MAXIM MAX6513 User Manual
General Description
The MAX6513 is a fully integrated, remote temperature
switch that uses an external P-N junction (typically a
diode-connected transistor) as the sensing element to
measure the remote temperature. The device asserts a
logic signal when the temperature crosses a factoryprogrammed threshold. Available trip thresholds are
from +45°C to +125°C in 10°C increments. Accuracy is
within ±3°C (T
A
= -5°C to +55°C) or ±5°C (TA= -40°C
to +85°C). Hysteresis is pin selectable to 5°C or 10°C.
The MAX6513 has an active-high CMOS output. The
output is asserted when the temperature exceeds the
threshold value. The active-high CMOS output can
directly drive a power FET to control a cooling fan.
The MAX6513 operates from a +3.0V to +5.5V supply
and typically consumes 400µA of supply current. It is
available in a 6-pin lead-free TDFN package.
Applications
CPU Temperature Monitoring in High-Speed
Computers
Multichip Modules
Battery Packs
Temperature Control
Temperature Alarms
Fan Control
Features
♦ Continuously Measure External Junction
Temperature
♦ Factory-Programmed Temperature Threshold
from +45°C to +125°C in 10°C Increments
♦ Insensitive to Series Parasitic Resistance
♦ Active-High Output for Direct Fan Control
♦ < 100ms Response Time
♦ Accuracy
±3°C (T
REMOTE
=
+45°C to +125°C, T
A
= -5°C to +55°C)
±5°C (T
REMOTE
=
+45°C to +125°C, T
A
= -40°C to +85°C)
♦ Pin-Selectable 5°C or 10°C Hysteresis
♦ 400µA Average Current Consumption
♦ +3.0V to +5.5V Supply Range
♦ 6-Pin TDFN Package (Lead(Pb)-Free) with
Exposed Pad
MAX6513
Low-Cost, Remote Temperature Switch
________________________________________________________________
Maxim Integrated Products
1
19-1819; Rev 3; 2/11
Ordering Information
Note: These parts are offered in nine standard temperature
versions with a minimum order of 2500 pieces. To complete
the suffix information, select an available trip point in degrees
centigrade from the device marking codes table. For example,
the MAX6513TT065+T describes a MAX6513 in a 6-pin TDFN
package with a +65°C threshold.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*
EP = Exposed pad.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Typical Operating Circuit
PART TEMP RANGE PIN-PACKAGE
MAX6513TT_ _ _ +T -40°C to +85°C 6 TDFN-EP*
3.3V
V
DD
μP
C
DXP
S
DXN
HYST
MAX6513
2μF
TOVER (TO MICROPROCESSOR FAN
CONTROLLER, SHUTDOWN, ETC.)
MAX6513
Low-Cost, Remote Temperature Switch
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= +3.0V to +5.5V, CS= 2200pF, TA= -40°C to +85°C, T
REMOTE
= +45°C to +125°C (Note 1), unless otherwise noted. Typical
values are at T
A
= +25°C.) (Note 2)
Stresses beyond 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 beyond 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.
Note 1: T
REMOTE
refers to the temperature of the remote-sensing junction. TArefers to the temperature of the MAX6513 package.
Note 2: All parameters are 100% production tested at T
A
= +25°C. Specifications over temperature limits are guaranteed by design.
Note 3: This parameter is guaranteed by design to ±3.5 sigma.
Supply Voltage (V
DD
) ...............................................-0.3V to +6V
DXP, DXN, HYST, TOVER...........................-0.3V to (V
DD
+ 0.3V)
TOVER Output Current............................................-1mA/+50mA
DXN Input Current...................................................-1mA/+50mA
Current (all other pins)......................................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
TDFN (derate 18.2mW/°C above +70°C)...................1455mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature ....................................................+260°C
PARAMETER S YMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
Supply Current I
Temperature Threshold
Accuracy (Note 3)
Power-Supply Sensitivit y for
Temperature Trip Point
Temperature Threshold
Hysteresis
Response Time 70 120 ms
Input Voltage High V
Input Voltage Low V
Output Voltage High V
Output Voltage Low V
Maximum DXP Source
Current
Minimum DXP Source
Current
DD
DD
T
TH
T
HYST
IH
IL
OH
OL
3.0 5.5 V
400 600 μA
TA = -5°C to +55°C -3.0 +3.0
TA = -40°C to +85°C -5.0 +5.0
HYST = V
HYST = V
0.2 V
I
OUT
I
OUT
0.4V V
DXN = GND
0.4V V
DXN = GND
IL
IH
= 1mA
= 1mA 0.2 V
2V,
DXP
2V,
DXP
-0.6 °C/V
5
10
VDD -
0.2
V
DD
0.2
270 μA
9 μA
V
V
°C
°C
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