MIC3975
The MIC3975 is a 750mA low dropout linear voltage regulator that provide low-voltage, high-current output from an extremely small package. Utilizing proprietary Superβeta 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 reverse 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 for details.
Features- Fixed and adjustable output voltages to 1.24V
- 280mV typical dropout at 750mA
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V or 1.65V conversion
- 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
- Reverse battery protection
- Reverse leakage protection
- Fast transient response
- Low-profile MSOP-8
| Parameter|
Parameter Name
Value
| Value | |
Product Type
Single LDOs
|
Single LDOs
| |
# of Out
1
|
1
| |
IOUT #1
|
| |
IOUT #2
|
| |
IOUT #3
|
| |
IOUT #4
|
| |
IOUT (mA)
750
|
750
| |
VIN Min (V)
2.25
|
2.25
| |
VIN Max (V)
16
|
16
| |
VOUT (V)
1.65, 1.8, 2.5, 3.0, 3.3, 5.0, Adj
|
1.65, 1.8, 2.5, 3.0, 3.3, 5.0, Adj
| |
Voltage Drop Typ (mV)
300
|
300
| |
IGND Typ (µA)
7
|
7
| |
Tol Typ %
±1
|
±1
| |
PSRR 1 kHz (dB)
55
|
55
| |
Soft Start Pin
|
| |
Load Dump
|
| |
Rev Bat
|
| |
Reverse Current Protect
Yes
|
Yes
|
|
Documents
Ordering Information
| Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
|---|
| MIC3975-3.3YMM | 8 | MSOP | -40C to +125C | TUBE | ** | ** | ** | ** | ** |
| MIC3975-3.3YMM-TR | 8 | MSOP | -40C to +125C | T/R | 1.87 | 1.56 | 1.42 | 1.18 | 1.09 |
| MIC3975-5.0YMM | 8 | MSOP | -40C to +125C | TUBE | 1.87 | 1.56 | 1.42 | 1.18 | 1.09 |
| MIC3975-5.0YMM-TR | 8 | MSOP | -40C to +125C | T/R | 1.87 | 1.56 | 1.42 | 1.18 | 1.09 |
| MIC3975YMM | 8 | MSOP | -40C to +125C | TUBE | 1.87 | 1.56 | 1.42 | 1.18 | 1.09 |
| MIC3975YMM-TR | 8 | MSOP | -40C to +125C | T/R | 1.87 | 1.56 | 1.42 | 1.18 | 1.09 |
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC3975-3.3YMM | 0.025100 | 0.124600 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 |  |  |
| MIC3975-2.5YMM-TR | 0.025100 | 0.334700 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975YMM-TR | 0.025100 | 0.334700 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975-1.8YMM-TR | 0.025100 | 0.334700 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975-2.5YMM | 0.025100 | 0.124600 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975-1.65YMM-TR | 0.025100 | 0.334700 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975-5.0YMM-TR | 0.025100 | 0.334700 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975-3.0YMM | 0.025100 | 0.124600 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975YMM | 0.025100 | 0.124600 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975-1.8YMM | 0.025100 | 0.124600 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975-3.3YMM-TR | 0.025100 | 0.334700 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975-1.65YMM | 0.025100 | 0.124600 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975-5.0YMM | 0.025100 | 0.124600 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
| MIC3975-3.0YMM-TR | 0.025100 | 0.334700 | 8 | MSOP | 3x3x1.0mm | NiPdAu | e4 | | |
