TC52N2818ECT [MICROCHIP]
2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5, EIAJ, SC-74A, SOT-23A, 5 PIN;
| 型号： | TC52N2818ECT |
| 厂家： | 
MICROCHIP |
| 描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5, EIAJ, SC-74A, SOT-23A, 5 PIN 光电二极管 |
| 文件： | 总10页 (文件大小：517K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TC52
M
Dual Channel Voltage Detector
Features
General Description
• Two Independent Voltage Detectors in One
Package
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
2µA 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.
• Highly Accurate: ±2%
• Low Power Consumption: 2.0µA, 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
Functional Block Diagram
• Memory Battery Backup Circuitry
• Power-On Reset Circuits
• Power Failure Detection
• Delay Circuitry
V
IN1
V
OUT1
+
–
Device Selection Table
V
IN2
Part Number
Package
Temp. Range
TC52-xxxxxxxxxx 5-Pin SOT-23A -40°C to +85°C
V
OUT2
+
–
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
GND
Package Type
V
REF
5-Pin SOT-23A
V
V
IN2
4
OUT2
5
TC52
2
3
1
V
V
GND
OUT1
IN1
2002 Microchip Technology Inc.
DS21430B-page 1
TC52
*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.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Input Voltage ........................................................+12V
Output Current ....................................................50mA
Output Voltage.......................VIN + 0.3V to VSS – 0.3V
Power Dissipation
5-Pin SOT-23A ...........................................100mW
Operating Temperature Range.............-40°C to +85°C
Storage Temperature Range..............-40°C to +125°C
TC52 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: T = 25°C, unless otherwise specified. Note 1.
A
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
V
I
Operating Voltage
Supply Current
1.5
—
10.0
V
V
(T) = 1.5 to 5.0V
= 1.5V
= 2.0V
= 3.0V
= 4.0V
= 5.0V
IN
DF
—
—
—
—
—
1.35
1.50
1.95
2.40
3.00
3.90
4.50
5.10
5.70
6.30
µA
V
V
V
V
V
SS
IN1
IN1
IN1
IN1
IN1
I
Input Current V
—
—
—
—
—
0.45
0.50
0.65
0.80
1.00
1.30
1.50
1.70
1.90
2.10
µA
V
V
V
V
V
= 1.5V
= 2.0V
= 3.0V
= 4.0V
= 5.0V
IN2
IN2
IN1
IN1
IN1
IN1
IN1
V
V
V
V
-
-
Channel 1 Detect Voltage
Channel 2 Detect Voltage
Hysteresis Range 1
Hysteresis Range 2
Output Current
V
V
x 0.98
V
V
±0.5%
±0.5%
- x 0.05
- x 0.05
V
V
x 1.02
V
V
Note 2
Note 2
DET1
DET2
HYS1
HYS2
OUT
T1
T2
T1
T2
T1
T2
x 0.98
x 1.02
V
V
- x 0.02
- x 0.02
V
V
V
V
- x 0.08
- x 0.08
V
DET1
DET2
DET1
DET2
DET1
DET2
V
I
0.3
3.0
5.0
6.0
7.0
2.2
7.7
10.1
11.5
13.0
—
—
—
—
—
mA
V
= 0.5V, V
= 1.0V
= 2.0V
= 3.0V
= 4.0V
= 5.0V
OL
IN1
IN1
IN1
IN1
IN1
V
V
V
V
∆V
(∆T
-/
Temperature Characteristics
Detection Time
—
±100
—
ppm/°C -40°C ≤ T
≤ 85°C
DET
OPR
V
-)
OPR DET
t
—
—
0.2
msec Time from V = V
- to
DLY
IN
DET
V
= V
OL
OUT
Note 1: Additional resistance between the VIN1 pin and the supply voltage may alter the electrical characteristics.
2: VT1, VT2 are the factory-programmed voltage detection thresholds.
