TPS3805H33MDCKREP ,Enhanced Product Dual Voltage Detectors 5-SC70 -55 to 125BLOCK DIAGRAMTPS3803G15 TPS3803−01DeviceVDDSupply VoltageR1RESET_ RESETVDD _SENSE++R2GNDGNDReferenc ..
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TPS3805H33MDCKREP-TPS3805H33QDCKREP-V62/04648-03XE-V62/04648-06XE
Enhanced Product Dual Voltage Detectors
FEATURES Controlled Baseline
− One Assembly/Test Site, One Fabrication
Site Extended Temperature Performance of Up to
−55°C to +125°C Enhanced Diminishing Manufacturing
Sources (DMS) Support Enhanced Product-Change Notification Qualification Pedigree(1) Single Voltage Detector (TPS3803):
Adjustable/1.5 V Dual Voltage Detector (TPS3805):
Adjustable/3.3 V High ±1.5% Threshold Voltage Accuracy Supply Current: 3 µA Typical at VDD = 3.3 V Push/Pull Reset Output (TPS3805) Open-Drain
Reset Output (TPS3803) 5-Pin SC−70 Package(1) Component qualification in accordance with JEDEC and industry
standards to ensure reliable operation over an extended
temperature range. This includes, but is not limited to, Highly
Accelerated Stress Test (HAST) or biased 85/85, temperature
cycle, autoclave or unbiased HAST, electromigration, bond
intermetallic life, and mold compound life. Such qualification
testing should not be viewed as justifying use of this component
beyond specified performance and environmental limits.
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
DESCRIPTIONThe TPS3803 and TPS3805 families of supervisory circuits
provide circuit initialization and timing supervision, primarily
for DSPs and processor-based systems.
The TPS3803G15 device has a fixed-sense threshold voltage
VIT set by an internal voltage divider, whereas the
TPS3803−01 has an adjustable SENSE input that can be
configured by two external resistors. In addition to the fixed
sense threshold monitored at VDD, the TPS3805 devices
provide a second adjustable SENSE input. RESET is
asserted in case any of the two voltages drops below VIT.
During power on, RESET is asserted when supply voltageDD becomes higher than 0.8 V. Thereafter, the supervisory
circuit monitors VDD (and/or SENSE) and keeps RESET
active as long as VDD or SENSE remains below the threshold
voltage VIT . As soon as V (SENSE) rises above the
threshold voltage VIT , RESET is deasserted again. The
product spectrum is designed for 1.5 V, 3.3 V, and adjustable
supply voltages. The devices are available in a 5-pin SC-70
package.
DCK PACKAGE
(TopView)NC
GND
RESET
(1)NC =No Connectionon
TPS3803G15VDD
SENSE
NC(1)
TPS3803−01, TPS3803G15,TPS3805
Typical Operating Circuit3.3V1.6V
www.ti.com
TPS3803-01-EP
TPS3803G15-EP
TPS3805H33-EPSGLS227C − DECEMBER 2003 − REVISED JUNE 2007
VOLT AGE
DETECTOR
