MAX6505_11 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – Dual Trip SOT Temperature Switches No External Components Required

19-1712; Rev 1; 2/11
Dual Trip SOT Temperature Switches
General Description
The MAX6505–MAX6508 temperature switches have dual
logic outputs that assert when the die temperature cross-
es their trip thresholds. Trip thresholds are factory pro-
grammed to convenient temperatures in 5°C increments.
The MAX6505/MAX6506 have an ALARM output that
asserts when the temperature is above the factory-pro-
grammed thresholds (available from -40°C to +125°C).
They also have a WARN output that asserts when the
temperature is several degrees below the ALARM thresh-
old. The difference between the ALARM and WARN
thresholds (ΔT_AW) is pin selectable to +5°C, +10°C,
+20°C, or +30°C. The MAX6505’s logic outputs are open
drain, while the MAX6506’s logic outputs are push-pull.
The MAX6507 has open-drain outputs (OVER, OK), and
the MAX6508 has push-pull outputs (OVER, OK), each
with two factory-programmed threshold temperatures
(T_OVER and T_UNDER) in the wide range of -40°C to
+125°C. The overtemperature output asserts when the
temperature is above T_OVER. When the temperature is in
the desired window (less than T_OVER and greater than
T_UNDER), OK (OK) asserts.
The MAX6505–MAX6508 are accurate to ±0.5°C (typ),
±5.5°C (max). Operating from a +2.5V to +5.5V supply,
these low-cost devices typically consume 30µA supply
current and require no external components for setting
trip points. The MAX6505–MAX6508 are available in a
6-pin SOT23 package.
________________________Applications
µP Temperature Monitoring in High-Speed
Computers
Temperature Control
Temperature Alarms
Fan Control
Typical Operating Circuits appear at end of data sheet.
TOP VIEW
+
WARN
(WARN)
1
MAX6505
GND 2 _MAX6506
6
ALARM
(ALARM)
5 S0
Features
♦ ±0.5°C (typ) Threshold Accuracy Over Full
Temperature Range
♦ No External Components Required
♦ Low Cost
♦ 30µA (typ) Supply Current
♦ Factory-Programmed Thresholds from -40°C to
+125°C in 5°C Increments
♦ Open-Drain Outputs (MAX6505/MAX6507),
Push-Pull Outputs (MAX6506/MAX6508)
♦ Pin Selectable 2°C, 10°C Hysteresis
(MAX6507/MAX6508)
♦ Pin Selectable +5°C, +10°C, +20°C, +30°C
T_ALARM - T_WARN (MAX6505/MAX6506)
♦ SOT23 Package
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX6505UT_ _ _ _+T -40°C to +125°C 6 SOT23
MAX6506UT_ _ _ _+T -40°C to +125°C 6 SOT23
MAX6507UT_ _ _ _+T -40°C to +125°C 6 SOT23
MAX6508UT_ _ _ _+T -40°C to +125°C 6 SOT23
Note: To complete the suffix information for the MAX6505/
MAX6506, add P or N for positive or negative trip tempera-
ture, and select an available trip point in degrees centigrade.
For example, the MAX6505UTP055+T describes a MAX6505 in
a SOT23 package with a +55°C threshold (Table 3). Contact
the factory for pricing and availability of temperature versions
(minimum order 10,000 pieces).
To complete the suffix information for MAX6507/MAX6508, see
Table 4.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Selector Guide appears at end of data sheet.
Pin Configurations
+
OK
(OK)
1
MAX6507
GND 2 _MAX6508
6
OVER
(OVER)
5 N.C.
S1 3
4 V_CC
( ) ARE FOR MAX6506.
SOT23
S0 3
4 V_CC
SOT23
( ) ARE FOR MAX6508.
________________________________________________________________ Maxim Integrated Products 1
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.