MIC812
The MIC811 and MIC812 are inexpensive microprocessor supervisory circuits that monitor power supplies in microprocessor based systems.
The function of this device is to assert a reset if either the power supply drops below a designated reset threshold level or /MR is forced low. Several different reset threshold levels are available to accommodate 3V, 3.3V or 5V powered systems.
The MIC811 has an active low /RESET output, while the MIC812 offers an active high RESET output. The reset output is guaranteed to remain asserted for a minimum of 140ms after VCC has risen above the designed reset threshold level. Having a push-pull output stage, the MIC811/812 does not require a pull-up resistor at the output. The MIC811/812 comes in a 4-pin SOT-143 package.
If a microprocessor voltage supervisor with an open-drain output stage is needed, see MIC6315.
Features- Precision voltage monitor for 3V, 3.3V or 5V power supplies
- /RESET remains valid with VCC as low as 1V
- 5µA typical supply current
- 140ms minimum reset pulse width available
- Manual reset input
- Available in 4-pin SOT-143 package
| Parameter|
Parameter Name
Value
| Value | |
Manual Reset
Yes
|
Yes
| |
Typical Reset Pulse Width (ms)
140
|
140
| |
Reset Type
Active-High Push-Pull
|
Active-High Push-Pull
| |
Typical Supply Current (uA)
5
|
5
| |
Nominal Reset Voltage (V)
2.63, 2.93, 3.08, 4.00, 4.38, 4.63
|
2.63, 2.93, 3.08, 4.00, 4.38, 4.63
| |
Product Type
Single Voltage Monitor
|
Single Voltage Monitor
|
|
Documents
Ordering Information
| Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
|---|
| MIC812LUY-TR | 4 | SOT-143 | -40C to +85C | T/R | ** | ** | ** | ** | ** |
| MIC812MUY-TR | 4 | SOT-143 | -40C to +85C | T/R | ** | ** | ** | ** | ** |
| MIC812TUY-TR | 4 | SOT-143 | -40C to +85C | T/R | 0.29 | 0.24 | 0.22 | 0.18 | 0.17 |
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC812LUY-TR | 0.011000 | 0.036000 | 4 | SOT-143 | - | NiPdAu | e4 |  |  |
| MIC812SUY-TR | 0.011000 | 0.036000 | 4 | SOT-143 | - | NiPdAu | e4 | | |
| MIC812TUY-TR | 0.011000 | 0.036000 | 4 | SOT-143 | - | NiPdAu | e4 | | |
| MIC812MUY-TR | 0.011000 | 0.036000 | 4 | SOT-143 | - | NiPdAu | e4 | | |
| MIC812JUY-TR | 0.011000 | 0.036000 | 4 | SOT-143 | - | NiPdAu | e4 | | |
| MIC812RUY-TR | 0.011000 | 0.036000 | 4 | SOT-143 | - | NiPdAu | e4 | | |
