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TC54VN4302ECB713 数据手册 - Telcom Semiconductor
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TC54VN4302ECB713数据手册
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© 2007 Microchip Technology Inc. DS21434H-page 1
TC54
Features
• ±2.0% Detection Thresholds
• Small Packages: 3-Pin SOT-23A, 3-Pin SOT-89,
and TO-92
• Low Current Drain: 1 µA (Typical)
• Wide Detection Range: 1.1V to 6.0V
• Wide Operating Voltage Range: 0.7V to 10V
Applications
• Battery Voltage Monitoring
• Microprocessor Reset
• System Brown-Out Protection
• Switching Circuit in Battery Backup
• Level Discriminator
Functional Block Diagram
General Description
The TC54 series are CMOS voltage detectors that are
especially well suited for battery-powered applications
because of their extremely low 1 µA 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 6.0V with a 2% tolerance.
The TC54 is available with either an open-drain or com-
plementary 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
–
). When V
IN
falls below V
DET
–
, the output is
driven to a logic-low. V
OUT
remains low until V
IN
rises
above V
DET
–
by an amount V
HYST
, whereupon it
resets to a logic-high.
Package Types
Device Features
V
OUT
TC54VC only
V
SS
+
–
V
IN
TC54VN has open-drain output.
TC54VC has complementary(push-pull) output.
V
REF
1 32
V
IN
V
SS
V
OUT
TC54
3-Pin SOT-89
Note: 3-Pin SOT-23A is equivalent to the
EIAJ SC-59
3-Pin TO-92
123
V
SS
V
IN
V
OUT
V
IN
V
OUT
V
SS
3
12
TC54
3-Pin SOT-23A
V
IN
Device
Output
Reset Delay Std. Trip Points
(1)
(typical)
Type State
TC54VN Open-Drain Active Low No 1.4V, 2.1V, 2.7V, 2.9V
TC54VC Push-Pull Active Low No 3.0V, 4.2V, 4.3V
Note 1: Custom Trip Points available. Minimum order requirement. Information available upon request.
Voltage Detector
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