TC6501 MICROCHIP [Microchip Technology], TC6501 Datasheet

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TC6501

Manufacturer Part Number
TC6501
Description
Ultra Small Temperature Switches with Pin Selectable Hysteresis
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet

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Features
• 5-Pin SOT-23A
• Factory-programmed Thresholds from
• Pin Selectable +2°C or +10°C Hysteresis
• ±0.5°C (Typ) Threshold Accuracy Over Full
• No External Components Required
• 17 µA Supply Current (Typ)
Applications
• Thermal Management in PCs and Servers
• Over-temperature Fail-safe Circuits
• Simple Fan Controller
• Temperature Alarms
• Projectors/Printers
• Notebook Computers
• Network Boxes
Package Types
M
Note: 5-Pin SOT-23A is equivalent to EIAJ SC-74A
-45°C to +125°C in 10°C Increments
Temperature Range
2004 Microchip Technology Inc.
HYST
HYST
GND
GND
GND
GND
1
2
3
1
2
3
TC6503
TC6504
TC6501
TC6502
Ultra Small Temperature Switches
with Pin Selectable Hysteresis
5
4
5
4
V
V
T
T
T
T
CC
UNDER
UNDER
CC
OVER
OVER
TC6501
TC6502
TC6504
TC6503
TC6501/2/3/4
General Description
The TC6501/2/3/4 are SOT-23 temperature switches
that require no external components and are available
with factory-programmed temperature thresholds. A
choice of factory-trimmed temperature trip points are
also available. Pin-selectable hysteresis of +2°C or
+10°C allows flexibility to the design of the application.
These parts typically consume only 17 µA of current
and operate over the entire -55°C to +135°C
temperature range, while offering accuracies of ±0.5°C
(typ).
The TC6501 and TC6503 have an open-drain, active-
low output, which targets microcontroller reset control.
The TC6502 and TC6504 have a CMOS, active-high
output designed to drive the logic level MOSFET that
turns on a fan or heater element.
The TC6501/TC6502 are designed for hot temperature
monitoring (+35°C to +125°C). These devices assert a
logic signal when the temperature goes above the
threshold. The TC6503/TC6504 are optimized for cold
temperature monitoring (-45°C to +15°C) and assert a
logic signal when the temperature goes below the
threshold.
The TC6501/2/3/4 are offered with five standard tem-
perature thresholds. Available in 5-Pin SOT-23A pack-
ages, these parts are ideal for applications requiring
high integration, small size, low power and low installed
cost.
Functional Block Diagram
100 pF
GND GNDHYST
+2.7V to +5.5V
TC6502
V
CC
T
OVER
Microcontroller
INT
PICmicro
DS21451D-page 1
GND
V
CC
®

Related parts for TC6501

TC6501 Summary of contents

Page 1

... The TC6503/TC6504 are optimized for cold temperature monitoring (-45°C to +15°C) and assert a logic signal when the temperature goes below the threshold. The TC6501/2/3/4 are offered with five standard tem- TC6501 perature thresholds. Available in 5-Pin SOT-23A pack- TC6502 ages, these parts are ideal for applications requiring high integration, small size, low power and low installed cost ...

Page 2

... Temperature Threshold Hysteresis Output Voltage High Output Voltage Low Open-Drain Output Leakage Current Note 1: The TC6501/2/3/4 are available with internal, factory-programmed temperature trip thresholds from -45°C to +125°C, in +10°C increments. DS21451D-page 2 * Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. ...

Page 3

... Temperature (˚C) FIGURE 2-2: Output Sink Resistance vs. Temperature. +15˚C/div Mounted On 0. oz. Copper 5sec/div FIGURE 2-3: Thermal Step Response in Perfluorinated Fluid (SOT-23). 2004 Microchip Technology Inc. = 5.0V 100 k (TC6501/TC6503 only), 100 pF decoupling CC PULL-UP = +25°C. AMB -60 -40 - ...

