LM2840-Q1

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design LM2840-Q1, LM2841-Q1, LM2842-Q1 SNVSBE5 – APRIL 2019 LM284x-Q1 Automotive SIMPLE SWITCHER® 4.5-V to 42-V Input, 0.1-, 0.3-, or 0.6-A Output Step-Down DC/DC Regulator in Thin SOT 1 Features 1 AEC-Q100-qualified for automotive applications: – Temperature grade 1: –40°C to +125°C, TA Input voltage 4.5 V to 42 V Output current options of 100 mA, 300 mA, and 600 mA Feedback pin voltage of 0.765 V 550-kHz (X) or 1.25-MHz (Y) switching frequency Low shutdown IQ: 16-µA typical Short-circuit protected Internally compensated Soft-start circuitry Small overall solution size (SOT-6L package) Create a custom design using the LM2840-Q1 (or LM2841-Q1/42-Q1) with the WEBENCH® Power Designer 2 Applications Automotive ADAS camera Automotive wireless charging Automotive body control and lighting 3 Description The LM284x-Q1 SIMPLE SWITCHER™ devices are PWM DC/DC buck (step-down) regulators. With an input range from 4.5 V to 42 V, they are suitable for a wide range of applications, such as power conditioning from unregulated sources. They feature a low RDSON (0.9‑Ω typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 550 kHz (X option) and 1.25 MHz (Y option), allowing the use of small external components while still being able to have low output voltage ripple. Soft start can be implemented using the shutdown (SHDN) pin wi...