TC6501PO45VCT [MICROCHIP]
Analog Circuit, 1 Func, PDSO5, SOT-23A, 5 PIN;
| 型号： | TC6501PO45VCT |
| 厂家： | 
MICROCHIP |
| 描述： | Analog Circuit, 1 Func, PDSO5, SOT-23A, 5 PIN 光电二极管 |
| 文件： | 总7页 (文件大小：45K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TC6501
TC6502
Ultra Small Temperature Switch with Pin-Selectable Hysteresis
GENERAL DESCRIPTION
FEATURES
The TC6501 and TC6502 are SOT-23A temperature
switches that require no external components and design is
facillitated with factory programmed temperature thresh-
olds. Achoiceoffactory-trimmedtemperaturetrippointsare
available. Pin selectable hysteresis of +2˚C or +10˚C allows
flexibility to the design. These parts typically consume only
17µAofcurrentandoperateovertheentire–55˚Cto+125˚C
temperature range with ±0.5˚C (typ) or ±4˚C (max) accu-
racy.
The TC6501 offers an open drain, active low output
meant for microprocessor reset control. The TC6502 has a
CMOS, active high output designed to drive a logic level
MOSFET to turn on a fan or heater element.
ꢀ 5-Pin SOT-23A
ꢀ Factory-Programmed Thresholds
ꢀ Pin-Selectable +2°C or +10°C Hysteresis
ꢀ ± 0.5°C (Typ) Threshold Accuracy Over Full
Temperature Range
ꢀ No External Components Required
ꢀ 17µA Supply Current
TYPICAL APPLICATIONS
ꢀ Thermal Management in PCs
ꢀ Over Temperature Fail Safe Circuits
ꢀ Simple Fan Controller
ꢀ Temperature Alarms
ꢀ Projectors / Printers
ꢀ Notebook Computers
ꢀ Set Top Boxes
The TC6501 and TC6502 are offered in three standard
temperature thresholds. Packaged in a 5-Pin SOT-23A,
these parts are ideal for applications requiring high integra-
tion, small size, low power and low installed cost.
ORDERING INFORMATION
Part No
Package
Standard Temp. Threshhold
Output Stage
TC6501PO45VCT
TC6501PO65VCT
TC6501PO95VCT
5-Pin SOT-23A
5-Pin SOT-23A
5-Pin SOT-23A
45°C
65°C
95°C
Open Drain
Open Drain
Open Drain
TC6502PO45VCT
TC6502PO65VCT
TC6502PO95VCT
5-Pin SOT-23A
5-Pin SOT-23A
5-Pin SOT-23A
45°C
65°C
95°C
Push/Pull
Push/Pull
Push/Pull
Note: These devices are offered in 3 standard temperature settings. Other non-standard versions are
available (including 55°C, 75°C, 85°C, 105°C and 115°C), please contact factory for more information.
PIN CONFIGURATIONS
5-Pin SOT-23A*
5
TOVER
(TOVER)**
1
2
GND
GND
TC6501
TC6502
4
VCC
3
HYST
* Note: 5-Pin SOT-23A is equivalent to EIAJ SC-74A
** TC6502
TC6501/02-1 1/17/00
TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices.
Ultra Small Temperature Switch
with Pin-Selectable Hysteresis
TC6501
TC6502
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage (VCC) ................................... –0.3V to +7V
TOVER (TC6501)......................................... –0.3V to +7V
TOVER (TC6502)........................... –0.3V to (VCC + 0.3V)
All Other Pins ................................. –0.3V to (VCC + 0.3V)
Input Current (All Pins) .............................................20mA
Output Current (All Pins) ..........................................20mA
Operating Temperature Range ............. – 55°C to +125°C
Storage Temperature Range ................ – 65°C to +165°C
Lead Temperature (Soldering, 10 sec) ................. +300°C
Power Dissipation (TA = +70°C)
(Derate 7.1mW/°C Above +70°C) ....................571mW
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under Absolute Maximum Ratings may cause perma-
nent 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 operational sections of the specifications is not implied.
Exposure to Absolute Maximum Rating Conditions for extended periods
may affect device reliability.
