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PDF TC6504 Data sheet ( Hoja de datos )

Número de pieza TC6504
Descripción (TC6501 - TC6504) Ultra Small Temperature Switches with Pin Selectable Hysteresis
Fabricantes Microchip Technology 
Logotipo Microchip Technology Logotipo



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No Preview Available ! TC6504 Hoja de datos, Descripción, Manual

M
TC6501/2/3/4
Ultra Small Temperature Switches
with Pin Selectable Hysteresis
Features
• 5-Pin SOT-23A
• Factory-programmed Thresholds from
-45°C to +125°C in 10°C Increments
• Pin Selectable +2°C or +10°C Hysteresis
• ±0.5°C (Typ) Threshold Accuracy Over Full
Temperature Range
• 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
GND 1
GND 2
TC6501
TC6502
5 TOVER TC6501
TOVER TC6502
HYST 3
4 VCC
GND 1
GND 2
TC6503
TC6504
5 TUNDER TC6503
TUNDER TC6504
HYST 3
4 VCC
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
+2.7V to +5.5V
100 pF
VCC
TC6502
TOVER
GND GNDHYST
VCC
PICmicro®
Microcontroller
INT
GND
Note: 5-Pin SOT-23A is equivalent to EIAJ SC-74A
2004 Microchip Technology Inc.
DS21451D-page 1

1 page




TC6504 pdf
TC6501/2/3/4
3.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1: PIN FUNCTION TABLE
TC6501 TC6502 TC6503 TC6504 Symbol
1, 2 1, 2 1, 2 1, 2 GND
3 3 3 3 HYST
4 4 4 4 VCC
5 — — — TOVER
—5
— — TOVER
— — 5 — TUNDER
——
5 TUNDER
Description
Ground
Hysteresis Input
Supply Input (+2.7V to +5.5V)
Open-Drain, Active-Low Output
Push/Pull Active-High Output
Open-Drain, Active-Low Output
Push/Pull Active-High Output
3.1 Ground
Connect the device ground pins directly to the PCB
ground and minimize the length of the connection. The
thermal resistance to the die is at a minimum at Pin 2.
3.2 Hysteresis Input (HYST)
Either 2°C (GND) or 10°C (VCC) of hysteresis is
selected by connecting HYST to GND or VCC.
3.3 Supply Input (VCC)
A 100 pF or greater decoupling capacitor from VCC to
GND is recommended.
3.4 Open-Drain, Active-Low Output
(TC6501) (TOVER)
The voltage at the TOVER pin is equal to a logic-low
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-
up resistor is required (a 100 kpull-up resistor is
recommended). The voltage on this pin can be higher
than VCC, though the voltage must not exceed the
absolute maximum input voltage of 7.0V.
3.5 Push/Pull Active-High Output
(TC6502) (TOVER)
The voltage at TOVER is equal to a logic-high level if the
sensor detects a temperature greater than the factory-
programmed threshold temperature.
3.6 Open-Drain, Active-Low Output
(TC6503) (TUNDER)
The voltage at the TUNDER pin is equal to a logic-low
level if the sensor detects a temperature that is less
than the factory-programmed threshold temperature.
Because this is an open-drain output, an external pull-
up resistor is required (a 100 kpull-up resistor is
recommended). The voltage on this pin can be higher
than VCC, though the voltage must not exceed the
absolute maximum input voltage of 7.0V
3.7 Push/Pull Active-High Output
(TC6504) (TUNDER)
The voltage at TUNDER is equal to a logic-high level if
the sensor detects a temperature less than the factory-
programmed threshold temperature.
2004 Microchip Technology Inc.
DS21451D-page 5

5 Page





TC6504 arduino
Product Tape and Reel Specification
TC6501/2/3/4
Device
Marking
User Direction of Feed
Pin 1
W, Width
of Carrier
Tape
Pin 1
Standard Reel Component Orientation
P, Pitch
Reverse Reel Component Orientation
2004 Microchip Technology Inc.
DS21451D-page 11

11 Page







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