Microchip | MIC37100-1.8WS-TR

The MIC37100-1.8WS TR is a 1 A low-dropout, linear voltage regulator that provide low-voltage, high-current output from an extremely small package. Utilizing Micrel’s proprietary Super βeta PNP™ pass element, the MIC37100/01/02 offers extremely low dropout (typically 280 mV at 1 A) and low ground current (typically 11 mA at 1 A).

The MIC37100 is a fixed output regulator offered in the SOT-223 package. The MIC37100/01/02 is ideal for PC add-in cards that need to convert from standard 5 V to 3.3 V, 3.3 V to 2.5 V or 2.5 V to 1.8 V or lower. A guaranteed maximum dropout voltage of 500 mV over all operating conditions allows the MIC37100/01/02 to provide 2.5 V from a supply as low as 3 V and 1.8 V from a supply as low as 2.3 V.

The MIC37100-1.8WS TR is fully protected with over current limiting and thermal shutdown. Fixed output voltages of 1.5 V, 1.65 V, 1.8 V, 2.5 V and 3.3 V are available on MIC37100/01 with adjustable output voltages to 1.24 V on MIC37102.

Key Features :

• Fixed and adjustable output voltages to 1.24 V
• µCap Regulator, 10 µF ceramic output capacitor stable
• 280 mV typical dropout at 1 A
• Ideal for 3.0 V to 2.5 V conversion
• Ideal for 2.5 V to 1.8 V, 1.65 V or 1.5 V conversion
• 1 A 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)

Applications :

• 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