ELECTRICALCHARACTERISTICS: VCC =+2.7Vto+5.5V, RPULL-UP =100KΩ (TC6501), 100pf = capconnected
on VCC, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
Symbol
VCC
Parameter
Supply Voltage Range
Test Conditions
Min
2.7
—
Typ
—
Max
5.5
Unit
V
ICC
Supply Current
17
40
µA
°C
∆TTH
Temperature Threshold Accuracy
(Note 1)
+35°C to +65°C
+75°C to +115°C
–4
–6
±0.5
±0.5
4
6
THYST
Temperature Threshold Hysteresis
HYST = GND
HYST = VCC
—
—
2
10
—
—
°C
VIH
VIL
HYST Input Threshold
HYST Input Threshold
Output Voltage High
0.8 x VCC
—
—
—
—
—
0.2 x VCC
—
V
V
V
VOH
ISOURCE = 500µA, VCC > 2.7V
(TC6502)
0.8 x VCC
ISOURCE = 800µA, VCC > 4.5V
(TC6502)
VCC – 1.5
—
—
V
VOL
Output Voltage Low
ISINK = 1.2mA, VCC > 2.7V
ISINK = 3.2mA, VCC > 4.5V
—
—
—
—
0.3
0.4
V
V
Open-Drain Output Leakage
Current
VCC = 2.7V,
VTOVER = 5.5V (TC6501)
—
10
—
nA
NOTES: 1. The TC6501 and 6502 are available with internal, factory-programmed temperature trip thresholds from 35°C to +115°C in +10°C
increments.
2
TC6501/02-1 1/17/00
Ultra Small Temperature Switch
with Pin-Selectable Hysteresis
TC6501
TC6502
PIN DESCRIPTION
TC6501 TC6502
Name
Description
1,2
1,2
GND
Ground. Ground both pins together close to the chip. Pin 2 provides the
lowest thermal resistance to the die.
3
3
HYST
Hysteresis Input. Connect HYST to GND for +2°C hysteresis, or connect
to VCC for +10°C hysteresis.
4
5
4
VCC
Supply Input (+2.7V to +5.5V). Recommend 100pF or greater from VCC to GND.
—
TOVER
Open-Drain, Active-Low Output. TOVER goes low when the die tempera-
ture exceeds the factory-programmed temperature threshold. Connect to a
100 KΩ pull-up resistor. May be pulled up to a voltage higher than VCC
.
—
5
TOVER
Push/Pull Active-High Output. TOVER goes high when the die tempera-
ture exceeds the factory-programmed temperature threshold.
TYPICAL OPERATING CIRCUIT
Hysteresis Input
+2.7V to +5.5V
100pF
Topreventtheoutputfrom“chattering”atornearthetrip
point temperature, a selectable HYST input pin is provided.
Hysteresiscanbeexternallyselectedat2 °C(HYST=GND)
or 10°C (HYST = VDD) by means of the CMOS compatible
HYST input pin.Do not let the HYST pin float as this could
cause increase supply current. The hysteresis does not
depend on the part’s programmed trip threshold.
V
CC
V
CC
µP
TC6502
TOVER
INT
Table 1. Factory-Programmed Threshold Range
GND GND HYST
GND
Part
Number
Threshold (TTH) Range
TC6501
TC6502
+35°C < TTH < +115°C
+35°C < TTH < +115°C
Thermal Considerations
DETAILED DESCRIPTION
With a very low 17µA supply current, the TC6501 and
TC6502 dissipates very little power. Thus, the die tempera-
ture is basically the same as the package temperature. To
minimize the error in temperature readings, the load current
should be limited to a few milliamps. As an example, the
typical thermal resistance of an 5-Pin SOT-23A package is
140C/W. IfforinstancetheTC6501hadtosink1mA,andthe
output voltage is guaranteed to be less than 0.3V, then an
additional 0.3mW of power is dissipated within the IC. This
corresponds to a 0.042 C rise in die temperature in the 5-Pin
SOT23.
The TC6501 and TC6502 integrate a temperature
sensor with a factory programmed threshold switch. A logic
signal is asserted when the die temperature crosses the
factory programmed threshold. An external hysteresis input
pin allows the user to select either 2°C or 10°C hysteresis to
give further flexibility to the design of the application. The
TC6501 and TC6502 are intended for a temperature range
from 35°C to 115°C in a 10°C increment. The TC6501 has
anopendrainoutputandtheTC6502hasapush/pulloutput
stage.
The TC6501 is intended for applications with a micro-
processor reset input. The TC6502 is intended for applica-
tions of turning on a fan or heater element.
Good temperature monitoring depends on the thermal
resistance between the device being monitored and the
TC6501 and TC6502 die. Heat flows primarily through the
3
TC6501/02-1 1/17/00
Ultra Small Temperature Switch
with Pin-Selectable Hysteresis
TC6501
TC6502
leads onto the die. Pin 2 of the 5-Pin SOT-23A package
provides the lowest thermal resistance to the die. Thus,
place the TC6501 and TC6502 closest to the device being
monitoredanduseashortwidecoppertracefrompin2tothe
device. Insomecases, the5-PinSOT-23Apackagecanbe
placed directly under the socketed µP for the improved
thermal contact.
