MCP9510CT-E/CH Microchip Technology, MCP9510CT-E/CH Datasheet - Page 11

• Manufacturer Part Number: MCP9510CT-E/CH
• Description: IC TEMP SWITCH OD 125C SOT23-6
• Manufacturer: Microchip Technology

Specifications of MCP9510CT-E/CH

• Sensing Temperature: -40°C ~ 125°C
• Output Type: Active High, Low/Push-Pull, Open Drain
• Voltage - Supply: 2.7 V ~ 5.5 V
• Accuracy: ±0.5°C
• Package / Case: SOT-23-6
• Ic Output Type: Logic
• Sensing Accuracy Range: ± 0.5°C
• Supply Current: 50µA
• Supply Voltage Range: 2.7V To 5.5V
• Sensor Case Style: SOT-23
• No. Of Pins: 6
• Termination Type: SMD
• Full Temp Accuracy: +/- 0.5 C
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Temperature Sensing Range: -40°C To +125°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: MCP9510CT-E/CHTR

4.0
The MCP9509/10 integrates a temperature switch with
a user programmable threshold. The temperature
switch threshold or alert limit is programmed using an
external resistor R
the die temperature crosses the programmed alert
limit. The MCP9509 has an Open-Drain output which
requires an external pull-up resistor for operation. The
MCP9510 output can be configured to three user
selectable output configurations. The OUTSET pin is
used to select Active-Low Push-Pull, Active-Low
Open-Drain (with internal 100 kΩ pull-up resistor),
Active-High Push-Pull output configurations. In addi-
tion, this device provides user selectable hysteresis of
2°C and 10°C (typical).
4.1
The SET input pin is used to connect an external
resistor R
SET pin outputs a constant current I
R
V
FIGURE 4-1:
When the thermal diode voltage exceeds V
sensor
determined by the state of the OUTSET pin.
4.2
This pin is used to select the device output configura-
tion. This feature enables in-circuit device output con-
figuration by driving this pin with a microcontroller I/O
pin to Output-HIGH, Output-LOW, or High-Impedance
input.
conditions.
The input structure of this pin consists of a resistor lad-
der and comparators to determine OUTSET level
threshold.
The OUTSET input resistance must be carefully
considered for leakage current when connecting volt-
age source to change output configuration.
© 2008 Microchip Technology Inc.
SET,
SET
V
SET
R
SET
(Shown in
is compared to an internal thermal diode.
Figure 4-4
FUNCTIONAL DESCRIPTION
SET Input Pin
MCP9510 OUTSET Input Pin
output
SET
Figure 4-2
SET
. The resistor sets the alert threshold. The
Figure
shows the configuration and output
asserts.
SET
. A logic signal is asserted when
shows the circuit configuration.
SET input.
I
4-1). The voltage across R
SET
R
x
The
Thermal
Diode
+
-
assert
SET
(~5 µA) to bias
polarity
SET
OUT/
OUT
, the
SET,
is
FIGURE 4-2:
Structure.
The OUTSET pin input impedance Z
the internal resistance R
structure is a voltage divider network from V
Therefore, the leakage current on the OUTSET pin is a
function of change in V
4.3
The MCP9509/10 family has a user selectable
hysteresis input pin HYST. Hysteresis can be externally
selected to either 2°C (HYST = GND) or 10°C
(HYST = V
of change in hysteresis.
For example, if the alert temperature threshold is set to
T
put configuration, the output asserts Low when temper-
ature exceeds 100°C ± T
asserted Low until temperautre falls below T
(HYST = GND) or 90°C (HYST = V
FIGURE 4-3:
OUTSET
MCP9510
SET
= 100°C (R
V
Pin
HYST Input Pin (Hysteresis Select)
Cold
DD
10°C Typical Hysteresis
).
R
R
T
Figure 4-3
A
A
HYST
SET
Temperature
= 16.1 kΩ) with an Active-Low out-
MCP9509/10
MCP9510 OUTSET Input
Output Hysteresis.
DD
R
R
R
1
2
3
A
and the V
shows graphical description
= 1 MΩ (typical). The input
ACY
T
. The output remains
SET
2°C Typical
Hysteresis
DD
Hot
OSET
V
DS22114A-page 11
OUTSET
).
DD
+
-
+
-
.
HYST
is set by
, 98°C
DD
.