LMR33630AQRNXRQ1

The LMR33630-Q1 regulator meets automotive standards and is an easy-to-use synchronous step-down DC/DC converter that delivers excellent efficiency for demanding applications. The LMR33630-Q1 can drive up to 3A of load current from input voltages up to 36V. The LMR33630-Q1 provides excellent light-load efficiency and output accuracy in an ultra-compact solution footprint. Features such as a power good flag and precision enable facilitate flexible, easy-to-use solutions across a wide range of applications. The LMR33630-Q1 automatically folds back frequency under light-load conditions to improve efficiency. The device eliminates most external components through integration and offers a pin arrangement designed for simple PCB layout. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limiting, and hiccup short-circuit protection. The LMR33630-Q1 is available in a 12-pin 3mm×2mm new VQFN package with wettable flanks.

Applications

• Infotainment systems and instrument clusters: USB charging
• Telematics control units

Key features

• AEC-Q100 qualified for automotive applications: Temperature Grade 1: -40°C to +125°C, T_A; functional safety documentation available to support functional safety system design; designed for harsh automotive applications
• Input voltage range: 3.8V to 36V
• Output voltage range: 1V to 24V
• Output current: 3A
• 75mΩ/50mΩ R_DS-ON power MOSFET
• Peak current mode control
• Minimum on-time as low as 68ns
• Frequency: 400kHz, 1.4MHz, 2.1MHz
• Integrated compensation network
• Low EMI and switching noise
• HotRod package
• Parallel input current path for high-efficiency power conversion at all loads
• Peak efficiency >95%
• Shutdown quiescent current as low as 5μA
• Operating quiescent current as low as 25μA
• Create custom designs with LMR33630-Q1 using WEBENCH PowerDesigner