LTC6991HS6#WTRMPBF

LTC6991 is a timerblox, resettable, low frequency oscillator. A single resistor, RSET, programs the device’s internal oscillator frequency. In normal operation, the device oscillates with a 50% duty cycle. A reset function is provided to truncate the pulse (reducing the duty cycle). The reset pin can also be used to prevent the output from oscillating. The RST and OUT pins can be configured for active-low or active-high operation using a polarity function. It is widely used in application such as heartbeat timers, watchdog timers, intervalometers, periodic “wake-up” call, high vibration, high acceleration environments, portable and battery-powered equipment etc.

• Period range is 1ms to 9.5 hours
• Configured with 1 to 3 resistors
• Frequency error is 1.5% maximum
• Output reset function
• Single supply operation is 2.25V to 5.5V
• Supply current is 135µA typical at (RL = ∞, RSET = 50k V+ = 5.5V)
• Clock period is 2ms to 9.5hr
• Start-up time is 500µs, CMOS output driver sources/sink is 20mA typical
• Operating temperature is -40°C to 125°C, AEC-Q100 qualified for automotive applications
• Package style is 6-lead plastic TSOT-23

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