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LTC2951ITS8-2

Name: LTC2951ITS8-2
Rating: 4.7 (12 reviews)

Supervisory Circuits LTC2951-1/LTC2951-2 - Push Button On/Off Controller

Производитель
Мфр. Часть #LTC2951ITS8-2
Пакет
Лист данных LTC2951ITS8-2 DataSheet
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Спецификации

Обзор

Description

The LTC2951ITS8-2 is a low-power, push-button power controller designed by Analog Devices. It facilitates the controlled power-up and power-down of microcontrollers and other digital devices. This IC features a programmable delay timer for power-on, allowing for a graceful startup sequence, and it can also handle power-off sequences to ensure proper shutdown.
Key features include a voltage range of 2.7V to 15V, the ability to drive external MOSFETs for power switching, and logic-level outputs for interfacing with microcontrollers. The LTC2951ITS8-2 incorporates a low quiescent current, making it ideal for battery-operated applications. Furthermore, it has an integrated debouncing function for the push-button input, ensuring reliable operation in various conditions.
This device is commonly used in portable electronics, battery-powered systems, and any application requiring controlled power management. Its compact 8-lead TSOT-23 package allows for easy integration into space-constrained designs.

Features

The LTC2951ITS8-2 is a low-power, push-button ON/OFF controller designed for battery-powered applications. Key features include:
1. Single-Cell Operation: Supports operation from a single lithium-ion or lithium-polymer battery.
2. Ultra-Low Quiescent Current: Consumes minimal power during sleep mode, enhancing battery life.
3. Push-Button Control: Provides a simple interface for power control with a push-button switch.
4. Programmable Time Delay: Allows users to set a delay for turn-off, preventing unintended shutdowns.
5. Latching Control: Maintains the ON/OFF state even if the push-button is released.
6. Fault Protection: Includes built-in protection features, enhancing system reliability.
7. Wide Voltage Range: Operates over a voltage range suitable for various battery chemistries.
8. Compact Package: Available in an 8-lead MSOP package, facilitating space-constrained designs.
These features make the LTC2951ITS8-2 ideal for applications requiring efficient power management in portable electronic devices.

Package

The LTC2951ITS8-2 is packaged in an 8-lead MSOP (Mini Small Outline Package) with a thin profile.

Pinout

The LTC2951ITS8-2 is an ultra-low power pushbutton switch controller with a total of 8 pins. The pin functions are as follows:
1. GND - Ground connection.
2. VCC - Supply voltage input.
3. SW - Switch input, detects the state of the pushbutton.
4. OUT - Output for driving external circuitry.
5. RST - Reset output, indicates the reset condition.
6. PULLUP - Internal pull-up resistor option for the switch input.
7. R1 - External resistor connection for timing.
8. R2 - External resistor connection for additional timing or functionality.
The LTC2951 enables and manages power to a load based on pushbutton activation, allowing for efficient low-power applications.

Manufacturer

The LTC2951ITS8-2 is manufactured by Analog Devices, Inc. (ADI), which is a prominent semiconductor company specializing in data conversion, signal processing, and power management solutions. Founded in 1965, Analog Devices designs and manufactures a wide range of integrated circuits and systems for various applications, including industrial automation, automotive, communications, and consumer electronics. The company is known for its commitment to innovation and quality, providing high-performance analog, mixed-signal, and digital signal processing (DSP) solutions. ADI operates globally and serves diverse markets by enabling advanced technologies and helping customers achieve their design goals.

Application

The LTC2951ITS8-2 is a power management IC used primarily in battery-operated devices for enabling and disabling power to loads. Key application areas include portable electronics, medical devices, wearable technology, remote sensors, and IoT devices. It features low quiescent current, and its ability to control power helps extend battery life and improve efficiency in various electronic systems.

Equivalent

The LTC2951ITS8-2 is a power management and reset controller chip. Equivalent products include the TPS3808G01 from Texas Instruments, MAX6340 from Maxim Integrated, and the MIC1578 from Microchip Technology. Always verify specifications, such as voltage thresholds and package types, when considering alternatives.

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