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Part Number: MIC3975
Description: The MIC3975 is a 750mA low-dropout linear voltage regulators that provide low-voltage, high-current ou...
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MIC3975
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DataSheet
General Description
MIC3975 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 Maximum Ratings
Supply Voltage (VIN) ..................................... 20V to +20V
Enable Voltage (VEN) ..................................................+20V
Storage Temperature (TS) ........................ 65 to +150
Lead Temperature (soldering, 5 sec.) ....................... 260 ESD, Note 3
MIC3975 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 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 Connection Diagram
MIC3975
PDF/DataSheet Download
- Datasheet: MIC3975
- File Size: 115218 KB
- Manufacturer: Micrel
- Click here to Download
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