+5V
V
CC
100pF
HEAT
TEMPERATURE
FAULT
TC6502
GND
TOVER
GND HYST
APPLICATIONS
µP
The TC6502 can be used to control a DC fan. The fan
turns on when the sensed temperature rises above the
factory set threshold and remains on until the temperature
falls below threshold minus the hysteresis selected. An
additional fail safe measure could be had by designing in a
second TC6502 with a higher temperature threshold to alert
the user of an impending thermal shutdown should the
temperature continue to rise. (See Figure 2)
FAN
CONTROL
V
TOVER
CC
HYST
HEAT
100pF
TC6502
GND GND
Figure 2. Fan Control Circuit with Over Temperature Alert
V
TOVER
TOVER
+
TC6501
With 100 KΩ Pull-Up
Positive
Tempco
–
Reference
Negative
HYST
Network
Tempco
HYST
Reference
TEMP
TC6501
COLD +25°C
TTH
HOT
V
TC6502
+
–
TOVER
TOVER
Positive
Tempco
Reference
Negative
Tempco
Reference
HYST
Network
HYST
TEMP
TC6502
COLD +25°C
TTH
HOT
Figure 3. Block and Functional Diagrams
4
TC6501/02-1 1/17/00
Ultra Small Temperature Switch
with Pin-Selectable Hysteresis
TC6501
TC6502
TYPICAL CHARACTERISTICS CURVES
TC6502
Supply Current vs.
Temperature
Output Source Resistance
vs. Temperature
Trip Threshold Accuracy
60
50
40
30
20
10
0
40
35
30
25
20
15
10
5
180
160
V
= 2.7V
CC
V
V
= 4.0V
140
120
CC
CC
= 5.0V
100
80
60
180
40
20
0
60 80 100120140
0 20 40
–60 –40 –20
–5 –4 –3 –2 –1
0
1
2
3
4
5
120 140
0
20 40
60 80 100
ACCURACY (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
Hysteresis
vs. Trip Temperature
Output Sink Resistance
vs. Temperature
80
70
60
50
40
30
20
10
0
12
10
8
V
= 2.7V
CC
V
= 4.0V
CC
Hys = V
CC
V
= 5.0V
CC
6
4
Hys = GND
2
0
60 70 80 90 100
–25
15
0 10 20 30 40 50
–45
–5
35 55 75
95 115
TEMPERATURE (°C)
TRIP TEMPERATURE (°C)
SOT-23A Thermal Step Response
in Still Air
SOT-23A Thermal Step Response
in Perfluorinated Fluid
+100°C
+100°C
+15°C/div
+12.5°C/div
2
2
Mounted On 0.75 in
of 2 oz. Copper
Mounted On 0.75 in
of 2 oz. Copper
+25°C
+25°C
5sec/div
20sec/div
5
TC6501/02-1 1/17/00
Ultra Small Temperature Switch
with Pin-Selectable Hysteresis
TC6501
TC6502
MARKING
Part Number
Code
5-Pin SOT-23A
TC6502P045VCT
TC6502P065VCT
TC6502P095VCT
JA
JC
JF
H
A
ex: 6501VCT = ꢂꢂꢂꢂ
ꢃ represents year and two-month period code
ꢄ represents lot ID number
Part Numbers and Part Marking
ꢀꢀ&
ꢁ = two letter part number codes
Part Number
Code
TC6501P045VCT
TC6501P065VCT
TC6501P095VCT
HA
HC
HF
TAPING FORM
Component Taping Orientation for 5-Pin SOT-23A (EIAJ SC-74A) Devices
PIN 1
User Direction of Feed
User Direction of Feed
M a r k i n g
D e v i c e
Device
Marking
W
PIN 1
P
Standard Reel Component Orientation
TR Suffix Device
Reverse Reel Component Orientation
RT Suffix Device
(Mark Right Side Up)
(Mark Upside Down)
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
3000
Reel Size
5-Pin SOT-23A
8 mm
4 mm
7 in
6
TC6501/02-1 1/17/00
Ultra Small Temperature Switch
with Pin-Selectable Hysteresis
TC6501
TC6502
PACKAGE DIMENSIONS
5-Pin SOT-23A (EIAJ SC-74A)
.075 (1.90)
REF.
.071 (1.80)
.059 (1.50)
.122 (3.10)
.098 (2.50)
.020 (0.50)
.012 (0.30)
.037 (0.95)
REF.
PIN 1
.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)
Sales Offices
TelCom Semiconductor, GmbH
Lochhamer Strasse 13
D-82152 Martinsried
TelCom Semiconductor H.K. Ltd.
10 Sam Chuk Street, Ground Floor
San Po Kong, Kowloon
TelCom Semiconductor, Inc.
1300 Terra Bella Avenue
P.O. Box 7267
Germany
TEL: (011) 49 89 895 6500
FAX: (011) 49 89 895 6502 2
Hong Kong
TEL: (011) 852-2350-7380
FAX: (011) 852-2354-9957
Mountain View, CA 94039-7267
TEL: 650-968-9241
FAX: 650-967-1590
E-Mail: liter@telcom-semi.com
Printed in the U.S.A.
7
TC6501/02-1 1/17/00
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