TPS54122-Q1

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design TPS54122-Q1 SBVS253A – JANUARY 2015 – REVISED MAY 2015 TPS54122-Q1 Dual-Output, 3-A, QuietSupply™ with Integrated DC-DC Converter and Low-Noise LDO 1 Features 1 AEC-Q100 Qualified with the Following Results: – Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range – Device HBM ESD Classification Level H2 – Device CDM ESD Classification Level C4B Input Voltage Range: – VIN: 2.95 V to 6.0 V – LDOIN: VOUT + VDO to 5.5 V – BIAS: 2.375 V to 5.5 V Provides Two Configurable Supply Rails Independent Enable, Power Good, and Soft-Start 3-A, High-Efficiency, Synchronous, Step-Down Switcher: – Output Voltage Adjustable Down to 0.8 V – Sync to External Clock: 300 kHz to 2 MHz – 1% Reference Accuracy 3-A, Low-Noise LDO: – Output Noise: 17 µVRMS at 10 Hz to 1 MHz with DC-DC Running – Output Voltage Range: 0.8 V to 3.6 V – Ultralow Dropout: 100 mV (typ) at 3 A – 1% Output Accuracy – Excellent Load and Line Transient Response Small Package: 5.5-mm × 3.5-mm VQFN-24 2 Applications Power Optimization in Automotive ECU Power Automotive Infotainment Systems Automotive ADAS Systems Powering Sensitive Clocking-Distribution Circuits Powering RF Components: VCOs, Receivers, and ADCs 3 Description The TPS54122-Q1 combines the efficiency of a stepdown switching (dc-dc) converter with a high powersupply rejection (PSR), low-noise, low-dropout regulat...