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TC54VX29 Datasheet

  • TC54VX29

  • Voltage Detector

  • 16頁(yè)

  • MICROCHIP   MICROCHIP

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TC54
Voltage Detector
Features
鈥?Precise Detection Thresholds: Standard 鹵2.0%,
Custom 鹵1.0%
鈥?Small Packages: 3-Pin SOT-23A, 3-Pin SOT-89,
TO-92 and 5-Pin SOT-23A (7.7V only)
鈥?Low Current Drain: Typ. 1 碌A(chǔ)
鈥?Wide Detection Range: 1.1V to 6.0V and 7.7V
鈥?Wide Operating Voltage Range: 0.7V to 10V
General Description
The TC54 series are CMOS voltage detectors that are
especially well suited for battery-powered applications
because of their extremely low 1 碌A(chǔ) operating current
and small surface-mount packaging. Each part is laser-
trimmed to the desired threshold voltage, which can be
specified from 1.4V to 7.7V for a 2% tolerance and from
1.5V to 6.0V for a 1% tolerance.
The device includes a comparator, low-current high-
precision reference, laser-trimmed divider, hysteresis
circuit and output driver. The TC54 is available with
either an open-drain or complementary output stage.
During operation, the TC54's output (V
OUT
) remains in
the logic-high state as long as V
IN
is greater than the
specified threshold voltage (V
DET
鈥?. When V
IN
falls
below V
DET
鈥? the output is driven to a logic-low. V
OUT
remains low until V
IN
rises above V
DET
鈥?by an amount
V
HYST
, whereupon it resets to a logic-high.
TC54VC
only
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Battery Voltage Monitoring
Microprocessor Reset
System Brown-Out Protection
Switching Circuit in Battery Backup
Level Discriminator
Functional Block Diagram
2
V
IN
V
OUT
1
Package Types
3-Pin SOT-23A
V
IN
3-Pin SOT-89
V
IN
鈥?/div>
+
3
TC54
TC54
1
2
V
SS
1
V
OUT
2
3
V
IN
V
SS
V
REF
V
SS
3
V
OUT
3-Pin TO-92
123
TC54VN
has open-drain output.
TC54VC
has complementary output.
5-Pin SOT-23A
NC
NC
5
4
TC54
1
V
OUT
V
IN
V
SS
Note:
2
3
V
OUT
V
IN
V
SS
3-Pin SOT-23A is equivalent to the
EIAJ SC-59
5-Pin SOT-23A is equivalent to the
EIAJ SC-74A. (7.7V ONLY)
錚?/div>
2004 Microchip Technology Inc.
DS21434G-page 1

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