TPS3851H25EQDRBRQ1 - English Editing Encyclopedia Entry

Product Overview

Category

The TPS3851H25EQDRBRQ1 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for voltage monitoring and reset functions in various electronic systems.

Characteristics

• Voltage monitoring range: 0.4V to 5.5V
• Adjustable threshold voltage
• Low quiescent current consumption
• Wide operating temperature range: -40°C to +125°C
• Small package size: 8-pin SON (2mm x 3mm)

Package and Quantity

The TPS3851H25EQDRBRQ1 is available in a small-outline no-lead (SON) package. It is supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Supply voltage range: 1.6V to 5.5V
• Threshold voltage accuracy: ±1.5%
• Quiescent current: 1.5µA (typical)
• Power-on reset delay time: 25ms (typical)
• Operating temperature range: -40°C to +125°C

Pin Configuration

The TPS3851H25EQDRBRQ1 has the following pin configuration:

```

---

| | --| VDD GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output (RESETOUT) --| RESET IN |-- Pin 3: Reset Input (RESETIN) --| MR |-- Pin 4: Manual Reset (MR) --| VDD |-- Pin 5: Supply Voltage (VDD) --| NC |-- Pin 6: No Connection (NC) --| NC |-- Pin 7: No Connection (NC) --| NC |-- Pin 8: No Connection (NC) |___________| ```

Functional Features

• Voltage monitoring and reset generation
• Adjustable threshold voltage for precise monitoring
• Power-on reset delay to ensure stable operation during power-up
• Manual reset input for system control
• Low quiescent current consumption for power efficiency
• Wide operating temperature range for various environments

Advantages and Disadvantages

Advantages

• Precise voltage monitoring for reliable system operation
• Adjustable threshold voltage allows customization
• Low power consumption for energy-efficient designs
• Compact package size enables space-saving integration
• Wide operating temperature range ensures versatility

Disadvantages

• Limited number of pins may restrict functionality in complex systems
• Requires external components for complete voltage monitoring solution

Working Principles

The TPS3851H25EQDRBRQ1 operates by continuously monitoring the supply voltage. It compares the voltage against an adjustable threshold level set by the user. If the voltage falls below the threshold, the IC generates a reset signal to initiate a system reset. The power-on reset delay feature ensures that the reset signal is not triggered immediately upon power-up, allowing the system to stabilize.

Detailed Application Field Plans

The TPS3851H25EQDRBRQ1 finds applications in various fields, including:

1. Automotive: Used for voltage monitoring and reset functions in automotive electronic control units (ECUs) and safety systems.
2. Industrial: Employed in industrial automation systems, motor control units, and power distribution systems for reliable voltage monitoring.
3. Consumer Electronics: Integrated into smart home devices, wearable gadgets, and portable electronics to ensure proper functioning and prevent damage due to voltage fluctuations.
4. Telecommunications: Utilized in network equipment, routers, and communication devices to monitor power supply integrity and trigger resets if necessary.
5. Medical: Incorporated into medical devices and equipment to monitor critical voltage levels and initiate system resets in case of abnormalities.

Detailed and Complete Alternative Models

1. TPS3850H25: Similar to TPS3851H25EQDRBRQ1, but without the manual reset (MR) pin.
2. TPS3839K33: Offers a fixed threshold voltage of 3.3V, suitable for specific applications.
3. TPS3890: Provides additional features such as power sequencing and watchdog timer functionality.

These alternative models offer similar voltage monitoring and reset capabilities, catering to different design requirements and specifications.

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