 V to 36 V
● Up to 2-A Continuous (3-A Peak) Output Current
● High Efficiency up to 95% Enabled by
●110-mΩ Integrated MOSFET Switch
● Wide Output Voltage Range: Adjustable Down to 1.22 V
●with 1.5% Initial Accuracy
● Internal Compensation Minimizes External Parts Count
● Fixed 500-kHz Switching Frequency for Small Filter Size
● Improved Line Regulation and Transient Response by
●Input Voltage Feed Forward
● System Protected by Over Current Limiting, Over Voltage
●Protection and Thermal
●Shutdown
● –40°C to 125°C Operating Junction
●Temperature Range
● Available in Small 8-Pin SOIC Package
