LTC2953CDD-2#PBF

Product Overview

Category

The LTC2953CDD-2#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for power supply monitoring and system control applications.

Characteristics

• Power supply monitoring: The LTC2953CDD-2#PBF provides accurate monitoring of power supply voltages.
• System control: It offers various features for controlling system behavior based on power supply conditions.
• Low power consumption: The IC itself consumes very low power, making it suitable for battery-powered devices.
• Wide operating voltage range: It can operate within a wide voltage range, enhancing its versatility.
• Small package size: The LTC2953CDD-2#PBF comes in a compact DFN package, saving board space.

Package and Quantity

The LTC2953CDD-2#PBF is available in a 10-lead DFN (Dual Flat No-Lead) package. It is typically sold in reels with a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 26.5V
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 12µA (typical)
• Power-On Reset Threshold: Adjustable from 1.6V to 5.5V
• Power Fail Comparator Threshold: Adjustable from 1.6V to 5.5V
• Power Good Comparator Threshold: Adjustable from 1.6V to 5.5V
• Watchdog Timer Timeout Period: Adjustable from 1ms to 128s

Pin Configuration

The LTC2953CDD-2#PBF has a total of 10 pins arranged as follows:

1. VCC - Power supply input
2. GND - Ground reference
3. PFI - Power fail input
4. PFO - Power fail output
5. PGI - Power good input
6. PGO - Power good output
7. WDI - Watchdog timer input
8. WDO - Watchdog timer output
9. RST - System reset output
10. N/A - No connection

Functional Features

• Power-On Reset (POR): Generates a reset signal when the power supply voltage rises above the adjustable threshold.
• Power Fail Detection: Monitors the power supply voltage and asserts the power fail output when it falls below the adjustable threshold.
• Power Good Detection: Monitors the power supply voltage and asserts the power good output when it exceeds the adjustable threshold.
• Watchdog Timer: Provides a timeout function to reset the system if the watchdog input is not toggled within the adjustable timeout period.

Advantages and Disadvantages

Advantages

• Accurate power supply monitoring
• Flexible threshold adjustment
• Low power consumption
• Wide operating voltage range
• Compact package size

Disadvantages

• Limited number of pins for additional functionalities
• Requires external components for complete system integration

Working Principles

The LTC2953CDD-2#PBF operates by continuously monitoring the power supply voltage using its internal comparators. It compares the voltage against the adjustable thresholds set by the user. Based on these comparisons, it generates appropriate signals such as power fail, power good, and system reset. The watchdog timer ensures that the system remains operational by resetting it if the watchdog input is not toggled within the specified timeout period.

Detailed Application Field Plans

The LTC2953CDD-2#PBF finds applications in various fields, including but not limited to: - Battery-powered devices - Embedded systems - Industrial automation - Automotive electronics - Telecommunications equipment

Detailed and Complete Alternative Models

1. LTC2953IDD-2#PBF: Similar to LTC2953CDD-2#PBF, but available in a 10-lead MSOP (Mini Small Outline Package) instead of DFN.
2. LTC2953CMS-2#PBF: Compact version with a 10-lead MSOP package and slightly different pin configuration.
3. LTC2953HDD-2#PBF: High-temperature variant suitable for harsh environments, available in a 10-lead MSOP package.

These alternative models offer similar functionality but may differ in package type, pin configuration, or operating temperature range.

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