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Features
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TC53
Voltage Detector
General Description
The TC53 is a low power voltage detector. Typical
supply current consumption is only 1µA at an input
voltage of 2V. The voltage detection threshold setting is
factory-programmed and guaranteed to ±2% accuracy.
Threshold settings are available over a range of 1.6V
to 6.0V. The TC53 has both complementary (CMOS)
and open drain (NMOS) output configuration options.
TC53 is the ideal voltage detector for precision
applications in which small size, low installed cost, high
accuracy and low supply current consumption are
critical.
Highly Accurate: ±2%
Low Power Consumption: 1.0µA, Typ.
Detect Voltage Range: 1.6V to 6.0V and 7.7V
Operating Voltage: 1.5V to 10.0V
Output Configuration: Open-Drain or CMOS
Space-Saving 5-Pin SOT-23A Package
Typical Applications
• Microprocessor Reset Circuits
• Battery Life Monitors and Recharge Voltage
Monitors
• Memory Battery Backup Circuitry
• Power-On Reset Circuits
• Power Failure Detection
• Delay Circuitry
Functional Block Diagram
1) CMOS Output
V
IN
Device Selection Table
Part Number
TC53-xxxxxxxxxx
Package
Temp. Range
V
OUT
5-Pin SOT-23A -40°C to +85°C
V
REF
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
5-Pin SOT-23A
NC
5
NC
4
V
OUT
V
SS
2) N-Channel
Open Drain Output
V
IN
TC53
1
V
OUT
2
V
IN
3
V
SS
V
SS
V
REF
2002 Microchip Technology Inc.
DS21432B-page 1
TC53
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Input Voltage ........................................................+12V
Output Current ....................................................50mA
Output Voltage.......................V
IN
+ 0.3V to V
SS
– 0.3V
Power Dissipation
5-Pin SOT-23A ...........................................240mW
Operating Temperature Range.............-40°C to +85°C
Storage Temperature Range ..............-40°C to +125°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.
TC53 ELECTRICAL SPECIFICATIONS
Electrical Characteristics:
T
A
= 25°C, unless otherwise specified. Note 1, Note 2.
Symbol
V
DF
V
HYS
I
SS
Parameter
Detect Voltage
Hysteresis Range
Supply Current
Min
V
T
x 0.98
V
DF
x 0.02
—
—
—
—
—
1.5
—
—
—
—
—
—
∆
V
DF
/
(
∆
T
OPR
V
DF
)
Typ
V
T
±0.5%
V
DF
x 0.05
0.9
1.0
1.3
1.6
2.0
—
2.2
7.7
10.1
11.5
13.0
-10.0
±100
—
Max
V
T
x 1.02
V
DF
x 0.08
2.6
3.0
3.4
3.8
4.2
10.0
—
—
—
—
—
—
—
0.2
Units
V
V
µ
A
Test Conditions
Note 3
V
IN
= 1.5V
V
IN
= 2.0V
V
IN
= 3.0V
V
IN
= 4.0V
V
IN
= 5.0V
V
DF
= 2.1 to 6.0V
N-ch; V
DS
= 0.5V, V
IN
= 1.0V
V
IN
= 2.0V
V
IN
= 3.0V
V
IN
= 4.0V
V
IN
= 5.0V
P-ch; V
DS
= 2.1V,
(CMOS Output)
V
IN
= 8.0V
V
IN
I
OUT
Operating Voltage
Output Current
V
mA
Temperature Characteristics
Delay Time
(V
DR
→
V
OUT
Inversion)
—
—
ppm/°C
msec
t
DLY
Note
1:
2:
3:
An additional resistor between the V
IN
pin and the supply voltage may alter the electrical characteristics due to the increasing values of
V
DR
.
The power consumption during power-start to output being stable (release operation) is 2
µ
A greater than it is after that period
(completion of release operation) because of rush current in the delay circuit.
V
T
is the factory-programmed voltage detection threshold.
DS21432B-page 2
2002 Microchip Technology Inc.
TC53
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
Pin No.
(5-Pin SOT-23A)
1
2
3
4
5
PIN FUNCTION TABLE
Symbol
V
OUT1
V
IN
V
SS
NC
NC
Output.
Supply voltage input.
Ground terminal.
Not connected.
Not connected.
Description
3.0
DETAILED DESCRIPTION
TIMING DIAGRAM
Input Voltage (V
IN
)
Detect Release Voltage (V
DR
)
Detect Voltage (V
DF
)
FIGURE 3-1:
Minimum Operating Voltage (V
MIN
)
Ground Voltage (V
SS
)
Output Voltage (V
OUT
)
Ground Voltage (V
SS
)
2002 Microchip Technology Inc.
DS21432B-page 3
TC53
4.0
4.1
PACKAGING INFORMATION
Package Marking Information
2
represents first decimal of output voltage
Symbol
Voltage
.0
.1
.2
.3
.4
.5
.6
.7
.8
.9
3
1
represents output configuration and first integer
of voltage
Symbol
A
B
C
D
E
F
H
Output
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
Voltage
0.
1.
2.
3.
4.
5.
6.
0
1
2
3
4
5
6
7
8
9
3
represents delay function and delay time
3 = no delay function
represents assembly lot code
4
Symbol
K
L
M
N
P
R
S
Output
Nch
Nch
Nch
Nch
Nch
Nch
Nch
Voltage
0.
1.
2.
3.
4.
5.
6.
DS21432B-page 4
2002 Microchip Technology Inc.
TC53
4.2
Taping Form
Component Taping Orientation for 5-Pin SOT-23A (EIAJ SC-74A) Devices
User Direction of Feed
Device
Marking
W
PIN 1
P
Standard Reel Component Orientation
TR Suffix Device
(Mark Right Side Up)
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
5-Pin SOT-23A
8 mm
4 mm
3000
7 in
4.3
Package Dimensions
SOT-23A-5
.075 (1.90)
REF.
.122 (3.10)
.098 (2.50)
.020 (0.50)
.012 (0.30)
PIN 1
.122 (3.10)
.106 (2.70)
.057 (1.45)
.035 (0.90)
.006 (0.15)
.000 (0.00)
.071 (1.80)
.059 (1.50)
.037 (0.95)
REF.
10° MAX.
.024 (0.60)
.004 (0.10)
.010 (0.25)
.004 (0.09)
Dimensions: inches (mm)
2002 Microchip Technology Inc.
DS21432B-page 5
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