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TPS3805H33 Datasheet

  • TPS3805H33

  • VOLTAGE DETECTOR

  • 12頁(yè)

  • TI

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TPS3803-01, TPS3803G15, TPS3805H33
VOLTAGE DETECTOR
SLVS392 鈥?JULY 2001
features
typical applications
D
Single Voltage Detector (TPS3803):
D
D
D
D
D
D
Adjustable/1.5 V
Dual Voltage Detector (TPS3805):
Adjustable/3.3 V
High
鹵1.5%
Threshold Voltage Accuracy
Supply Current: 3
碌A(chǔ)
Typical at V
DD
= 3.3 V
Push/Pull Reset Output (TPS3805)
Open-Drain Reset Output (TPS3803)
Temperature Range . . . 鈥?0擄C to 85擄C
Five-Pin SC鈥?0 Package
D
Applications Using DSPs, Microcontrollers,
D
D
D
D
D
D
D
or Microprocessors
Wireless Communication Systems
Portable/Battery-Powered Equipment
Programmable Controls
Intelligent Instruments
Industrial Equipment
Notebook/Desktop Computers
Automotive Systems
DCK PACKAGE
(TOP VIEW)
TPS3803-01, TPS3803G15, TPS3805
description
The TPS3803 and TPS3805 families of supervi-
sory circuits provide circuit initialization and timing
supervision, primarily for DSPs and processor-
based systems.
The TPS3803G15 device has a fixed-sense
threshold voltage V
IT
set by an internal voltage
divider, whereas the TPS3803鈥?1 has an
adjustable SENSE input that can be configured by
two external resistors. In addition to the fixed
sense threshold monitored at V
DD
, the TPS3805
devices provide a second adjustable SENSE
input. RESET is asserted in case any of the two
voltages drops below V
IT.
During power on, RESET is asserted when supply
voltage V
DD
becomes higher than 0.8 V.
Thereafter, the supervisory circuit monitors V
DD
(and/or
SENSE)
and keeps RESET active as long
as V
DD
or
SENSE
remains below the threshold
voltage V
IT
. As soon as V
DD (SENSE)
rises above
the threshold voltage V
IT
,
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 five-pin SC-70 package.
The TPS3803 and TPS3805 devices are
characterized for operation over a temperature
range of 鈥?0擄C to 85擄C.
NC
GND
RESET
1
2
3
5
SENSE
NC{
4
V
DD
{
TPS3803G15
typical operating circuit
1.6 V
3.3 V
DVDD
R1
VDD
RESET
RESET
CVDD
TPS3805H33
SENSE
R2
GND
TMS320VC5416
GND
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
錚?/div>
2001, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
1

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