ULTRA-SMALL SUPPLY VOLTAGE SUPERVISORS
Features
• 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
DESCRIPTION/ORDERING INFORMATION
The TPS380x family of supervisory circuits monitor supply voltages to provide circuit initialization and
timing supervision, primarily for DSPs and other pro-cessor-basedsystems.
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 timeafter the SENSE or VDD returnaboveits threshold.
The TPS380x devices, except the TPS3801-01, incor porate a manual reset input (MR). A low level at MR causes RESET tobecomeactive.
The TPS380x uses a precision reference to achieve an overallthresholdaccuracyof2% -2.5%. Thesedevices are available in a 5-pin SC-70 package, which is only abouthalfthesizeofa5-pin SOT-23package.
The TPS380x devices are fully specified over a temperaturerangeof -40°C to85°C
| ABSOLUTE MAXIMUM RATINGS(1) |
| Supply voltage, VDD 7 V All other pins -0.3 V to 7 V Maximum low-output current, IOL 5 mA Maximum high-output current, IOH -5 mA Input-clamp current, I IK (VI < 0 or VI > VDD) ±20 mA Output-clamp current, IOK (VO < 0 or VO > VDD) ±20 mA Operating junction temperature range, TJ (3) -40°C to 85°C Storage temperature range, Tstg -65°C to 150°C Soldering temperature (3 seconds) 260°C |
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