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TC54VN2902EMB713 Datasheet(PDF) 1 Page - Microchip Technology

Part No. TC54VN2902EMB713
Description  Voltage Detector
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Maker  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
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 2001-2011 Microchip Technology Inc.
DS21434J-page 1
TC54
Features
• ±2.0% Detection Thresholds
• Small Packages: 3-Pin SOT-23A, 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 output
(VOUT) remains in the logic-high state as long as VIN is
greater than the specified threshold voltage (VDET –).
When VIN falls below VDET –, the output is driven to a
logic-low. VOUT remains low until VIN rises above
VDET – by an amount VHYST, when it resets to a logic-
high state.
Package Types
Device Features
VOUT
VSS
+
VIN
VREF
TC54VC only
TC54VN has open-drain output.
TC54VC has complementary (push-pull) output.
1
3
2
VIN VSS
VOUT
TC54
3-Pin SOT-89
Note:
3-Pin SOT-23A is equivalent to the
EIAJ SC-59.
3-Pin TO-92
12 3
VSS
VIN
VOUT
VIN
VOUT
VSS
3
12
TC54
3-Pin SOT-23A
VIN
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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