TPS3801 Texas instruments

TPS3801

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TPS3801

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Описание

The TPS380x family of supervisory circuits monitor supply voltages to provide circuit initialization and timing supervision, primarily for DSPs and other processor-based systems. These devices assert a push-pull RESET signal when the SENSE (adjustable version) or VDD (fixed version) drops below a preset threshold. The RESET output remains asserted for the factory programmed delay time after the SENSE or VDD return above its threshold. The TPS380x devices, except the TPS3801-01, incorporate a manual reset input (MR). A low level at MR causes RESET to become active. The TPS380x uses a precision reference to achieve an overall threshold accuracy of 2%—2.5%. These devices are available in a 5-pin SC-70 package, which is only about half the size of a 5-pin SOT-23 package. The TPS380x devices are fully specified over a temperature range of –40°C to +85°C.

Small, 5-Pin SC-70 (SOT-323) Package
Supply Current of 9 µA
Power-On Reset Generator With Fixed Delay Time
- TPS3800 = 100 ms
- TPS3801 = 200 ms
- TPS3802 = 400 ms
Precision Supply Voltage Monitor 1.8 V, 2.5 V,
2.7 V, 3 V, 3.3 V, 5 V, and Adjustable
Manual Reset Input (Except TPS3801-01)
Temperature Range: –40°C to +85°C
APPLICATIONS
- Applications Using DSPs, Microcontrollers, or Microprocessors
- Wireless Communication Systems
- Portable/Battery-Powered Equipment
- Programmable Controls
- Intelligent Instruments
- Industrial Equipment
- Notebook/Desktop Computers
- Automotive Systems

All other trademarks are the property of their respective owners.

Number of supplies monitored	1
Threshold voltage 1 (typ) (V)	1.71, 2.25, 2.64, 2.93, 4, 4.55, Adjustable
Features	Manual reset capable
Reset threshold accuracy (%)	2
Iq (typ) (mA)	0.009
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)	None
Monitored voltage 1 (nom) (V)	1.8, 2.5, 3, 3.3, 5, Adjustable
Operating temperature range (°C)	-40 to 85