MICROCHIP TC54VC2702EZB713

TC54
Voltage Detector
Features
General Description
• ±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
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 lasertrimmed to the desired threshold voltage, which can be
specified from 1.4V to 6.0V with a 2% tolerance.
Applications
•
•
•
•
•
Battery Voltage Monitoring
Microprocessor Reset
System Brown-Out Protection
Switching Circuit in Battery Backup
Level Discriminator
The TC54 is available with either an open-drain or complementary output stage. During 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.
Package Types
Functional Block Diagram
TC54VC only
3-Pin SOT-23A
VIN
3-Pin SOT-89
VIN
3
VIN
TC54
TC54
VOUT
–
1
VOUT
+
VREF
2
VSS
1
2
3
VOUT VIN VSS
3-Pin TO-92
123
VSS
TC54VN has open-drain output.
TC54VC has complementary(push-pull) output.
VOUT VIN VSS
Note:
3-Pin SOT-23A is equivalent to the
EIAJ SC-59
Device Features
Output
Reset Delay
Std. Trip Points(1) (typical)
Active Low
No
1.4V, 2.1V, 2.7V, 2.9V
Active Low
No
3.0V, 4.2V, 4.3V
Device
Type
State
TC54VN
Open-Drain
TC54VC
Push-Pull
Note 1:
Custom Trip Points available. Minimum order requirement. Information available upon request.
© 2007 Microchip Technology Inc.
DS21434H-page 1
TC54
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
Input Voltage ...................................................................+12V
† 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.
Output Current ..............................................................50 mA
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 .......................................................240 mW
3-Pin SOT-89..........................................................500 mW
5-Pin SOT-23A .......................................................240 mW
3-Pin TO-92 ............................................................300 mW
Operating Temperature Range........................-40°C to +85°C
Storage Temperature Range .........................-65°C to +150°C
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise noted, TA = +25°C.
Parameter
Operating Voltage
Quiescent Current
Threshold Voltage
(Note 1)
Hysteresis Voltage
Output Current
Tempco of (VDET–)
Delay Time
Note 1:
Sym
Min
Typ
Max
Units
VIN
0.7
—
10.0
V
(VDET –) ≥ 1.6V
0.7
—
6.0
V
(VDET –) < 1.6V
—
0.8
2.7
µA
VIN = 2.0V
—
0.9
3.0
VIN = 3.0V
—
1.0
3.2
VIN = 4.0V
ISS
VDET –
VHYST
IOUT
Test Conditions
VIN = 5.0V
—
1.1
3.6
1.37
1.4
1.43
2.06
2.1
2.14
TC54VX21
2.65
2.7
2.75
TC54VX27
2.84
2.9
2.96
TC54VX29
2.94
3.0
3.06
TC54VX30
4.12
4.2
4.28
TC54VX42
4.21
4.3
4.39
TC54VX43
V
28
70
112
42
105
168
VDET = 2.1V (typical)
54
135
216
VDET = 2.7V (typical)
58
145
232
VDET = 2.9V (typical)
60
150
240
VDET = 3.0V (typical)
84
210
336
VDET = 4.2V (typical)
86
215
344
3.0
7.7
—
5.0
10.1
—
VOL = 0.5V, VIN = 3.0V
6.0
11.5
—
VOL = 0.5V, VIN = 4.0V
VOL = 0.5V, VIN = 5.0V
7.0
13.0
—
—
-10.0
-2.0
TC (VDET –)
—
±100
—
tDLY
—
—
0.2
mV
TC54VX14
VDET = 1.4V (typical)
VDET = 4.3V (typical)
mA
VOL = 0.5V, VIN = 2.0V
TC54VC Only:
VOH = VIN – 2.1V, VIN = 8.0V
ppm/°C -40°C ≤ TA ≤ 85°C
ms
VDET – → VOUT inversion
For other voltage options, please contact your regional Microchip sales office.
DS21434H-page 2
© 2007 Microchip Technology Inc.
