Product Specifications for LTC2955ITS8-1#TRPBF

Product Overview

The LTC2955ITS8-1#TRPBF is a micro-power pushbutton on/off controller designed to manage system power by generating a clean enable output from the supply monitor input and the debounced pushbutton input. It features an interrupt output that notifies the system of a pushbutton or low supply event and can be used for automatic turn-on via voltage monitor input.

Key Features

• Wide Input Supply Range: 1.5V to 36V
• Low Supply Current: 1.2µA
• ±25kV ESD HBM on PB Input
• ±36V Wide Input Voltage for PB Input
• Low Leakage EN Output for DC/DC Converter Control (LTC2955-1)
• High Voltage EN Output Drives External P-Channel MOSFET (LTC2955-2)
• Simple Interface for Graceful µP Shutdown
• Adjustable Turn-Off Timer
• 10-Lead 3mm × 2mm DFN and 8-Lead ThinSOT™ Packages
• Operating Temperature Range: –40°C to 85°C

Applications

• Desktop and Notebook Computers
• GPS Devices
• Portable Instruments
• Automotive Electronics

Pin Configuration

• VIN: Power Supply Input
• PB: Pushbutton Input
• ON: Monitor Input
• KILL: Kill Input
• EN/EN: Enable Output
• INT: Interrupt Output
• PGD: ON Status Output (DFN only)
• SEL: Mode Select Input (DFN only)
• TMR: Timer Pin
• GND: Device Ground

Electrical Characteristics

• Supply Voltage Range (VIN): 1.5V to 36V
• Supply Current (IIN): 0.5µA to 1.2µA
• Undervoltage Lockout (VUVL): 1.0V to 1.3V
• PB Input Threshold (VPB): 0.6V to 1.0V
• ON Input Threshold (VON): 0.76V to 0.84V
• KILL Input Threshold (VKILL): 0.76V to 0.84V
• EN Output High Voltage (VEN(VOH)): 1.5V to 5.5V (LTC2955-1), VIN – 1.5V (LTC2955-2)
• EN Output Low Voltage (VEN(VOL)): 0.175V to 0.4V

Ordering Information

• Part Number: LTC2955ITS8-1#TRPBF
• Package: 8-Lead Plastic TSOT-23
• Operating Temperature Range: –40°C to 85°C
• Storage Temperature Range: –65°C to 150°C
• Lead Temperature (Soldering, 10 sec): 300°C
• Lead Free Finish

Package Dimensions

• TS8 Package: 8-Lead Plastic TSOT-23Length: 2.90mmWidth: 1.95mmHeight: 0.80mm to 0.90mmLead Pitch: 0.65mm

Typical Applications

• Low Voltage Pushbutton Controller Enables Charge Pump
• Automatic Power-Up with Pushbutton On/Off
• PowerPath Control with Immediate KILL

Related Parts

• LTC2900: Programmable Quad Supply Monitor
• LTC2904/LTC2905: Pin-Programmable Dual Supply Monitors
• LTC2909: Precision Triple/Dual Input UV, OV and Negative Voltage Monitor
• LTC2910: Octal Positive/Negative Voltage Monitor
• LTC2914: Quad UV/OV Positive/Negative Voltage Monitor
• LTC2950/LTC2951: Pushbutton On/Off Controllers with Power-Down Fault Detect KILL Timer
• LTC2952: Pushbutton PowerPath Controller with Supervisor
• LTC2953: Pushbutton Controller with Voltage Monitoring
• LTC2954: Pushbutton On/Off Controller with µP Interrupt