MICROCHIP MIC4690YM

The MIC4690 SuperSwitcher™ is an easy-to-use, 500kHz step-down PWM voltage regulator. The MIC4690 achieves over 1A of continuous output current over a wide input voltage range in an 8-lead SO (small outline) package. The high switching frequency of the MIC4690 allows the smallest surface-mount inductors and capacitors to be used. Internal compensation ensures fast transient response and a minimum amount of external components. The MIC4690 features a power SO-8 package with a special lead frame that allows over 1A of continuous current. The MIC4690, housed in an SO-8, can replace larger TO-220 and TO-263 packages in many applications. The MIC4690 allows for a high degree of safety. It has a wide input voltage range of 4V to 34V, allowing for it to be used in applications where input voltage transients may be present. Built-in safety features include over-current protection, frequency foldback protection, and thermal shutdown. The MIC4690 is available in an 8-lead SO package with a junction temperature range of -40°C to +125°C.

• SO-8 package with over 1A output current
• Fixed 500kHz operation
• Wide 4V to 34V input voltage range
• Output voltage adjustable to 1.23V
• All surface mount solution
• Internally compensated with fast transient response
• Up to 85% efficiency
• Overcurrent protection
• Frequency foldback short-circuit protection
• Thermal shutdown

• Simple 1A step-down (buck) regulator
• Replacement of TO-220 and TO-263 designs
• 12V to 5V/3.3V/2.5V/1.8V/1.5V conversion
• 5V to 2.5V/1.8V/1.5V conversion
• On-card switching regulators
• Hard disk drives
• Cable modems
• Positive-to-negative converters
• Simple battery chargers