ADM1029(2012) Просмотр технического описания (PDF) - ON Semiconductor

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производитель

ADM1029
(Rev.:2012)

Dual PWM Fan Controller and Temperature Monitor for High Availability Systems

ON Semiconductor 

ADM1029

PRESENT1 4

FAULT1 2

DRIVE1 1

ADM1029

PWM

CONTROLLER

VCC

8

SERIAL BUS

INTERFACE

SLAVE ADDRESS

REGISTER

FAN 1 STATUS

REGISTER

FAN 1 MIN

SPEED REGISTER

FAN 1 ALARM

SPEED REGISTER

FAN 1 HOT-PLUG

SPEED REGISTER

ADDRESS POINTER

REGISTER

INTERRUPT MASK

REGISTERS

INTERRUPT STATUS

REGISTERS

LIMIT CAMPARATOR

VALUE AND LIMIT

REGISTERS

INTERRUPT

MASKING

TACH1 3

TACH2 22

PRESENT2 21

FAULT2 23

DRIVE2 24

PWM

CONTROLLER

FAN SPEED

COUNTER

FAN 2 STATUS

REGISTER

G.P. I/O REGISTER

FAN 2 MIN

SPEED REGISTER

FAN 2 ALARM

SPEED REGISTER

FAN 2 HOT-PLUG

SPEED REGISTER

ADC

BANDGAP

REFERENCE

ANALOG

MUX

REMOTE SENSOR

SIGNAL

CONDITIONING

BANDGAP

TEMP SENSOR

7

GND

Figure 1. Functional Block Diagram

5 SCL

6 SDA

10 INT

9 CFAULT

12 RESET

11 GPIO2

20 AIN1/GPIO1

19 AIN0/GPIO0

17 D2+/GPIO6

16 D2−/GPIO5

14 D1+/GPIO4

13 D1−/GPIO3

18 TMIN/INSTALL

15 ADD

Table 1. ABSOLUTE MAXIMUM RATINGS

Rating

Value

Unit

Positive Supply Voltage (VCC)

Voltage on Pins 13–18

Voltage on Any Other Input or Output Pin

6.5

V

−0.3 to (VCC + 0.3)

V

−0.3 to +6.5

V

Input Current at Any Pin

5

mA

Package Input Current

20

mA

Maximum Junction Temperature (TJ max)

Storage Temperature Range

150

C

−65 to + 150

C

Lead Temperature

Vapor Phase (60 sec)

Infrared (15 sec)

C

215

200

ESD Rating All Pins

2,000

V

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.

Table 2. THERMAL CHARACTERISTICS

Package Type

24-lead QSOP

qJA

qJC

Unit

105

39

C/W

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