LTC2901-1CGN#TRPBF

Product Overview

Category

The LTC2901-1CGN#TRPBF belongs to the category of integrated circuits (ICs) and specifically falls under the family of supervisory circuits.

Use

This product is primarily used for monitoring and controlling power supply voltages in electronic systems. It ensures proper operation by providing accurate voltage supervision, reset generation, and power-on reset functionality.

Characteristics

• Voltage monitoring: The LTC2901-1CGN#TRPBF can monitor up to two separate power supply voltages simultaneously.
• Adjustable thresholds: Users can set the desired voltage thresholds for monitoring using external resistors.
• Precision: This IC offers high accuracy in voltage monitoring, ensuring reliable system operation.
• Low power consumption: The LTC2901-1CGN#TRPBF is designed to consume minimal power, making it suitable for battery-powered applications.
• Wide operating temperature range: It can operate reliably across a wide temperature range, from -40°C to 85°C.

Package

The LTC2901-1CGN#TRPBF is available in a compact 16-pin SSOP (Shrink Small Outline Package) package. This package provides good thermal performance and ease of integration into various circuit designs.

Essence

The essence of the LTC2901-1CGN#TRPBF lies in its ability to monitor power supply voltages and generate reset signals when necessary. It ensures stable and reliable operation of electronic systems by preventing malfunctions caused by improper voltage levels.

Packaging/Quantity

This product is typically supplied in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply voltage range: 2.7V to 6V
• Voltage threshold accuracy: ±1.5%
• Quiescent current: 20µA (typical)
• Power-on reset timeout: 200ms (typical)
• Reset output voltage: VCC - 0.3V
• Operating temperature range: -40°C to 85°C

Detailed Pin Configuration

The LTC2901-1CGN#TRPBF features a 16-pin SSOP package with the following pin configuration:

1. GND: Ground connection
2. IN1: Input for voltage monitoring channel 1
3. IN2: Input for voltage monitoring channel 2
4. TH1: Threshold setting pin for channel 1
5. TH2: Threshold setting pin for channel 2
6. RESET1: Reset output for channel 1
7. RESET2: Reset output for channel 2
8. MR: Manual reset input
9. GATE: Gate input for power-on reset
10. VCC: Positive supply voltage
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

Voltage Monitoring

The LTC2901-1CGN#TRPBF can monitor two separate power supply voltages, providing accurate voltage supervision. It compares the monitored voltages with user-defined thresholds and generates reset signals when the voltages fall below the set thresholds.

Adjustable Thresholds

By connecting external resistors to the TH1 and TH2 pins, users can easily adjust the voltage thresholds for each monitoring channel. This flexibility allows customization according to specific system requirements.

Power-On Reset

The GATE pin enables power-on reset functionality. When the GATE input is low, the LTC2901-1CGN#TRPBF holds the reset outputs in a reset state until the power supply voltage reaches a stable level. This feature ensures proper initialization of the system during power-up.

Manual Reset

The MR pin provides a manual reset input. When this pin is pulled low, it forces the reset outputs to enter a reset state, regardless of the monitored voltage levels. This feature allows for manual system reset when required.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring ensures reliable system operation.
• Adjustable thresholds provide flexibility for different applications.
• Low power consumption makes it suitable for battery-powered devices.
• Wide operating temperature range enables usage in various environments.
• Compact package facilitates integration into circuit designs.

Disadvantages

• Limited to monitoring two power supply voltages simultaneously.
• Requires external resistors for threshold adjustment.

Working Principles

The LTC2901-1CGN#TRPBF operates by continuously monitoring the voltage levels at the IN1 and IN2 inputs. It compares these voltages with the user-defined thresholds set using external resistors connected to the TH1 and TH2 pins. If any of the monitored voltages fall below the respective threshold, the corresponding RESET output is activated, generating a reset signal.

During power-up, the GATE