描述 Description

The LMR336x0AP-Q1 automotive-qualified regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged applications. The LMR336x0AP-Q1 drives up to 2 A or 3?A of load current from an input of up to 36 V. The LMR336x0AP-Q1 provides high light load efficiency and output accuracy in a very small solution size. Features such as a power-good flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. The LMR336x0AP-Q1 automatically folds back frequency at light load to improve efficiency. Integration eliminates most external components and provides a pinout designed for simple PCB layout. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. The LMR336x0AP-Q1 is available in a 12-pin 3-mm × 2-mm next generation VQFN package with wettable flanks.

特性 Features

? AEC-Q100 qualified for automotive applications:
? Temperature grade 1: –40°C to +125°C, TA

? Functional Safety-Capable
? Documentation available to aid functional safety system design

? Configured for rugged automotive applications
? Input voltage range: 3.8 V to 36 V
? Output voltage range: 1 V to 24 V
? Output current: 2 A, 3 A
? 75-mΩ/50-mΩ RDS-ON power MOSFETs
? Peak-current-mode control
? Short minimum on time of 68 ns
? Frequency: 400 kHz, 2.1 MHz
? Integrated compensation network

? Low EMI and switching noise
? HotRod? package
? Parallel input current paths

? High power conversion at all loads
? Peak efficiency > 95%
? Low shutdown quiescent current of 5 μA
? Low operating quiescent current of 25 μA

? Create a custom design using the LMR336x0AP-Q1 with the WEBENCH Power Designer