2002 Microchip Technology Inc.
DS21430B-page 1
M
TC52
Features
Two Independent Voltage Detectors in One
Package
Highly Accurate: 2%
Low Power Consumption: 2.0
A, Typ.
Detect Voltage Range: 1.5V to 5.0V
Operating Voltage: 1.5V to 10.0V
Output Configuration: N-Channel Open-Drain
Space-Saving 5-Pin SOT-23A Package
Typical Applications
Battery Life Monitors and Recharge Voltage
Monitors
Memory Battery Backup Circuitry
Power-On Reset Circuits
Power Failure Detection
Delay Circuitry
Device Selection Table
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
General Description
The TC52 consists of two independent low power
voltage detectors in a space-saving 5-pin SOT-23A
package. Typical supply current consumption is only
2
A at an input voltage of 2V. The voltage detection
threshold settings are factory-programmed and
guaranteed to 2% accuracy. Threshold settings over a
range of 1.5V to 5.0V are available. The TC52 is
available with open drain (NMOS) configurations.
Small size, high precision, low supply current, and low
installed cost makes the TC52 the ideal voltage
detector for a wide variety of voltage monitoring
applications.
Functional Block Diagram
Part Number
Package
Temp. Range
TC52-xxxxxxxxxx
5-Pin SOT-23A -40C to +85C
5
V
OUT2
V
OUT1
GND
5-Pin SOT-23A
TC52
1
3
4
V
IN2
2
V
IN1
V
REF
+
+
V
IN1
V
OUT1
V
OUT2
GND
V
IN2
Dual Channel Voltage Detector
TC52
DS21430B-page 2
2002 Microchip Technology Inc.
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 ...........................................100mW
Operating Temperature Range............. -40C to +85C
Storage Temperature Range ..............-40C to +125C
*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.
TC52 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: T
A
= 25C, unless otherwise specified. Note 1.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
V
IN
Operating Voltage
1.5
--
10.0
V
V
DF
(T) = 1.5 to 5.0V
I
SS
Supply Current
--
--
--
--
--
1.35
1.50
1.95
2.40
3.00
3.90
4.50
5.10
5.70
6.30
A
V
IN1
= 1.5V
V
IN1
= 2.0V
V
IN1
= 3.0V
V
IN1
= 4.0V
V
IN1
= 5.0V
I
IN2
Input Current V
IN2
--
--
--
--
--
0.45
0.50
0.65
0.80
1.00
1.30
1.50
1.70
1.90
2.10
A
V
IN1
= 1.5V
V
IN1
= 2.0V
V
IN1
= 3.0V
V
IN1
= 4.0V
V
IN1
= 5.0V
V
DET1
-
Channel 1 Detect Voltage
V
T1
x 0.98
V
T1
0.5%
V
T1
x 1.02
V
Note 2
V
DET2
-
Channel 2 Detect Voltage
V
T2
x 0.98
V
T2
0.5%
V
T2
x 1.02
V
Note 2
V
HYS1
Hysteresis Range 1
V
DET1
- x 0.02
V
DET1
- x 0.05
V
DET1
- x 0.08
V
V
HYS2
Hysteresis Range 2
V
DET2
- x 0.02
V
DET2
- x 0.05
V
DET2
- x 0.08
V
I
OUT
Output Current
0.3
3.0
5.0
6.0
7.0
2.2
7.7
10.1
11.5
13.0
--
--
--
--
--
mA
V
OL
= 0.5V, V
IN1
= 1.0V
V
IN1
= 2.0V
V
IN1
= 3.0V
V
IN1
= 4.0V
V
IN1
= 5.0V
V
DET
-/
(
T
OPR
V
DET
-)
Temperature Characteristics
--
100
--
ppm/C -40C
T
OPR
85C
t
DLY
Detection Time
--
--
0.2
msec
Time from V
IN
= V
DET
- to
V
OUT
= V
OL
Note
1:
Additional resistance between the V
IN1
pin and the supply voltage may alter the electrical characteristics.
2:
V
T1
, V
T2
are the factory-programmed voltage detection thresholds.
2002 Microchip Technology Inc.
DS21430B-page 3
TC52
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
3.0
DETAILED DESCRIPTION
In normal steady-state operation and for either
channel, when V
IN
> V
DET
-, the output is high, see
Figure 3-1. (In the case of the TC52N, this is an open-
drain condition.) If and when the input falls below
V
DET
-, the output pulls down (Logic 0) to V
SS
.
