TPS3809L30MDBVREP

The TPS3809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for DSPs and processor-based systems. During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage VIT-. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, td(typ)=200 ms, starts after VDD has risen above the VIT-. When the supply voltage drops below the VIT-, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense VIT- set by an internal voltage divider. The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a 3-pin SOT-23 package. The TPS3809 devices are characterized for operation over a temperature range of -55℃ to 125℃.

Applications

• Systems with DSP, microcontrollers, or microprocessors
• Wireless communication systems
• Portable/battery-powered devices
• Programmable control equipment
• Smart instrumentation
• Industrial equipment
• Laptop/desktop computers
• Automotive systems

Key features

• Controlled Baseline – One Assembly Site – One Test Site – One Fabrication Site
• Extended Temperature Performance of -55℃ to 125℃
• Enhanced Diminishing Manufacturing Sources (DMS) Support
• Enhanced Product-Change Notification
• Qualification Pedigree
• 3-Pin SOT-23 Package
• Supply Current of 9 μA (Typical)
• Precision Supply Voltage Monitor
• 2.5 V, 3 V, 3.3 V, 5 V
• Power-On Reset Generator With Fixed Delay Time of 200 ms
• Pin-for-Pin Compatible With MAX 809