Overview
The LTC2950CTS8-1#TRPBF, produced by Analog Devices Inc., is a micropower, wide input voltage range pushbutton ON/OFF controller. This component is designed to manage the power-on and power-off sequences of electronic systems efficiently. It features a pushbutton input with independently programmable ON and OFF timings, making it versatile for various applications. The LTC2950 is available in an 8-pin TSOT-23 package and operates over a wide voltage range from 2.7V to 26.4V, making it suitable for a broad range of power management needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 2.7V to 26.4V | V |
| Supply Current | 6µA | A |
| Package Type | 8-pin TSOT-23 | - |
| Pushbutton Input Threshold | Internal Pull Up Resistor | - |
| ESD Protection on PB Input | ±10kV HBM | V |
| KILL Comparator Input Threshold | 0.6V | V |
| Turn On Debounce Time | Minimum 32ms (tDB, ON) | ms |
| Turn Off Debounce Time | Default 32ms + external OFFT capacitor | ms |
Key Features
- Low Supply Current: The LTC2950 consumes only 6µA of supply current, making it highly energy-efficient.
- Wide Operating Voltage Range: Operates from 2.7V to 26.4V, suitable for a variety of power supply configurations.
- Programmable ON and OFF Timings: Allows for customizable turn-on and turn-off sequences using external capacitors.
- High Input Voltage PB Pin with Internal Pull Up Resistor: Ensures reliable operation of the pushbutton input.
- ESD Protection: Provides ±10kV HBM ESD protection on the PB input for enhanced reliability.
- Graceful µP Shut Down: Supports a controlled shutdown process, allowing the system to perform necessary operations before power off.
Applications
- Portable Instrumentation Meters: Ideal for battery-powered measurement devices.
- Blade Servers: Suitable for server power management due to its low power consumption and wide voltage range.
- Portable Customer Service PDA: Enhances power management in handheld devices.
- Desktop and Notebook Computers: Can be used for managing power-on and power-off sequences in personal computers.
- Adjustable Pushbutton On/Off Timers: Useful in applications requiring customizable power control.
Q & A
- What is the operating voltage range of the LTC2950?
The LTC2950 operates over a wide voltage range from 2.7V to 26.4V.
- How much supply current does the LTC2950 consume?
The LTC2950 consumes only 6µA of supply current.
- What type of package is the LTC2950 available in?
The LTC2950 is available in an 8-pin TSOT-23 package.
- What is the ESD protection level on the PB input of the LTC2950?
The PB input has ±10kV HBM ESD protection.
- How does the LTC2950 handle turn-on and turn-off debounce times?
The turn-on debounce time is a minimum of 32ms, and the turn-off debounce time is 32ms plus the time determined by an external OFFT capacitor.
- What is the purpose of the KILL comparator input in the LTC2950?
The KILL comparator input is used to initiate a controlled shutdown sequence, allowing the system to perform necessary operations before power off.
- Can the LTC2950 be used in portable devices?
Yes, the LTC2950 is suitable for portable devices due to its low power consumption and wide operating voltage range.
- How does the LTC2950 support graceful shutdown of the system?
The LTC2950 allows the system to perform necessary operations before power off by providing a controlled shutdown sequence initiated by the KILL input.
- What are some common applications of the LTC2950?
The LTC2950 is commonly used in portable instrumentation meters, blade servers, portable customer service PDAs, desktop and notebook computers, and adjustable pushbutton on/off timers.
- How does the LTC2950 handle power-on and power-off sequences?
The LTC2950 manages power-on and power-off sequences through its pushbutton input with programmable timings and the KILL comparator input for controlled shutdown.
