LTC6993-4 Datasheet

• Pulse Width Range: 1µs to 33.6 Seconds
• Configured with 1 to 3 Resistors
• Pulse Width Max Error:
  • <2.3% for Pulse Width > 512µs
  • <3.4% for Pulse Width of 8µs to 512µs
  • <4.9% for Pulse Width of 1µs to 8µs
• Four LTC6993-4 Options Available:
  • Rising-Edge or Falling-Edge Trigger
  • Retriggerable or Non-Retriggerable
• Configurable for Positive or Negative Output Pulse
• Fast Recovery Time
• 2.25V to 5.5V Single Supply Operation
• 70µA Supply Current at 10µs Pulse Width
• 500µs Start-Up Time
• CMOS Output Driver Sources/Sinks 20mA
• –55°C to 125°C Operating Temperature Range
• Available in Low Profile (1mm) SOT-23 (ThinSOT^™) and 2mm × 3mm DFN
• AEC-Q100 Qualified for Automotive Applications

• Watchdog Timer
• Frequency Discriminators
• Missing Pulse Detection
• Envelope Detection
• High Vibration, High Acceleration Environments
• Portable and Battery-Powered Equipment

The LTC6993-4 is a monostable multivibrator (also known as a “one-shot” pulse generator) with a programmable pulse width of 1µs to 33.6 seconds. The LTC6993-4 is part of the TimerBlox^® family of versatile silicon timing devices.

A single resistor, R_SET, programs an internal master oscillator frequency, setting the LTC6993-4’s time base. The output pulse width is determined by this master oscillator and an internal clock divider, N_DIV, programmable to eight settings from 1 to 2²¹.

The output pulse is initiated by a transition on the trigger input (TRIG). Each part can be configured to generate positive or negative output pulses. The LTC6993-4 is available in four versions to provide different trigger signal polarity and retrigger capability.

The LTC6993-4 also offers the ability to dynamically adjust the width of the output pulse via a separate control voltage.