Rainbow Electronics MAX6512 - Manual

General Description
The MAX6511/MAX6512/MAX6513 are fully integrated,
remote temperature switches that use an external P-N
junction (typically a diode-connected transistor) as the
sensing element to measure the remote temperature.
These devices assert a logic signal when the tempera-
ture crosses a factory-programmed threshold. Available
trip thresholds are from +45°C to +125°C in 10°C incre-
ments. Accuracy is within ±3°C (T
A
= -5°C to +55°C) or
±5°C (T A = -40°C to +85°C). Hysteresis is pin selec-
table to 5°C or 10°C.
The MAX6511 has an active-low CMOS output and the
MAX6513 has an active-high CMOS output. The
MAX6512 has an open-drain output. The output is
asserted when the temperature exceeds the threshold
value. The active-low open-drain output is intended to
interface with a microprocessor (µP) reset or interrupt
input. The active-high CMOS output can directly drive a
power FET to control a cooling fan.
The MAX6511/MAX6512/MAX6513 operate from a
+3.0V to +5.5V supply and typically consume 400µA of
supply current. They are available in a small 6-pin
SOT23 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-Low CMOS Output (MAX6511) or Open-
Drain Output for Overtemperature Alarm
(MAX6512) or Active-High Output (MAX6513) 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 SOT23 Package
MAX6511/MAX6512/MAX6513
Low-Cost, Remote SOT Temperature Switches
________________________________________________________________ Maxim Integrated Products 1
GND
TOVER (TOVER) HYST
1 6 DXP
5 DXN
V DD
MAX6511
MAX6512
MAX6513
TOP VIEW
2
3 4
( ) ARE FOR MAX6513 SOT23 ONLY.
Pin Configuration
19-1819; Rev 0; 10/00
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
*These parts are offered in nine standard temperature versions
with a minimum order of 2500 pieces. To complete the suffix infor-
mation, select an available trip point in degrees centigrade from
the device marking codes table. For example, the
MAX6511UT065-T describes a MAX6511 in a SOT23-6 package
with a +65°C threshold.
PART* TEMP. RANGE
PIN-
PACKAGE
OUTPUT
M AX6 511EUT_ _ _ -T -40 °C to +85°C 6 SOT23-6
CMOS
(Active-Low)
M AX6 512EUT_ _ _ -T -40 °C to +85°C 6 SOT23-6 Open-Drain
M AX6 513EUT_ _ _ -T -40 °C to +85°C 6 SOT23-6
CMOS
(Active-High)
Typical Operating Circuit appears at end of data sheet.