LP8728-Q1

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LP8728-Q1 SNVS972B – AUGUST 2013 – REVISED DECEMBER 2014 LP8728-Q1 Quad-Output Step-Down DC/DC Converter 1 Features 1 LP8728-Q1 is an Automotive Grade Product that is AECQ-100 Grade 1 Qualified Four High Efficiency Step-Down DC/DC Converters: – 93% Peak Efficiency (VIN = 5 V, VOUT 3.3 V) – Max Output Current 1 A – Forced PWM Operation – Soft-Start Control – VOUT1 = 3.3 V – VOUT2 = 1.25 V – VOUT3 = 1.8 V or 2.65 V (pin selectable) – VOUT4 = 1.8 V Separate Enable Inputs for each Converter Control Separate Power Good Outputs for each Converter Output Overcurrent and Input Overvoltage Protection Overtemperature Protection Undervoltage Lockout (UVLO) 2 Applications FPGA, DSP Core Power Processor Power for Mobile Devices Peripheral I/O Power Automotive Safety Cameras Automotive Infotainment Micro Controller Simplified Schematic VIN 1 µF 1 µF VDDIO AVDD BYP PG_B1 PG_B2 PG_B3 PG_B4 EN_B1 EN_B2 EN_B3 EN_B4 DEFSEL LP8728 VIN_B1 SW_B1 FB_B1 1.5 µH VIN_B2 SW_B2 FB_B2 1.5 µH VIN_B3 SW_B3 FB_B3 1.5 µH VIN_B4 SW_B4 FB_B4 1.5 µH VIN 10 µF VOUT1 10 µF VIN 10 µF VOUT2 10 µF VIN 10 µF VOUT3 10 µF VIN 10 µF VOUT4 10 µF 3 Description The LP8728-Q1 is a quad-output Power Management Unit (PMU), optimized for low-power FPGAs, microprocessors, and DSPs for automotive applications. This device integrates four highly efficient step-down DC/DC converters into one package....