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  Microchip Technology Semiconductor Electronic Components Datasheet  

TC54VCxxxx Datasheet

Voltage Detector

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M
Voltage Detector
TC54
Features
• Precise Detection Thresholds: Standard ±2.0%,
Custom ±1.0%
• Small Packages: 3-Pin SOT-23A, 3-Pin SOT-89,
5-Pin SOT-23A (7.7V only)
www.DataSheet4U.com• Low Current Drain: Typ. 1µA
• Wide Detection Range: 1.1V to 6.0V and 7.7V
• 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
Device Selection Table
Part Number
Package
Temp. Range
TC54-xxxxxxxxxxx 3-Pin SOT-23A -40°C to +85°C
TC54-xxxxxxxxxxx 3-Pin SOT-89 -40°C to +85°C
TC54-xxxxxxxxxxx 5-Pin SOT-23A -40°C to +85°C
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
3-Pin SOT-23A
VIN
2
3-Pin SOT-89
TC54
1
VOUT
3
VSS
TC54
1 23
VOUT VIN VSS
5-Pin SOT-23A
NC NC
54
TC54
1 23
VOUT VIN VSS
NOTE: 3-Pin SOT-23A is equivalent to the EIAJ SC-59.
5-Pin SOT-23A is equivalent to the EIAJ SC-74A.
General Description
The TC54 Series are CMOS voltage detectors, suited
especially for battery-powered applications because of
their extremely low 1µA operating current and small
surface-mount packaging. Each part is laser trimmed to
the desired threshold voltage which can be specified
from 1.1V to 6.0V and 7.7V, for a 2% and 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.
In operation, the TC54's 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, whereupon it resets to a logic HIGH.
Functional Block Diagram
2 TC54VC only
VIN
VOUT
1
+
VREF
TC54VN has open-drain output.
TC54VC has complementary output.
VSS
3
2002 Microchip Technology Inc.
DS21434C-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

TC54VCxxxx Datasheet

Voltage Detector

No Preview Available !

TC54
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Input Voltage ........................................................+12V
Output Current .................................................... 50mA
Output Voltage: CMOS..... (VSS – 0.3V) to (VIN + 0.3V)
Open Drain ..........(VSS – 0.3V) to 12V
Power Dissipation (TA 70°C):
3-Pin SOT-23A ...........................................240mW
3-Pin SOT-89 .............................................400mW
5-Pin SOT-23A ...........................................240mW
Operating Temperature Range............. -40°C to +85°C
www.DataSheet4US.tcoormage Temperature Range .............. -65°C to +150°C
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC54 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: TA = 25°C, unless otherwise specified.
Symbol
Parameter
Min
Typ
VIN
ISS
VDET -
VHYST
IOUT
Operating Voltage
Quiescent Current
Threshold Voltage
Hysteresis Voltage
Output Current
0.7
VDET - x 0.98
VDET - x 0.02
1.0
1.3
1.6
2.0
VDET - x 0.05
7.7
10.1
11.5
13.0
TC (VDET -) Tempco of (VDET -)
-10.0
±100
Max
10.0
3.0
3.4
3.8
4.2
VDET - x 1.02
VDET - x 0.08
Units
Test Conditions
V
µA
V
V
mA
ppm/°C
(VDET -) = 0.8 to 6.0V
VIN = 2.1V
VIN = 3.0V
VIN = 4.0V
VIN = 5.0V
VOL = 0.5V, VIN = 2.1V
VIN = 3.0V
VIN = 4.0V
VIN = 5.0V
TC54VC Only;
VOH = VIN – 2.1V, VIN = 8.0V
-40°C TA 85°C
DS21434C-page 2
2002 Microchip Technology Inc.


Part Number TC54VCxxxx
Description Voltage Detector
Maker Microchip Technology
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