LTC695ISW-3.3#PBF

LTC695-3.3 is a microprocessor supervisory circuit. It provide complete 3.3V power supply monitoring and battery control functions. It include power-on reset, battery back-up, RAM write protection, power failure warning and watchdog timing. This device is pin compatible upgrades of the LTC694/LTC695 that are optimized for 3.3V systems. Operating power consumption has been reduced to 0.6mW (typical) and 3μW maximum in battery back-up mode. Microprocessor reset and memory write protection are provided when the supply falls below 2.9V. This power the active RAMs with a charge pumped NMOS power switch to achieve low dropout and low supply current. When primary power is lost, auxiliary power, connected to the battery input pin, powers the RAMs in standby through an efficient PMOS switch. It is used in application such as 3.3V low power systems. critical μP power monitoring, intelligent instruments, battery-powered computers and controllers, automotive systems etc.

• Guaranteed reset assertion at VCC = 1V
• Supply current is 200μA typical
• Precision voltage monitor is 2.90V
• Voltage monitor for power-fail or low-battery warning, thermal limiting
• Minimum external component count
• Chip enable propagation delay is 30ns typical at (CL = 20pF, TA = 25°C, VCC = 3.3V)
• Reset active time is 200ms typical at (TA = 25°C, VCC = 3.3V, VBATT = 2V)
• Supply current (exclude IOUT) is 1mA max at (OUT ≤ 50μA, VCC = 3.6V)
• Operating temperature is -40°C to 85°C
• Package style is 16-lead WSOIC

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party