TPS3705 Texas instruments

TPS3705

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TPS3705

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Описание

The TPS370x-xx family of microprocessor supply-voltage supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage VIT+. When the supply voltage drops below the threshold voltage VIT–, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage 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 either 8-pin MSOP or standard SOIC packages. The TPS370x-xx devices are characterized for operation over a temperature range of −40°C to 85°C.

Power-on reset generator with fixed delay time of 200 ms (no external capacitor needed)
Precision supply voltage monitor: 2.5 V, 3 V, 3.3 V, and 5 V
Pin-for-pin compatible with the MAX705 through MAX708 Series
Integrated watchdog time (TPS3705-xx Only)
Voltage monitor for power-fail or low-battery warning
Maximum supply current of 50 µA
8-Pin MSOP and 8-Pin SOIC packages
Temperature range: –40°C to 85°C (–40°C to 125°C for TPS3705-33)

Number of supplies monitored	2
Threshold voltage 1 (typ) (V)	2.63, 2.93, 4.55
Features	Manual reset capable, PFI/PFO, Watchdog timer
Reset threshold accuracy (%)	3
Iq (typ) (mA)	0.03
Output driver type/reset output	Active-low, Push-Pull
Time delay (ms)	200
Supply voltage (min) (V)	2
Supply voltage (max) (V)	6
Rating	Catalog
Watchdog timer WDI (s)	1.6
Monitored voltage 1 (nom) (V)	3, 3.3, 5
Operating temperature range (°C)	-40 to 125, -40 to 85