LM22676 step-down DC to DC regulator module, output 3A 5V

The LM22676 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 3 A of load current.

Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode contro 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 LM22676 also has built in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22676 is a member of Texas Instruments' SIMPLE SWITCHER®family. The SIMPLE SWITCHER® concept provides for an easy to use complete design using a minimum number of external

components and the TI WEBENCH® design tool. TI's WEBENCH®

tool includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in.

Industrial Contro

Telecom and Datacom Systems

Embedded Systems

Wide Input Voltage Range: 6 V to 13 V

Stable with Low ESR Ceramic Capacitors

120 mΩ N-Channel MOSFET PFM Package

100 mΩ N-Channel MOSFET PSOP-8 Package

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

LM22676Q is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C Operating Junction Temperature)