Generally, V
OUT
can pull down to within 0.5V of V
SS
at
rated output current and input voltages. (Also see
Section 1.0, Electrical Characteristics).
The output, V
OUT
, stays valid until the input voltage falls
below the minimum operating voltage, V
IN
MIN
, of 0.7V.
Below this minimum operating voltage, the output is
undefined. During power-up or anytime V
IN
has fallen
below V
IN
MIN
, V
OUT
will remain undefined until V
IN
rises
above V
IN
MIN
, at which time the output becomes valid.
V
OUT
is maintained in its active low state while V
IN
MIN
<
V
IN
< V
DET
+. (V
DET
+
= V
DET
- + V
HYST
). If and when
the input rises above V
DET
+, the output will assume its
inactive state (open-drain for TC52N).
FIGURE 3-1:
TIMING DIAGRAM
Pin No.
(5-Pin SOT-23A)
Symbol
Description
1
V
OUT1
Detector #1 output.
2
V
IN
Supply voltage input, detect voltage 1.
3
GND
Ground terminal.
4
V
IN2
Detect voltage 2.
5
V
OUT2
Detector #2 output.
V
INx
Detect Voltage V
DET
Minimum Operating
Voltage
V
HYST
V
DET
+
Output Voltage
Release Voltage
or RESET Voltage
Ground Level
Ground Level
V
OUTx
TC52
DS21430B-page 4
2002 Microchip Technology Inc.
4.0
APPLICATIONS INFORMATION
Pin 2 (V
IN1
) acts as both the input to Voltage Detector
#1, as well as the power supply input for the chip. As
such, always assign V
IN1
to monitor voltages between
1.5V and 10V. Failure to do this will result in unreliable
detector operation due to an out-of-tolerance supply
voltage. In high noise environments, it may be
necessary to install a small input bypass capacitor
(0.01
F to 0.1
F) from V
IN1
to ground to minimize on-
chip power supply noise.
4.1
Battery and Main Supply Monitor
The circuit shown in Figure 4-1 provides both a
processor supply monitor/reset function, as well as a
low battery detect function. As shown, the
TC52N3330ECT (N-Channel outputs) uses Detector 2
to monitor the system power supply rail. When the
power supply is 10% below its nominal output voltage
rating, the V
OUT2
output is driven and held low. When
the power supply voltage is above 3.0V nominal, V
OUT2
is driven to an open circuit and the combination of R
1
and C
1
provides a reset time out delay. Detector 1
monitors the voltage on the main supply battery. A low
battery condition is indicated when the battery voltage
falls to 3.3V, at which time the main processor is
interrupted to initiate a warning or system shutdown.
FIGURE 4-1:
SUPPLY MONITOR AND PROCESSOR SUPERVISOR
TC105
Step Down
DC/DC
Converter
6V
Battery
V
IN2
V
OUT2
GND
TC52N3330ECT
V
IN1
V
OUT1
RESET
Processor
INT
System
3.3V
+3.3V
R
1
47K
+ C
1
1
F
+3.3V
+
R
2
47K
2002 Microchip Technology Inc.
DS21430B-page 5
TC52
5.0
PACKAGING INFORMATION
5.1
Package Marking Information
Note: Symbols for other custom voltages set prior to shipment.
5.2
Taping Form
Symbol
Output
C
CMOS
N
Nch
Symbol
Detect Voltage 1 Detect Voltage 2
0P
4.5
2.7
3
1
represents N-channel indication and integer part
of output voltage
2
represents registration serial number
3
4
represents assembly lot code
Component Taping Orientation for 5-Pin SOT-23A (EIAJ SC-74A) Devices
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
5-Pin SOT-23A
8 mm
4 mm
3000
7 in
Carrier Tape, Number of Components Per Reel and Reel Size
User Direction of Feed
Device
Marking
PIN 1
Standard Reel Component Orientation
TR Suffix Device
(Mark Right Side Up)
W
P
TC52
DS21430B-page 6
2002 Microchip Technology Inc.
5.3
Package Dimensions
.071 (1.80)
.059 (1.50)
.122 (3.10)
.098 (2.50)
.075 (1.90)
REF.
.020 (0.50)
.012 (0.30)
PIN 1
.037 (0.95)
REF.
