LM5123-Q1
Overview
Internal boot diode - Constant peak current limit over VIN - Supports DCR inductor current sensing The LM5123-Q1 device is a wide input range synchronous boost controller that employs peak current mode control. - QFN-20 with wettable flanks Avoid AM band interference and crosstalk - Optional clock synchronization - Switching frequency from 100 kHz to 2.2 MHz - Selectable switching mode (FPWM, diode em.
- AEC-Q100 qualified for automotive applications - Temperature grade 1: -40°C to +125°C, TA
- Suited for wide operating range automotive battery powered applications - 3.8-V to 42-V input operating range - Dynamically programmable VOUT from 5 V to 20 V, or from 15 V to 57 V - Minimum boost input 0.8 V when BIAS ≥ 3.8 V - Bypass operation when VSUPPLY > VLOAD
- Minimized battery drain - Shutdown current ≤ 3 μA - Automatic mode transition - Battery drain in deep sleep ≤ 11 μA (bypass operation, charge pump off) - Optional programmable spread spectrum - Lead-less package
- Programmability and flexibility - Dynamic VOUT tracking - Dynamic switching frequency programming - Programable line UVLO - Adjustable soft start - Adaptive dead-time - PGOOD indicator
- Integrated protection features - Cycle-by-cycle peak current limit - Overvoltage protection - HB-SW short protection - Thermal shutdown
