Overview
The UC2903DWTRG4 is a quad supply and line monitor integrated circuit manufactured by Texas Instruments. This device is designed to monitor up to four separate supply voltage levels, making it an essential component in systems that require multiple voltage monitoring. It operates over a wide temperature range of -40°C to 85°C and is packaged in an 18-pin SOIC (Small Outline Integrated Circuit) package.
The UC2903DWTRG4 is particularly useful in applications where early detection of power source failures and voltage anomalies is critical. It features adjustable under- and over-voltage fault thresholds, a precision 2.5V reference, and a general-purpose op-amp for auxiliary use.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | UC2903DWTRG4 |
| Package Type | 18-SOIC |
| Number of Voltages Monitored | 4 |
| Operating Temperature Range | -40°C to 85°C |
| Output Driver Type / Reset Output | Active-low, Open-drain |
| Reset Timeout | Adjustable/Selectable |
| Voltage - Threshold | Adjustable/Selectable |
| Iq(Typ) | 7000 uA |
| VCC(Max) | 40 V |
| VCC(Min) | 8 V |
| Reset Threshold Accuracy | 3 % |
| Special Features | Negative Voltage Monitoring, Over Voltage Sense |
| Threshold Voltage 1(Typ) | 1.8 V |
| Time Delay | Programmable ms |
Key Features
- Inputs for monitoring up to four separate supply voltage levels.
- Internal inverter for sensing a negative supply voltage.
- Line/Switch sense input for early power source failure warning.
- Programmable under- and over-voltage fault thresholds with proportional hysteresis.
- Precision 2.5V reference.
- General-purpose op-amp for auxiliary use.
- Three high current, >30mA, open-collector outputs indicate over-voltage, under-voltage, and power OK conditions.
- Input supply under-voltage sensing and start-latch eliminate erroneous fault alerts during start-up.
- 8-40V supply operation with 7mA stand-by current.
Applications
The UC2903DWTRG4 is suitable for a variety of applications where multiple voltage monitoring is essential, such as:
- Power supply systems requiring multiple voltage level monitoring.
- Industrial control systems that need early detection of power source failures.
- Automotive systems where robust voltage monitoring is critical.
- Medical devices that require precise voltage monitoring for safety and reliability.
- Telecommunication equipment where multiple voltage levels need to be monitored.
Q & A
- What is the UC2903DWTRG4 used for?
The UC2903DWTRG4 is a quad supply and line monitor integrated circuit used to monitor up to four separate supply voltage levels.
- What is the operating temperature range of the UC2903DWTRG4?
The operating temperature range is -40°C to 85°C.
- What type of output does the UC2903DWTRG4 have?
The output is active-low, open-drain.
- Can the reset timeout be adjusted?
- Does the UC2903DWTRG4 support negative voltage monitoring?
- What is the typical quiescent current (Iq) of the UC2903DWTRG4?
The typical quiescent current (Iq) is 7000 uA.
- What is the maximum supply voltage (VCC) for the UC2903DWTRG4?
The maximum supply voltage (VCC) is 40 V.
- What is the reset threshold accuracy of the UC2903DWTRG4?
The reset threshold accuracy is 3%.
- Does the UC2903DWTRG4 have any special features?
- What is the typical threshold voltage for the UC2903DWTRG4?
The typical threshold voltage is 1.8 V, and it is also adjustable.