.122 (3.10)
.106 (2.70)
.057 (1.45)
.035 (0.90)
.006 (0.15)
.000 (0.00)
.024 (0.60)
.004 (0.10)
10
MAX.
.010 (0.25)
.004 (0.09)
SOT-23A-5
Dimensions: inches (mm)
2002 Microchip Technology Inc.
DS21430B-page 7
TC52
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
Sales and Support
PART CODE
TC52
N
45
27
E
CT
XX
Output Configuration:
N = Open Drain
Detected Voltage 1*:
Ex: 45 = 4.5V
Detected Voltage 2*:
Ex: 27 = 2.7V
Temperature:
E: -40C to +85C
Package Type and Pin Count:
CT: 5-Pin SOT-23A
Taping Direction:
TR: Standard Taping
*Other voltages are available. Please contact Microchip Technology Inc. for details.
Data Sheets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom-
mended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1.
Your local Microchip sales office
2.
The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277
3.
The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
New Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
TC52
DS21430B-page 8
2002 Microchip Technology Inc.
NOTES:
2002 Microchip Technology Inc.
DS21430B-page 9
TC52
Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip's products as critical com-
ponents in life support systems is not authorized except with
express written approval by Microchip. No licenses are con-
veyed, implicitly or otherwise, under any intellectual property
rights.
Trademarks
The Microchip name and logo, the Microchip logo, FilterLab,
K
EE
L
OQ
, microID, MPLAB, PIC, PICmicro, PICMASTER,
PICSTART, PRO MATE, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip Tech-
nology Incorporated in the U.S.A. and other countries.
dsPIC, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
MXDEV, MXLAB, PICC, PICDEM, PICDEM.net, rfPIC, Select
Mode and Total Endurance are trademarks of Microchip
Technology Incorporated in the U.S.A.
Serialized Quick Turn Programming (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.
2002, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received QS-9000 quality system
certification for its worldwide headquarters,
design and wafer fabrication facilities in
Chandler and Tempe, Arizona in July 1999
and Mountain View, California in March 2002.
The Company's quality system processes and
procedures are QS-9000 compliant for its
PICmicro
8-bit MCUs, K
EE
L
OQ
code hopping
devices, Serial EEPROMs, microperipherals,
non-volatile memory and analog products. In
addition, Microchip's quality system for the
design and manufacture of development
systems is ISO 9001 certified.
DS21430B-page 10
2002 Microchip Technology Inc.
M
AMERICAS
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200 Fax: 480-792-7277
Technical Support: 480-792-7627
Web Address: http://www.microchip.com
Rocky Mountain
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7966 Fax: 480-792-7456
Atlanta
500 Sugar Mill Road, Suite 200B
Atlanta, GA 30350
Tel: 770-640-0034 Fax: 770-640-0307
Boston
2 Lan Drive, Suite 120
Westford, MA 01886
Tel: 978-692-3848 Fax: 978-692-3821
Chicago
333 Pierce Road, Suite 180
Itasca, IL 60143
Tel: 630-285-0071 Fax: 630-285-0075
Dallas
4570 Westgrove Drive, Suite 160
Addison, TX 75001
Tel: 972-818-7423 Fax: 972-818-2924
Detroit
Tri-Atria Office Building
32255 Northwestern Highway, Suite 190
Farmington Hills, MI 48334
Tel: 248-538-2250 Fax: 248-538-2260
Kokomo
2767 S. Albright Road
Kokomo, Indiana 46902
Tel: 765-864-8360 Fax: 765-864-8387
Los Angeles
18201 Von Karman, Suite 1090
Irvine, CA 92612
Tel: 949-263-1888 Fax: 949-263-1338
New York
150 Motor Parkway, Suite 202
Hauppauge, NY 11788
Tel: 631-273-5305 Fax: 631-273-5335
San Jose
Microchip Technology Inc.
2107 North First Street, Suite 590
San Jose, CA 95131
Tel: 408-436-7950 Fax: 408-436-7955
Toronto
6285 Northam Drive, Suite 108
Mississauga, Ontario L4V 1X5, Canada
Tel: 905-673-0699 Fax: 905-673-6509
ASIA/PACIFIC
Australia
Microchip Technology Australia Pty Ltd
Suite 22, 41 Rawson Street
Epping 2121, NSW
Australia
Tel: 61-2-9868-6733 Fax: 61-2-9868-6755
China - Beijing
Microchip Technology Consulting (Shanghai)
Co., Ltd., Beijing Liaison Office
Unit 915
Bei Hai Wan Tai Bldg.