TC54
VDET –+VHYST
VDET
VDD
tDLY
OUTPUT
FIGURE 1-1:
VOH
Timing Diagram.
© 2007 Microchip Technology Inc.
DS21434H-page 3
TC54
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin No.
(3-Pin SOT-23A)
2.1
Pin No.
(3-Pin SOT-89)
Pin No.
(3-Pin TO-92)
Symbol
1
1
1
VOUT
Digital Output
3
2
2
VIN
Analog Input
2
3
3
VSS
Ground Terminal
—
Tab
—
VIN
Analog Input
Digital Output (VOUT)
VOUT goes low when VIN drops below VDET – and
returns high when VIN rises above VDET – + VHYST.
(See Figure 3-1).
2.3
Analog Input (VIN)
Ground Terminal (VSS)
VSS provides the negative reference for the analog
input voltage. Typically, the circuit ground is used.
2.4
2.2
Description
No Connect (NC)
No internal connection.
VIN can be used for power supply monitoring or a
voltage level that requires monitoring.
DS21434H-page 4
© 2007 Microchip Technology Inc.
TC54
3.0
DETAILED DESCRIPTION
In normal steady-state operation when VIN > VDET –,
the output will be at a logic-high (see Figure 3-1). In
the case of the TC54VN, this is an open-drain
condition. If the input falls below VDET –, the output
will pull down (Logic 0) to VSS. Generally, VOUT can
pull down to within 0.5V of VSS at rated output current
and input voltage. (See Section 1.0 “Electrical
Characteristics”).
VIN
The output (VOUT) will stay valid until the input voltage
falls below the minimum operating voltage (VINMIN) of
0.7V. Below this minimum operating voltage the output
is undefined. During power-up (or anytime VIN has
fallen below VINMIN), VOUT will remain undefined until
VIN rises above VINMIN. Once this occurs, the output
will become valid. VOUT will be in its active-low state,
while VINMIN < VIN < VDET+ (therefore, VDET + = VDET –
+ VHYST). If the input rises above VDET+, the output will
assume its inactive state (high for TC54VC, open-drain
for TC54VN).
VDET +
VHYST
Release Voltage
or RESET Voltage
Detect Voltage VDET –
Minimum Operating
Voltage
Ground Level
VOUT
Output Voltage
Ground Level
FIGURE 3-1:
Timing Diagram.
© 2007 Microchip Technology Inc.
DS21434H-page 5
TC54
4.0
APPLICATIONS INFORMATION
4.1
Modifying the Trip Point, VDET –
Although the TC54 has a pre-programmed VDET –, it is
sometimes necessary to make adjustments during
prototyping. This can be accomplished by connecting
an external resistor divider to a TC54, which has a
VDET – lower than that of VSOURCE (Figure 4-1).
To maintain detector accuracy, the bleeder current
through the divider should be significantly higher than
the 1 µA operating current required by the TC54. A
reasonable value for this bleeder current is 100 µA (100
times the 1 µA required by the TC54). For example, if
VDET – = 2V and the desired trip point is 2.5V, the value
of R1 + R2 is 25 kΩ (2.5V/100 µA). The value of R1 + R2
can be rounded to the nearest standard value and
plugged into the equation of Figure 4-1 to calculate
values for R1 and R2. 1% tolerance resistors are
recommended.
4.2
Other Applications
Low operating power and small physical size make the
TC54 series ideal for many voltage detector
applications, such as those shown in Figures 4-2, 4-3
and 4-4. Figure 4-2 shows a low-voltage gate drive
protection circuit that prevents overheating of the logiclevel MOSFET due to insufficient gate voltage. When
the input signal is below the threshold of the TC54VN,
its output grounds the gate of the MOSFET. Figure 4-3
and Figure 4-4 show the TC54 in conventional voltage
monitoring applications.
4.3V
270Ω
VCC
VIN
RL
VOUT
TC54VX
MTP3055EL
VSOURCE
VSS
R2
VIN
R1
TC54
VOUT
VSS
FIGURE 4-2:
Protection.
