MAX6642 查看數據表（PDF） - Maxim Integrated

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MAX6642

±1°C, SMBus-Compatible Remote/Local Temperature Sensor with Overtemperature Alarm

Maxim Integrated 

MAX6642

±1°C, SMBus-Compatible Remote/

Local Temperature Sensor with

Overtemperature Alarm

Absolute Maximum Ratings

All Voltages Referenced to GND

VCC ...........................................................................-0.3V to +6V

DXP.............................................................-0.3V to (VCC + 0.3V)

SCLK, SDA, ALERT ..................................................-0.3V to +6V

SDA, ALERT Current ...........................................-1mA to +50mA

Continuous Power Dissipation (TA = +70°C)

6-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW

ESD Protection (all pins, Human Body Model) ................±2000V

Junction Temperature ......................................................+150°C

Operating Temperature Range .........................-40°C to +125°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

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.

Electrical Characteristics

(VCC = +3.0V to +5.5V, TA = -40°C to +125°C, unless otherwise specified. Typical values are at VCC = +3.3V and TA = +25°C.) (Note 1)

PARAMETER

Supply Voltage

Temperature Resolution

SYMBOL

VCC

CONDITIONS

MIN TYP MAX UNITS

3.0

5.5

V

0.25

°C

10

Bits

Remote Temperature Error

Local Temperature Error

Supply Sensitivity of Temperature

Error

Undervoltage Lockout Threshold

Undervoltage Lockout Hysteresis

Power-On-Reset (POR) Threshold

POR Threshold Hysteresis

Standby Supply Current

Operating Current

Average Operating Current

Conversion Time

Conversion Rate

Remote-Diode Source Current

ALERT

Output-Low Sink Current

Output-High Leakage Current

VCC = 3.3V

VCC = 3.3V

TRJ = +60°C to +100°C,

TA = +25°C to +85°C

TRJ = 0°C to +125°C

TRJ = +125°C to +150°C

TA = +60°C to +100°C

TA = 0°C to +125°C

UVLO Falling edge of VCC disables ADC

VCC falling edge

SMBus static

During conversion

tCONV

fCONV

IRJ

From stop bit to conversion completion

High level

Low level

VOL = 0.4V

VOL = 0.6V

VOH = VCC

-1.0

+1.0

°C

-3.0

+3.0

-3.5

+3.5

-2.0

+2.0

°C

-3.0

+3.0

±0.2

°C/V

2.4

2.7

2.95

V

90

mV

1.5

2.0

2.4

V

90

mV

3

10

µA

0.5

1.0

mA

260

µA

106

125

143

ms

8

Hz

80

100

120

µA

8

10

12

1

mA

4

1

µA

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