LM5145

www.ti.com LM5145 SNVSAI4B – NOVEMBER 2017 – REVISED NOVEMLBMER52104250 SNVSAI4B – NOVEMBER 2017 – REVISED NOVEMBER 2020 LM5145 75-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range 1 Features 2 Applications Versatile synchronous buck DC/DC controller – Wide input voltage range of 6 V to 75 V – 0.8-V reference with ±1% feedback accuracy – Adjustable output voltage from 0.8 V to 60 V – 40-ns tON(min) for high VIN / VOUT ratio – 140-ns tOFF(min) for low dropout – Optimized for CISPR 32 requirements Switching frequency from 100 kHz to 1 MHz – SYNC In and SYNC Out capability – Selectable diode emulation or FPWM 7.5-V gate drivers for standard VTH MOSFETs – 14-ns adaptive dead-time control – 2.3-A source and 3.5-A sink capability – Low-side soft start for prebiased start-up Fast line and load transient response – Voltage-mode control with line feedforward – High gain-bandwidth error amplifier Inherent protection features for robust design – Adjustable output voltage soft start – Hiccup-mode overcurrent protection – Input UVLO with hysteresis – VCC and gate-drive UVLO protection – Precision enable input and open-drain PGOOD indicator for sequencing and control – Thermal shutdown protection with hysteresis 20-pin VQFN package with wettable flanks Create a custom design using the LM5145 with WEBENCH® Power Designer Remote radio unit (RRU) and BTS Networking and computing power Non-isolated PoE and IP cameras Industrial motor drives 3 Descripti...