LM22674MRX-ADJ/NOPB

Description
The LM22674 switching regulator provides all of the functions necessary to implement an efficient high voltage step-down (buck) regulator using a minimum of external components. This easy to use regulator incorporates a 42 V N-channel MOSFET switch capable of providing up to 500 mA of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5 V output and adjustable output voltage options are available. A switching frequency of 500 kHz allows for small external components and good transient response. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 μA (typ). Built in soft-start (500 μs, typ) saves external components.
The LM22674 also has built in thermal shutdown, and current limiting to protect against accidental overloads.
The LM22674 device is a member of Texas Instruments' SIMPLE SWITCHER9 family.
The SIMPLE SWITCHER@ concept provides for an easy to use complete design using a minimum number of external components and the TI WEBENCHO design tool. TI's WEBENCHO tool includes features such as external component calculation, electrical simulation, thermal simulation， and Build-lt boards for easy design-in.  
Features ●Wide Input Voltage Range: 4.5 V to 42 V●Internally Compensated Voltage Mode Control●Stable with Low ESR Ceramic Capacitors●200 mQ N-Channel MOSFET●Output Voltage Options:-ADJ (Outputs as Low as 1 .285 V)-5.0 (Output Fixed to 5 V)●±1.5% Feedback Reference Accuracy●Switching Frequency of 500 kHz●- 40°C to 125°C Operating Junction Temperature Range●Precision Enable Pin●Integrated Boot-Strap Diode●Integrated Soft-Start●Fully WEBENCH@ Enabled●LM22674-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (- 40°C to +125°C Operating Junction Temperature)●SO PowerPAD (Exposed Pad)   Applications ●Industrial Control●Telecom and Datacom Systems●Embedded Systems●Conversions from Standard 24 V, 12 V and 5 V Input Rails