ADM1033ARQZ-REEL データシートの表示（PDF） - ON Semiconductor

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ADM1033ARQZ-REEL

Thermal Monitor and Fan Speed (RPM) Controller

ON Semiconductor 

ADM1033

ABSOLUTE MAXIMUM RATINGS

Parameter

Rating

Unit

Positive Supply Voltage (VCC)

−0.3, +6.5

V

Voltage on Any Input or Output Pin except FAN_FAULT and LOCATION

−0.3 to VDD +6.5

V

Voltage on FAN_FAULT (Note 1)

VCC

Voltage on LOCATION

VCC + 0.3

V

Input Current at Any Pin

±20

mA

Maximum Junction Temperature (TJ max)

Storage Temperature Range

150

°C

−65 to +150

°C

Lead Temperature, Soldering (10 s)

300

°C

IR Reflow Peak Temperature

220

°C

ESD Rating − All Pins

1500

V

1. During powerup the voltage on FAN_FAULT should not be higher than VCC.

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

NOTE: This device is ESD sensitive. Use standard ESD precautions when handling.

THERMAL CHARACTERISTICS

16−Lead QSOP Package

Parameter

Rating

qJA = 150°C/W, qJC = 39°C/W

PIN ASSIGNMENT

Pin No.

Mnemonic

1

DRIVE1

2

TACH1

3

ALERT Comp

4

NC

5

GND

6

VCC

7

THERM

8

FAN_FAULT/REF

9

D1−

10

D1+

11

NC

12

NC

13

LOCATION

14

ALERT

15

SDA

16

SCL

Description

DRIVE1 Pin Drives Fan 1. Open−drain output. Requires a pullup resistor.

Fan 1 Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed.

Open−Drain Active Low Output. Assets low whenever a measurement goes outside its programmed

limits if not masked. Automatically goes high again when the measured parameter falls back within

its limits.

No Connect.

Ground for Analog and Digital Circuitry.

Power. Can be powered by 3.3 V standby power if monitoring in low power states is required.

Can be configured as an overtemperature interrupt output, or as an input (to monitor PROCHOT

output of an INTEL CPU). A timer measures assertion times on the THERM pin (either input or output).

FAN_FAULT: Open−Drain Output. Asserted low when one or both fans stall. Requires a pullup

resistor to VCC. REF: Analog Input Reference for the THERM Input.

Cathode Connection for the First Thermal Diode or Diode−Connected Transistor.

Anode Connection for the First Thermal Diode or Diode−Connected Transistor.

No Connect.

No Connect.

8−Level Analog Input. Used to determine the correct SMBus version and the SMBus address (in

fixed and discoverable mode) and to set the LLL bits in the UDID (in ARP−capable mode).

Open−Drain Output. SMBusALERT pin. Alerts the system in the case of out−of−limit events, such as

over temperature. Can be configured as sticky SMBus mode or comparator mode.

Serial Bus Bidirectional Data. Connects to the SMBus master’s data line. Requires pullup resistor if

not provided elsewhere in the system.

Serial SMBus Clock Input. Connects to the SMBus master’s clock line. Requires pullup resistor if not

already provided in the system.

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