Page 4

... V to GND 180 2.7V 160 4.0V 140 120 100 5. 180 100 Temperature (˚C) FIGURE 2-7: Output Source Resistance vs. Temperature (TC6502). DS21451D-page 4 = 5.0V 100 k (TC6501/TC6503 only), 100 pF decoupling CC PULL-UP = +25°C. AMB 120 140 2004 Microchip Technology Inc. ...

Page 5

... Supply Input ( 100 pF or greater decoupling capacitor from V GND is recommended. 3.4 Open-Drain, Active-Low Output (TC6501 OVER The voltage at the T pin is equal to a logic-low OVER level if the sensor detects a temperature that is greater than the factory-programmed threshold temperature. Because this is an open-drain output, an external pull- ...

Page 6

... For example, the typical thermal resistance of a 5-Pin SOT- 23A package is 140°C/W. If, for instance, the TC6501 had to sink 1 mA, and the output voltage is ensured to be less than 0.3V, an additional 0 power is dissipated within the temperature sensor. This corresponds to a 0.042° ...

Page 7

... APPLICATIONS The TC6501 and TC6503 have open-drain outputs and are, therefore, intended to interface as microcontroller reset inputs. Moreover, the combination of these two devices can be used to implement a temperature window alarm by wire-ORing the outputs and using an external pull-up resistor (see Figure 5-1). +5V R 100 pF PULL-UP ...

Page 8

... TC6501 Hysteresis Selection Positive Temperature + Coefficient Reference – Negative Negative Temperature Temperature Coefficient Coefficient Reference Reference FIGURE 5-4: TC6501 Functional Block Diagram. TC6502 Hysteresis Selection Positive Temperature + Coefficient Reference – Negative Temperature Coefficient Reference FIGURE 5-5: TC6502 Functional Block Diagram. TC6503 Positive Temperature – ...

Page 9

... PACKAGING INFORMATION 6.1 Package Marking Diagram Part Number TC6501P045VCT TC6501P065VCT TC6501P075VCT TC6501P095VCT TC6501P105VCT TC6501P115VCT TC6501P120VCT TC6501P125VCT TC6502P045VCT TC6502P065VCT TC6502P075VCT TC6502P095VCT TC6502P115VCT TC6502P125VCT TC6503N015VCT TC6503P005VCT TC6504N015VCT TC6504P005VCT Note: Please contact Microchip Technology for the availability of a particular temperature threshold not included in Table 4-1. Legend: 1-2 ...

Page 10

... TC6501/2/3/4 5-Lead Plastic Small Outline Transistor (CT) (SOT-23 Dimension Limits Number of Pins Pitch Outside lead pitch (basic) Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Foot Length Foot Angle Lead Thickness Lead Width Mold Draft Angle Top ...

Page 11

... Product Tape and Reel Specification Device Marking Pin 1 Standard Reel Component Orientation 2004 Microchip Technology Inc. TC6501/2/3/4 User Direction of Feed Pin 1 P, Pitch Reverse Reel Component Orientation W, Width of Carrier Tape DS21451D-page 11 ...

Page 12

... TC6501/2/3/4 NOTES: DS21451D-page 12 2004 Microchip Technology Inc. ...

Page 13

... XXXX XXXXX Device Package Standard Temperature Threshold Device: TC6501: Ultra Small Temp Switch with Pin-Selectable Hysteresis TC6502: Ultra Small Temp Switch with Pin-Selectable Hysteresis TC6503: Ultra Small Temp Switch with Pin-Selectable Hysteresis TC6504: Ultra Small Temp Switch with Pin-Selectable Hysteresis Standard N015 = -15° ...

Page 14

... TC6501/2/3/4 NOTES: DS21451D-page 14 2004 Microchip Technology Inc. ...

Page 15

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 ...

Page 16

DSTEMP DS21451D-page 16 2004 Microchip Technology Inc. ...

Page 17

M W ORLDWIDE 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 Atlanta 3780 Mansell Road, Suite 130 Alpharetta, GA 30022 Tel: 770-640-0034 Fax: 770-640-0307 Boston 2 Lan Drive, ...

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