MICROCHIP MIC37100-3.3WS

The MIC37100, MIC37101, and MIC37102 are 1A lowdropout, linear voltage regulators that provide low- voltage, high- current output from an extremely small package. Utilizing Micrel's proprietary Super Beta PNP pass element, the MIC37100/01/02 offers extremely low dropout (typically 280mV at 1A) and low ground current (typically 11mA at 1A). The MIC37100 is a fixed output regulator offered in the SOT- 223 package. The MIC37101 and MIC37102 are fixed and adjustable regulators, respectively, in a thermally enhanced power 8- pin SOIC (small outline package) and the SOT- 223 package. The MIC37102 is also available in the S- PAK power package, for applications that require higher power dissipation or higher operating ambient temperatures. The MIC37100/01/02 is ideal for PC add- in cards that need to convert from standard 5V to 3.3V, 3.3V to 2.5V or 2.5V to 1.8V or lower. A guaranteed maximum dropout voltage of 500mV over all operating conditions allows the MIC37100/01/02 to provide 2.5V from a supply as low as 3V and 1.8V from a supply as low as 2.3V. The MIC37100/01/02 is fully protected with overcurrent limiting and thermal shutdown. Fixed output voltages of 1.5V, 1.65V, 1.8V, 2.5V and 3.3V are available on MIC37100/01 with adjustable output voltages to 1.24V on MIC37102.

• Fixed and adjustable output voltages to 1.24V
• μCap Regulator, 10μF ceramic output capacitor stable
• 280mV typical dropout at 1A
• Ideal for 3.0V to 2.5V conversion
• Ideal for 2.5V to 1.8V, 1.65V or 1.5V conversion
• 1A minimum guaranteed output current
• 1% initial accuracy
• Low ground current
• Current limiting and thermal shutdown
• Reversed- leakage protection
• Fast transient response
• Low- profile SOT- 223 package
• Power SO- 8 package
• S- PAK package (MIC37102 only)

• LDO linear regulator for PC add- in cards
• PowerPC power supplies
• High- efficiency linear power supplies
• SMPS post regulator
• Multimedia and PC processor supplies
• Battery chargers
• Low- voltage microcontrollers and digital logic