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Part Number: MIC3975-1.8BMM

 

MFG: Micrel

 

D/C: 07+

Description: The MIC3975 is a 750mA low-dropout linear voltage regulators that provide low-voltage, high-current output from ane...


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MIC3975-1.8BMM General Description


The MIC3975 is a 750mA low-dropout linear voltage regulators that provide low-voltage, high-current output from an
extremely small package. Utilizing Micrel's proprietary Super eta PNP™ pass element, the MIC3975 offers extremely low dropout (typically 300mV at 750mA) and low ground current (typically 6.5mA at 750mA).

The MIC3975 is ideal for PC add-in cards that need to convert from standard 5V to 3.3V or 3.0V, 3.3V to 2.5V or 2.5V to 1.8V or 1.65V. A guaranteed maximum dropout voltage of 500mV over all operating conditions allows the MIC3975 to provide 2.5V from a supply as low as 3.0V and 1.8V or 1.65V from a supply as low as 2.25V.

The MIC3975 is fully protected with overcurrent limiting,thermal shutdown, and reversed-battery protection. Fixed voltages of 5.0V, 3.3V, 3.0, 2.5V, 1.8V, and 1.65V are available. An adjustable output voltage option is available for voltages down to 1.24V.

For other voltages, contact Micrel.

MIC3975-1.8BMM Maximum Ratings

Supply Voltage (VIN) ..................................... 20V to +20V
Enable Voltage (VEN) .................................................. +20V
Storage Temperature (TS) ....................... 65°C to +150°C
Lead Temperature (soldering, 5 sec.) ....................... 260°C
ESD, Note 3

MIC3975-1.8BMM Features

• Fixed and adjustable output voltages to 1.24V
• 300mV typical dropout at 750mA
   Ideal for 3.0V to 2.5V conversion
   Ideal for 2.5V to 1.8V or 1.65V conversion
• Stable with ceramic capacitor
• 750mA minimum guaranteed output current
• 1% initial accuracy
• Low ground current
• Current limiting and thermal shutdown
• Reversed-battery protection
• Reversed-leakage protection
• Fast transient response
• Low-profile MSOP-8

MIC3975-1.8BMM Typical Application

• Fiber optic modules
• 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

MIC3975-1.8BMM Connection Diagram

MIC3975-1.8BMM Connection Diagram

MIC3975-1.8BMM datasheet

MIC3975-1.8BMM
PDF/DataSheet Download

  • Datasheet: MIC3975-1.8BMM
  • File Size: 107171 KB
  • Manufacturer: MICREL [Micrel Semiconductor]
  • Click here to Download

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