MOSFET Low Drive
+
VIN
–
TC54VX
VOUT
R1
V SOURCE = ------------------- = V DET R1 + R2
VSS
Where:
VSOURCE
VDET –
Note:
=
Voltage to be monitored
=
Threshold Voltage setting of
TC54
BATLOW
FIGURE 4-3:
Battery Voltage Monitor.
In this example, VSOURCE must be
greater than (VDET –)
FIGURE 4-1:
Modify Trip-point of the
TC54 using External Resistor Divider.
VIN
+
Pwr
Sply
TC54VX
VOUT
Power Good
–
VSS
FIGURE 4-4:
DS21434H-page 6
Power Good Monitor.
© 2007 Microchip Technology Inc.
TC54
5.0
PACKAGING INFORMATION
5.1
Package Marking Information
3-Pin SOT-23A
3-Pin TO-92
3-Pin SOT-89
2
4
1 2 3 4
1
2
3
4
1
5 6 7 8
3
1 , 2 ,& 3
1
represents output configuration (CMOS or Nch)
and first integer of voltage
Ex: CMOS 3.x =
2
D
Symbol
Output
Voltage
B
CMOS
1.
C
CMOS
2.
D
CMOS
3.
E
CMOS
4.
F
CMOS
5.
H
CMOS
6.
5
I
CMOS
7.
Symbol
Output
Voltage
L
Nch
1.
M
Nch
2.
N
Nch
3.
P
Nch
4.
R
Nch
5.
S
Nch
6.
T
Nch
7.
6
represents first decimal of output voltage (0-9)
Ex: CMOS 3.x =
D 4
Symbol
Voltage
Symbol
Voltage
0
.0
6
.6
1
.1
7
.7
2
.2
8
.8
3
.3
9
.9
4
.4
5
.5
)
3
4
&
4
represents assembly lot code
© 2007 Microchip Technology Inc.
7
8
= 54X (fixed)
represents output configuration (CMOS or Nch)
Ex: CMOS 3.x = C
Symbol
Output
C
CMOS
N
N-Channel
represents first integer of detect voltage
Symbol
Voltage
2
2.
3
3.
4
4.
5
5.
6
6.
represents first decimal of detect voltage
Symbol
Voltage
Symbol
Voltage
0
.0
5
.5
1
.1
6
.6
2
.2
7
.7
3
.3
8
.8
4
.4
9
.9
represents the output Delay Time
Symbol
Delay Time
0
No Delay
represents the device accuracy
Symbol
Accuracy
1
±1.0% (custom)
2
±2.0% (standard)
DS21434H-page 7
TC54
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DS21434H-page 9
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DS21434H-page 10
© 2007 Microchip Technology Inc.
TC54
APPENDIX A:
REVISION HISTORY
Revision H (December 2007)
• Updated Features section.
• Removed 5-Pin SOT-23 related information.
• Updated Output Current (IOUT) Electrical
Specification.
• Removed 7.7V (typical) Voltage Trip Point Option.
Max Trip Point Voltage is now 6.0V.
• Updated Pin Function Table.
• Updated Packaging Specification Information.
• Added Revision History section.
• Updated Product Identification System page.
Revision G (August 2004)
• Undocumented changes.
Revision F (July 2004)
• Undocumented changes.
Revision E (April 2003)
• Undocumented changes.
Revision D (October 2002)
• Undocumented changes.
Revision C (July 2002)
• Undocumented changes.
Revision B (May 2002)
• Undocumented changes.
Revision A (March 2001)
• Original Release of this Document.
© 2007 Microchip Technology Inc.
DS21434H-page 11
TC54
NOTES:
DS21434H-page 12
© 2007 Microchip Technology Inc.
TC54
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PART NO.
