ADM809-5LART-REEL7

Overview

Product Category

ADM809-5LART-REEL7 belongs to the category of voltage supervisors or reset ICs.

Use

This product is primarily used to monitor the power supply voltage in electronic systems and ensure proper system operation by generating a reset signal when the voltage falls below a specified threshold.

Characteristics

• Voltage monitoring range: 2.93V to 5.5V
• Reset threshold accuracy: ±1.8%
• Low quiescent current: 6µA (typical)
• Power-on reset delay time: 140ms (typical)
• Active-low reset output
• Small package size: SOT-23-5
• RoHS compliant

Package and Quantity

ADM809-5LART-REEL7 is available in a small SOT-23-5 package. It is typically sold in reels containing a specific quantity, usually 3000 units per reel.

Specifications

Electrical Specifications

• Operating voltage range: 1.1V to 5.5V
• Reset threshold voltage options: 2.93V, 3.08V, 3.15V, 4.38V, 4.63V, 4.75V, 4.88V, 5.0V
• Reset timeout period options: 140ms, 560ms, 1120ms, 2240ms
• Quiescent current: 6µA (typical), 10µA (maximum)
• Reset active low output voltage: 0.4V (maximum)
• Operating temperature range: -40°C to +85°C

Pin Configuration

The ADM809-5LART-REEL7 has five pins arranged as follows:

```

---

| | --| VCC | --| GND | --| MR | --| RESET | |_______| ```

• VCC: Power supply input
• GND: Ground reference
• MR: Manual reset input (active low)
• RESET: Reset output (active low)

Functional Features

Voltage Monitoring

ADM809-5LART-REEL7 continuously monitors the power supply voltage. When the voltage drops below the specified threshold, it triggers a reset signal.

Reset Generation

Upon detecting a voltage drop below the threshold, the ADM809-5LART-REEL7 generates an active-low reset signal. This signal can be used to reset microcontrollers, digital logic circuits, or other system components.

Manual Reset

The MR pin allows for manual resetting of the device. Pulling this pin low forces the reset output to go low, regardless of the monitored voltage level.

Advantages and Disadvantages

Advantages

• Wide operating voltage range
• Accurate reset threshold voltage
• Low quiescent current consumption
• Small package size for space-constrained applications
• RoHS compliant, ensuring environmental friendliness

Disadvantages

• Limited reset timeout period options
• Lack of adjustable reset threshold voltage

Working Principles

ADM809-5LART-REEL7 operates by comparing the power supply voltage with the internally set threshold voltage. If the voltage falls below the threshold, the reset output is activated. The reset remains active until the voltage rises above the threshold or a manual reset is triggered.

Application Field Plans

ADM809-5LART-REEL7 finds applications in various electronic systems where reliable power supply monitoring and reset generation are critical. Some potential application fields include: - Microcontroller-based systems - Industrial control systems - Automotive electronics - Battery-powered devices - Embedded systems

Alternative Models

• ADM803/ADM809: Similar voltage supervisors with different reset timeout options
• MAX809: Voltage supervisor IC with adjustable reset threshold voltage
• TPS3808: Ultra-low-power voltage supervisor with programmable delay time

These alternative models offer similar functionality and can be considered based on specific application requirements.

In conclusion, ADM809-5LART-REEL7 is a voltage supervisor IC that ensures proper system operation by monitoring the power supply voltage. Its accurate threshold detection, low power consumption, and small package size make it suitable for various electronic applications.