TCM1617 datasheet(2/14 Pages) MICROCHIP

2 / 14 page

SMBus Thermal Sensor with External Diode Input

TCM1617

TCM1617-1

2/5/99

 2001 Microchip Technology Inc.

DS21485A

ABSOLUTE MAXIMUM RATINGS*

Power Supply Voltage (VDD) .........................................6V

Voltage On Any Pin ............ (GND – 0.3V) to (VDD + 0.3V)

Operating Temperature (TA) .................. –55°C to +125°C

Storage Temperature (TSTG) .................. –65°C to +150°C

SMBus Input/Output Current ................. –1 mA to +50 mA

D– Input Current ......................................................

±1 mA

Max. Power Dissipation ........................................330 mW

*Static-sensitive device. Unused devices must be stored in conductive

material. Protect devices from static discharge and static fields. Stresses

above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. These are stress ratings only and functional

operation of the device at these or any other conditions above 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: VDD = 3.3V, –55°C ≤ TA ≤ 125°C, unless otherwise noted.

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

Power Supply

VDD

Power Supply Voltage

–55

≤ TA ≤ +125°C

3.0

—

5.5

VUV-LOCK

VDD Undervoltage

2.4

2.80

2.95

Lockout Threshold

VPOR

Power-On Reset Threshold

VDD Falling Edge

1.0

1.7

2.3

IDD

Operating Current

0.25 Conv./Sec Rate

—

µA

SMBus Inactive (Note 1)

IDD

Operating Current

2 Conv./Sec Rate

—

180

µA

SMBus Inactive (Note 1)

IDD-STANDBY Standby Supply Current

VDD = 3.3V SMBus Active

—

100

µA

IDD-STANDBY Standby Supply Current

VDD = 3.3V, SMBus Inactive

—

µA

IADD-BIAS

ADD[1:0] Bias Current

Power-Up Only

—

160

—

µA

ALERT# Output

VOL

Output Low Voltage

IOL = 1.0 mA (Note 3)

—

0.4

ADD[1:0] Inputs

VIL

Logic Input Low

—

VDD x 0.3

VIH

Logic Input High

VDD x 0.7

—

STBY# Input

VIL

Logic Input Low

—

VDD x 0.3

VIH

Logic Input High

VDD x 0.7

—

Temp-to-Bits Converter

TRES

Basic Temperature Resolution

—

°C

TIERR1

Internal Diode Temperature

+60

°C ≤ TA ≤ +100°C–2

—

°C

°C ≤ TA ≤ +125°C–3

—

°C

–55

°C ≤ TA < 0°C—

±3—

TEERR

External Diode Temperature

+60

°C ≤ TA ≤ +100°C–3

—

°C

(Note 4)

°C ≤ TA ≤ +125°C–3

–5

—

°C

–55

°C ≤ TA < 0°C

±5—

°C

IDIODE-HIGH

External Diode

(D+) – (D–) ~ 0.65V

—

100

—

µA

High Source Current

IDIODE-LOW

External Diode

(D+) – (D–) ~ 0.65V

—

µA

Low Source Current

VD-SOURCE

D– Source Voltage

—

0.7

—

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