Device
X
XX
X
X
X
XX
XX
Output Detected Extra Tolerance Temp. Pkg Taping
Config. Voltage Feature
Direction
Code
Device:
TC54V:
Output Configuration:
N
C
Voltage Detector
Examples:
a)
b)
= Nch Open-Drain
= CMOS Output
c)
Detected Voltage:
14
21
27
29
30
42
43
=
=
=
=
=
=
=
1.4V
2.1V
2.7V
2.9V
3.0V
4.2V
4.3V
d)
e)
Extra Feature Code:
0
= Fixed
Tolerance:
2
= 2%
Temperature:
E
= -40°C to +85°C
f)
g)
Package:
Taping Direction:
CB = Plastic Small Outline Transistor, SOT-23A,
3-lead,
MB = Plastic Small Outline Transistor, SOT-89, 3-lead,
ZB = Plastic Transistor Outline, TO-92, 3-lead
h)
713 = Standard Taping
i)
© 2007 Microchip Technology Inc.
TC54VC1402ECB713: Tape and Reel,
1.4V Voltage
Detector, 2% Tol.,
SOT-23A-3.
TC54VC1402EMB713: Tape and Reel,
1.4V Voltage
Detector, 2% Tol.,
SOT-89-3.
TC54VC1402EZB:
1.4V Voltage
Detector, 2% Tol.,
TO-92.
TC54VC2102ECB713: Tape and Reel,
2.1V Voltage
Detector, 2% Tol.,
SOT-23A-3.
TC54VC2102EMB713: Tape and Reel,
2.1V Voltage
Detector, 2% Tol.,
SOT-89-3.
TC54VC2102EZB:
2.1V Voltage
Detector,
2% Tol., TO-92.
TC54VC2702ECB713: Tape and Reel,
2.7V Voltage
Detector, 2% Tol.,
SOT-23A-3.
TC54VC3002ECB713: Tape and Reel,
3.0V Voltage
Detector, 2% Tol.,
SOT-23A-3.
TC54VN4202ECB713: Tape and Reel,
4.2V Voltage
Detector,2% Tol.,
SOT-23A-3.
DS21434H-page 13
TC54
NOTES:
DS21434H-page 14
© 2007 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, KEELOQ logo, microID, MPLAB, PIC,
PICmicro, PICSTART, PRO MATE, rfPIC and SmartShunt are
registered trademarks of Microchip Technology Incorporated
in the U.S.A. and other countries.
AmpLab, FilterLab, Linear Active Thermistor, Migratable
Memory, MXDEV, MXLAB, SEEVAL, SmartSensor and The
Embedded Control Solutions Company are registered
trademarks of Microchip Technology Incorporated in the
U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi,
MPASM, MPLAB Certified logo, MPLIB, MPLINK, PICkit,
PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal,
PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select
Mode, Smart Serial, SmartTel, Total Endurance, UNI/O,
WiperLock and ZENA are trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2007, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
© 2007 Microchip Technology Inc.
DS21434H-page 15
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India - Bangalore
Tel: 91-80-4182-8400
Fax: 91-80-4182-8422
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
India - Pune
Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Atlanta
Duluth, GA
Tel: 678-957-9614
Fax: 678-957-1455
Boston
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Chicago
Itasca, IL
Tel: 630-285-0071
Fax: 630-285-0075
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
Detroit
Farmington Hills, MI
Tel: 248-538-2250
Fax: 248-538-2260
Kokomo
Kokomo, IN
Tel: 765-864-8360
Fax: 765-864-8387
Los Angeles
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
Santa Clara
Santa Clara, CA
Tel: 408-961-6444
Fax: 408-961-6445
Toronto
Mississauga, Ontario,
Canada
Tel: 905-673-0699
Fax: 905-673-6509
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
China - Beijing
Tel: 86-10-8528-2100
Fax: 86-10-8528-2104
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
China - Fuzhou
Tel: 86-591-8750-3506
Fax: 86-591-8750-3521
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Taiwan - Hsin Chu
Tel: 886-3-572-9526
Fax: 886-3-572-6459
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
China - Shunde
Tel: 86-757-2839-5507
Fax: 86-757-2839-5571
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
10/05/07
DS21434H-page 16
© 2007 Microchip Technology Inc.