TPS54386

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54383, TPS54386 SLUS774C – AUGUST 2007 – REVISED DECEMBER 2014 TPS5438x Dual 3-A Non-Synchronous Converters With Integrated High-Side MOSFET 1 Features 1 4.5-V to 28-V Input Range Output Voltage Range 0.8 V to 90% of Input Voltage Output Current Up to 3 A Two Fixed Switching Frequency Versions: – TPS54383: 300 kHz – TPS54386: 600 kHz Three Selectable Levels of Overcurrent Protection (Output 2) 0.8-V 1.5% Voltage Reference 2.1-ms Internal Soft-Start Dual PWM Outputs 180° Out-of-Phase Ratiometric or Sequential Startup Modes Selectable by a Single Pin 85-mΩ Internal High-Side MOSFETs Current Mode Control Internal Compensation (See Page 16) Pulse-by-Pulse Overcurrent Protection Thermal Shutdown Protection at +148°C 14-Pin PowerPAD™ HTSSOP package 2 Applications Set Top Box Digital TV Power for DSP Consumer Electronics 3 Description The TPS54383 and TPS54386 are dual output, nonsynchronous buck converters capable of supporting 3-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage. With an internally-determined operating frequency, soft-start time, and control loop compensation, these converters provide many features with a minimum of external components. Channel 1 overcurrent protection is set at 4.5 A, while Channel 2 overcurrent protection level is selec...