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Part Number: NCP803
Description: The NCP803 is a cost-effective system supervisor circuit designed to monitor VCC in digital systems and provide a reset...
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NCP803
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DataSheet
General Description
NCP803 General Description
The NCP803 is a cost-effective system supervisor circuit designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required.
The reset output is driven active within 10 sec of VCC falling through the reset voltage threshold. Reset is maintained active for a minimum of 140 msec after VCC rises above the reset threshold. The NCP803 has an open drain active-low RESET output. The output of the NCP803 is guaranteed valid down to VCC = 1.0 V and is available in a SOT-23 package.
The NCP803 is optimized to reject fast transient glitches on the VCC line. Low supply current of 1.0 A (VCC = 3.2 V) make this device suitable for battery powered applications.
NCP803 Maximum Ratings
| Rating | Symbol | Value | Unit |
| Supply Voltage (VCC to GND) |
VCC |
6.0 | V |
| RESET | -0.3 to (VCC + 0.3) |
V | |
| Input Current, VCC |
20 | mA | |
| Output Current, RESET | 20 | mA | |
| dV/dt (V CC) |
100 | V/ sec | |
| Thermal Resistance, Junction to Air | RJA | 491 | °C/W |
| Operating Temperature Range | TA | -40 to +105 | C ° |
| Storage Temperature Range | Tstg | -65 to +150 | C ° |
| Lead Temperature (Soldering, 10 Seconds) | Tsol | +260 | C ° |
| Latch-up performance: Negative | ILatch-up | 150 | mA |
NCP803 Features
* Precision VCC Monitor for 2.5 V, 3.0 V, 3.3 V, and 5.0 V Supplies
* Precision Monitoring Voltages from 1.6 V to 4.9 V Available in 100 mV Steps
* 140 msec Guaranteed Minimum RESET Output Duration
* RESET Output Guaranteed to VCC = 1.0 V
* Low 1.0 A Supply Current
* VCC Transient Immunity
* Small SOT-23 Package
* No External Components
* Wide Operating Temperature: -40°C to 105°C
* Precision Monitoring Voltages from 1.6 V to 4.9 V Available in 100 mV Steps
* 140 msec Guaranteed Minimum RESET Output Duration
* RESET Output Guaranteed to VCC = 1.0 V
* Low 1.0 A Supply Current
* VCC Transient Immunity
* Small SOT-23 Package
* No External Components
* Wide Operating Temperature: -40°C to 105°C
NCP803 Typical Application
* Computers
* Embedded Systems
* Battery Powered Equipment
* Critical P Power Supply Monitoring
* Embedded Systems
* Battery Powered Equipment
* Critical P Power Supply Monitoring
NCP803 Connection Diagram
NCP803
PDF/DataSheet Download
- Datasheet: NCP803
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