LM2673S-5.0

• Efficiency up to 94%
• Easy-to-use design (with off-the-shelf external components)
• The resistor programmable peak current is limited to a range of 2A to 5A.
• 150mΩ DMOS output switch
• Fixed output and adjustable (1.2V to 37V) versions of 3.3V, 5V and 12V
• The entire line exceeds up to ± 2% output tolerance and load conditions
• Wide input voltage range from 8V to 40V:
• 260 kHz fixed frequency internal oscillator
• Soft start capability
• Operating junction temperature range from -40 to +125 °C

illustrate

TheLM2673 series regulators are monolithic integrated circuits that are buck (buck) switching regulators capable of driving loads up to 3A with excellent line and load regulation characteristics. High efficiency (> 90%) is obtained by using a low-on-resistance DMOS power switch. The series includes fixed output voltages of 3.3V, 5V and 12V and adjustable output versions.

The concept of the SIMPLE SWITCHER provides a complete design with the use of a minimum number of external components. A higher fixed frequency oscillator (260KHz) allows the use of smaller size components. A standard inductor for a home with LM2673 is offered by several manufacturers, greatly simplifying the design process.

Other features include the inclusion of a soft-start timing capacitor to gradually turn on the regulator's ability to input inrush current at power-up. The LM2673 series also features built-in thermal shutdown and resistive programmable current limiting power MOSFET switches in case of device and load circuit failures. The output voltage is guaranteed to be a tolerance of ± 2%. The clock frequency is controlled at tolerance ± 11%.

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• Simple design, high efficiency (> 90%), step-down switching regulator
• Efficient system pre-regulator linear regulator
• Battery charger