LTC2909CDDB-2.5#TRMPBF

Overview

Category: Integrated Circuit (IC)
Use: Voltage Monitor and Reset Circuit
Characteristics: Low Power, Precision, Adjustable Threshold
Package: DFN-6 (Dual Flat No-Lead)
Essence: Monitors voltage levels and generates reset signals
Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.6V to 6V
• Threshold Voltage Range: 1.2V to 5V
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LTC2909CDDB-2.5#TRMPBF package consists of six pins arranged as follows:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| TH RST |-- Pin 2: Threshold Voltage Input (TH) --| OUT MR |-- Pin 3: Output (OUT) --| NC NC |-- Pin 4: Not Connected (NC) --| NC NC |-- Pin 5: Not Connected (NC) --| NC NC |-- Pin 6: Not Connected (NC) |___________| ```

Functional Features

• Monitors the voltage level at the TH pin
• Generates a reset signal at the OUT pin when the voltage falls below the threshold
• Adjustable threshold voltage using external resistors
• Debounced manual reset input (MR) for immediate system reset
• Low quiescent current for power-sensitive applications

Advantages

• Precise monitoring and reset functionality ensure reliable system operation
• Adjustable threshold allows customization for different voltage levels
• Low power consumption extends battery life in portable devices
• Debounced manual reset input prevents accidental resets

Disadvantages

• Limited to monitoring and resetting voltage levels only
• Requires external resistors for threshold adjustment

Working Principles

The LTC2909CDDB-2.5#TRMPBF is a voltage monitor and reset circuit that operates by continuously monitoring the voltage level at the TH pin. When the voltage falls below the threshold set by external resistors, the circuit generates a reset signal at the OUT pin. This reset signal can be used to initiate a system reset or trigger other actions.

Detailed Application Field Plans

The LTC2909CDDB-2.5#TRMPBF finds applications in various fields where voltage monitoring and reset functionality are critical. Some potential application areas include: - Battery-powered devices: Ensures proper operation and prevents damage due to low voltage conditions. - Industrial control systems: Monitors power supply voltages to prevent malfunctions and ensure system stability. - Automotive electronics: Protects sensitive components from voltage fluctuations and initiates system resets when necessary. - Telecommunications equipment: Provides reliable voltage monitoring and reset capabilities for uninterrupted operation.

Detailed and Complete Alternative Models

• LTC2909IDD-2.5#PBF: Similar functionality but available in a 8-lead DFN package.
• LTC2909CDDB-3.3#TRMPBF: Same features but with a higher threshold voltage of 3.3V.

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