TPS3307-33D

The TPS3307 family is a series of micropower supply voltage supervisors designed for circuit initialization primarily in DSP and processor-based systems, which require more than one supply voltage. The product spectrum of the TPS3307-xx is designed for monitoring three independent supply voltages: 3.3V/1.8V/adj, 3.3V/2.5V/adj or 3.3V/5V/adj. The adjustable SENSE input allows the monitoring of any supply voltage >1.25V. During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1V. Thereafter, the supply voltage supervisor monitors the SENSE n inputs and keeps RESET active as long as SENSEn remain below the threshold voltage VΠ+. An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system reset. The delay time, Δtd(typ)=200ms, starts after all SENSEn inputs have risen above the threshold voltage VΠ+. When the voltage at any SENSE input drops below the threshold voltage VIT-, the RESET output becomes active (low) again. The TPS3307-xx family of devices incorporates a manual reset input, MR. A low level at MR causes RESET to become active. In addition to the active-low RESET output, the TPS3307-xx family includes an active-high RESET output. The devices are available in either 8-pin MSOP or standard 8-pin SO packages. devices are characterized for operation over a temperature range of -40°C to +85°C SUPPLY VOLTAGE MONITORING sense voltage has to be adjusted by an external resistor divider according to the application requirement

Key features

• Triple Supervisory Circuits for DSP and Processor-Based Systems
• Power-On Reset Generator With Fixed Delay Time of 200ms, No External Capacitor Needed
• Temperature-Compensated Voltage Reference
• Maximum Supply Current of 40μμ
• Supply Voltage Range: 2V to 6V
• Defined RESET Output From VDD ≥ 1.1V
• MSOP-8 and SO-8 Packages
• Temperature Range: –40°C to +85°C