LM5152-Q1

LM5152-Q1, LM51521-Q1 SLVSFF2A – FEBRUARY 2022 – REVISED APRIL 2022 LM5152x-Q1 Automotive Low-IQ Synchronous Boost Controller for Start-Stop/Backup Battery Power Supply 1 Features AEC-Q100 qualified for automotive applications EMI mitigation – Optional programmable spread spectrum – Lead-less package – Temperature grade 1: –40°C to +125°C, TA Functional Safety-Capable – Documentation available to aid functional safety Programmability and flexibility – Dynamic VOUT tracking – Dynamic switching frequency programming system design – Programmable line UVLO Suited for wide operating range automotive battery – Adjustable soft start powered applications – Adaptive dead time – 3.8-V to 42-V input operating range – Dynamically programmable VOUT from 5 V to 20 V (protection up to 57 V) – Boost STATUS indicator Integrated protection features – Cycle-by-cycle peak current limit – Minimum boost input 0.8 V when BIAS ≥ 3.8 V – Overvoltage protection – Bypass operation when VSUPPLY > VLOAD (LM5152 only, see the device comparison – HB-SW short protection – Thermal shutdown table) Minimized battery drain 2 Applications – Shutdown current ≤ 3 μA – Automatic mode transition – Battery drain in deep sleep ≤ 11 μA (bypass operation, charge pump off) – Battery drain in deep sleep ≤ 33 μA (bypass operation, charge pump on) – BIAS IQ in sleep ≤ 13 μA (skip mode) – Strong 5-V MOSFET drivers Small solution size and low cost – 2.2-MHz maximum switching frequency – Inte...