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TPS3619-33DGKR
+Lista de MateriaisIC SUPERVISOR 1 CHANNEL 8VSSOP
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FabricanteTexas Instruments
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Peça do Fabricante #TPS3619-33DGKR
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Pacote MSOP-8
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Especificações
| Atributo | Valor |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Type | Battery Backup Circuit |
| Number of Voltages Monitored | 1 |
| Voltage - Threshold | 2.93V |
| Output | Push-Pull, Totem Pole |
| Reset | Active Low |
| Reset Timeout | 60ms Minimum |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
Visão Geral
Description
Key features include a precision fixed threshold voltage, a manual reset input, and a low supply current, making it energy-efficient for battery-operated devices. The watchdog timer function monitors system activity, sending a reset signal if regular microprocessor activity isn't detected within a specified timeframe. This helps in preventing system hangs and ensuring continuous operation. The TPS3619-33DGKR operates over a wide temperature range and is housed in a compact surface-mount package, making it suitable for space-constrained applications. It is widely used in consumer electronics, automotive systems, and industrial applications where reliability and efficient power management are critical.
Equivalent
1. MAX706 Series by Maxim Integrated: These are microprocessor supervisory circuits with similar voltage monitoring capabilities.
2. MCP131 Series by Microchip Technology: These offer voltage detection and reset functionality.
3. STM6823 by STMicroelectronics: Provides similar voltage monitoring and reset functions.
Ensure compatibility by checking specific electrical characteristics and package type.
Features
1. Voltage Monitoring: It monitors supply voltage to ensure it stays within acceptable levels, providing reset signals when voltage levels are out of range.
2. Output Reset: The device provides a reset output to microcontrollers or systems, which is triggered when the monitored voltage falls below a preset threshold.
3. Precision Threshold: The reset threshold is typically set at 3.3V, with high precision to ensure accurate monitoring.
4. Low Power Consumption: It features low quiescent current, making it ideal for battery-powered applications.
5. Watchdog Timer: The device incorporates a watchdog timer to help systems recover from software faults.
6. Manual Reset: It offers a manual reset input for user-initiated resets.
7. Small Package: Available in a small SOT-23 package, it is suitable for space-constrained applications.
8. Temperature Range: It operates over a wide temperature range, typically from -40°C to +85°C.
These features make it suitable for applications requiring reliable voltage supervision and system reset capabilities.
Pinout
This device comes in an 8-pin VSSOP package. The primary functions of the TPS3619-33 include:
1. Supply Voltage Supervision: It ensures that the supply voltage does not drop below a certain threshold, which in this case is 3.3V.
2. Battery Backup Switching: It manages the transition between the main power supply and a backup battery supply.
3. Reset Control: It provides a reset signal to the microcontroller during power-up, power-down, and brownout conditions to prevent erratic behavior.
The pins typically include connections for the supply voltage (VDD), a backup battery (VBAT), a manual reset input (MR), a reset output (RESET), and ground (GND), among others for additional functionality.
Manufacturer
Application
1. Battery-Operated Devices: Ensures efficient power usage and protects against battery depletion.
2. Microcontroller and Microprocessor Systems: Provides accurate reset functions and power supervision.
3. Portable Electronics: Facilitates low power consumption and reliability in devices like smartphones and tablets.
4. Industrial Equipment: Enhances performance in systems requiring precise voltage monitoring and power sequencing.
5. Automotive Electronics: Offers stable operation and protection in vehicle electronic systems.
This voltage supervisory circuit is valued for its low power consumption and high precision.