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TPS3305-33DR
+NomenclatureIC SUPERVISOR 2 CHANNEL 8SOIC
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FabricantTexas Instruments
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Pièce fabricant #TPS3305-33DR
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Package SOIC (D)-8
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En stock5272
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Spécifications
| Attribut | Valeur |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| ProductStatus | Active |
| Type | Multi-Voltage Supervisor |
| NumberofVoltagesMonitored | 2 |
| Voltage-Threshold | 2.93V, 4.55V |
| Output | Push-Pull, Totem Pole |
| Reset | Active High/Active Low |
| ResetTimeout | 140ms Minimum |
| OperatingTemperature | -40°C ~ 85°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Présentation
Description
Key features of the TPS3305-33DR include:
- Dual-voltage monitoring capability, typically for a primary 3.3V supply and a secondary adjustable or fixed voltage.
- A reset output to alert the microprocessor when the monitored voltage falls below the preset level.
- A precision voltage threshold with low tolerance for accurate monitoring.
- Built-in delay circuitry to ensure the reset signal duration is sufficient for proper system reset.
- Low power consumption, making it suitable for battery-powered devices.
- Surface-mount packaging for efficient PCB design.
The TPS3305-33DR is commonly used in applications such as computers, embedded systems, and any electronic devices requiring precise voltage supervision to ensure stability and prevent data corruption or system malfunction.
Equivalent
1. MAX706 series by Maxim Integrated.
2. MCP1321T series by Microchip Technology.
3. ADM705 series by Analog Devices.
4. NCP303 series by ON Semiconductor.
These alternatives offer similar functions such as monitoring voltage levels and providing a reset signal. Always check the specific parameters and pin configurations to ensure compatibility with your application.
Features
1. Reset Functionality: It provides a reset signal to the microcontroller or system when the monitored voltages drop below the threshold, preventing malfunction.
2. Wide Supply Voltage Range: It operates from a supply voltage range of 1.8V to 6V, making it versatile for various applications.
3. High Accuracy: The device offers precise voltage monitoring with a typical accuracy of ±1.5%.
4. Low Supply Current: It consumes minimal current, aiding in power efficiency.
5. Manual Reset Input: The device includes a manual reset input, allowing for external control over the reset process.
6. Watchdog Timer: An integrated watchdog timer helps detect and reset the system in case of software malfunctions.
7. Small Package: It's available in a compact SOIC-8 package, ideal for space-constrained applications.
These features make the TPS3305-33DR suitable for safeguarding embedded systems and microcontroller-based applications.
Pinout
Here's a concise breakdown of its pins and functions:
1. GND (Pin 1): Ground connection.
2. VDD (Pin 2): Supply voltage input.
3. MR (Pin 3): Manual reset input, active low.
4. WDI (Pin 4): Watchdog timer input.
5. NC (Pin 5): No connection (can be left floating or tied to ground).
6. RESET1 (Pin 6): Open-drain reset output for the 3.3V supply.
7. RESET2 (Pin 7): Open-drain reset output for an adjustable voltage threshold.
8. NC (Pin 8): No connection (similar to Pin 5).
The TPS3305-33DR ensures reliable operation by providing reset signals during power-up, power-down, and undervoltage conditions, as well as offering watchdog functionality to monitor microprocessor activity.