DS21430B-page 2
2002 Microchip Technology Inc.
TC52
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin No.
(5-Pin SOT-23A)
Symbol
Description
1
2
3
4
5
V
Detector #1 output.
OUT1
V
Supply voltage input, detect voltage 1.
Ground terminal.
IN
GND
V
Detect voltage 2.
IN2
V
Detector #2 output.
OUT2
The output, VOUT, stays 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, at which time the output becomes valid.
3.0
DETAILED DESCRIPTION
In normal steady-state operation and for either
channel, when VIN > VDET -, 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
VDET -, the output pulls down (Logic 0) to VSS
.
VOUT is maintained in its active low state while VINMIN
<
Generally, VOUT can pull down to within 0.5V of VSS at
rated output current and input voltages. (Also see
Section 1.0, Electrical Characteristics).
VIN < VDET+. (VDET+ = VDET - + VHYST). If and when
the input rises above VDET+, the output will assume its
inactive state (open-drain for TC52N).
FIGURE 3-1:
TIMING DIAGRAM
+
DET
V
V
INx
Release Voltage
or RESET Voltage
V
HYST
Detect Voltage V
DET
Minimum Operating
Voltage
Ground Level
V
OUTx
Output Voltage
Ground Level
2002 Microchip Technology Inc.
DS21430B-page 3
TC52
4.1
Battery and Main Supply Monitor
4.0
APPLICATIONS INFORMATION
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 VOUT2 output is driven and held low. When
the power supply voltage is above 3.0V nominal, VOUT2
is driven to an open circuit and the combination of R1
and C1 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.
Pin 2 (VIN1) acts as both the input to Voltage Detector
#1, as well as the power supply input for the chip. As
such, always assign VIN1 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
(0.01µF to 0.1µF) from VIN1 to ground to minimize on-
chip power supply noise.
FIGURE 4-1:
SUPPLY MONITOR AND PROCESSOR SUPERVISOR
+3.3V
System
3.3V
R
1
47K
TC105
Step Down
DC/DC
Converter
V
V
RESET
OUT2
IN2
+
C
1µF
1
+
–
6V
Battery
GND
TC52N3330ECT
+3.3V
–
Processor
R
2
47K
V
V
INT
OUT1
IN1
DS21430B-page 4
2002 Microchip Technology Inc.
TC52
5.0
5.1
PACKAGING INFORMATION
Package Marking Information
3
1
represents N-channel indication and integer part
of output voltage
Symbol
Output
C
N
CMOS
Nch
2
3
represents registration serial number
Symbol
Detect Voltage 1 Detect Voltage 2
4.5 2.7
0P
Note: Symbols for other custom voltages set prior to shipment.
4
represents assembly lot code
5.2
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
2002 Microchip Technology Inc.
DS21430B-page 5
TC52
5.3
Package Dimensions
SOT-23A-5
.075 (1.90)
REF.
.071 (1.80)
.059 (1.50)
.122 (3.10)
.098 (2.50)
.020 (0.50)
.012 (0.30)
PIN 1
.037 (0.95)
REF.
.122 (3.10)
.106 (2.70)
.057 (1.45)
.035 (0.90)
.010 (0.25)
.004 (0.09)
10° MAX.
.006 (0.15)
.000 (0.00)
.024 (0.60)
.004 (0.10)
Dimensions: inches (mm)
DS21430B-page 6
2002 Microchip Technology Inc.
TC52
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
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: -40°C to +85°C
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.
Sales and Support
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.
2002 Microchip Technology Inc.
DS21430B-page7
TC52
NOTES:
DS21430B-page8
2002 Microchip Technology Inc.
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,
KEELOQ, 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, KEELOQ® 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.
2002 Microchip Technology Inc.
DS21430B-page 9
M
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05/01/02
'ꢀꢁꢂꢃ! ꢄꢅ'
DS21430B-page 10
2002 Microchip Technology Inc.
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