No. 6 Chaoyangmen Beidajie
Beijing, 100027, No. China
Tel: 86-10-85282100 Fax: 86-10-85282104
China - Chengdu
Microchip Technology Consulting (Shanghai)
Co., Ltd., Chengdu Liaison Office
Rm. 2401, 24th Floor,
Ming Xing Financial Tower
No. 88 TIDU Street
Chengdu 610016, China
Tel: 86-28-86766200 Fax: 86-28-86766599
China - Fuzhou
Microchip Technology Consulting (Shanghai)
Co., Ltd., Fuzhou Liaison Office
Unit 28F, World Trade Plaza
No. 71 Wusi Road
Fuzhou 350001, China
Tel: 86-591-7503506 Fax: 86-591-7503521
China - Shanghai
Microchip Technology Consulting (Shanghai)
Co., Ltd.
Room 701, Bldg. B
Far East International Plaza
No. 317 Xian Xia Road
Shanghai, 200051
Tel: 86-21-6275-5700 Fax: 86-21-6275-5060
China - Shenzhen
Microchip Technology Consulting (Shanghai)
Co., Ltd., Shenzhen Liaison Office
Rm. 1315, 13/F, Shenzhen Kerry Centre,
Renminnan Lu
Shenzhen 518001, China
Tel: 86-755-2350361 Fax: 86-755-2366086
China - Hong Kong SAR
Microchip Technology Hongkong Ltd.
Unit 901-6, Tower 2, Metroplaza
223 Hing Fong Road
Kwai Fong, N.T., Hong Kong
Tel: 852-2401-1200 Fax: 852-2401-3431
India
Microchip Technology Inc.
India Liaison Office
Divyasree Chambers
1 Floor, Wing A (A3/A4)
No. 11, O'Shaugnessey Road
Bangalore, 560 025, India
Tel: 91-80-2290061 Fax: 91-80-2290062
Japan
Microchip Technology Japan K.K.
Benex S-1 6F
3-18-20, Shinyokohama
Kohoku-Ku, Yokohama-shi
Kanagawa, 222-0033, Japan
Tel: 81-45-471- 6166 Fax: 81-45-471-6122
Korea
Microchip Technology Korea
168-1, Youngbo Bldg. 3 Floor
Samsung-Dong, Kangnam-Ku
Seoul, Korea 135-882
Tel: 82-2-554-7200 Fax: 82-2-558-5934
Singapore
Microchip Technology Singapore Pte Ltd.
200 Middle Road
#07-02 Prime Centre
Singapore, 188980
Tel: 65-6334-8870 Fax: 65-6334-8850
Taiwan
Microchip Technology Taiwan
11F-3, No. 207
Tung Hua North Road
Taipei, 105, Taiwan
Tel: 886-2-2717-7175 Fax: 886-2-2545-0139
EUROPE
Denmark
Microchip Technology Nordic ApS
Regus Business Centre
Lautrup hoj 1-3
Ballerup DK-2750 Denmark
Tel: 45 4420 9895 Fax: 45 4420 9910
France
Microchip Technology SARL
Parc d'Activite du Moulin de Massy
43 Rue du Saule Trapu
Batiment A - ler Etage
91300 Massy, France
Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79
Germany
Microchip Technology GmbH
Gustav-Heinemann Ring 125
D-81739 Munich, Germany
Tel: 49-89-627-144 0 Fax: 49-89-627-144-44
Italy
Microchip Technology SRL
Centro Direzionale Colleoni
Palazzo Taurus 1 V. Le Colleoni 1
20041 Agrate Brianza
Milan, Italy
Tel: 39-039-65791-1 Fax: 39-039-6899883
United Kingdom
Microchip Ltd.
505 Eskdale Road
Winnersh Triangle
Wokingham
Berkshire, England RG41 5TU
Tel: 44 118 921 5869 Fax: 44-118 921-5820
05/01/02
' ! '
W
ORLDWIDE
S
ALES
AND
S
ERVICE
This datasheet has been download from:
www.datasheetcatalog.com
Datasheets for electronics components.
PDF 
ZIP