ADM1027 datasheet(4/56 Pages) AD

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REV. A

–4–

ADM1027

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection. Although the

ADM1027 features proprietary ESD protection circuitry, permanent damage may occur on devices

subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended

to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

ABSOLUTE MAXIMUM RATINGS

Positive Supply Voltage (VCC) . . . . . . . . . . . . . . . . . . . . . 6.5 V

Voltage on 12 VIN Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 V

Voltage on Any Other Input or Output Pin . . . . –0.3 V to +6.5 V

Input Current at Any Pin . . . . . . . . . . . . . . . . . . . . . . . .

±5 mA

Package Input Current . . . . . . . . . . . . . . . . . . . . . . . .

±20 mA

Maximum Junction Temperature (TJ MAX) . . . . . . . . . . 150

∞C

Storage Temperature Range . . . . . . . . . . . . . –65

∞C to +150∞C

Lead Temperature, Soldering

Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215

∞C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

∞C

ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 V

*Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. This is a stress rating only; functional operation of the

device at these or any other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

PIN CONFIGURATION

TOP VIEW

(Not to Scale)

ADM1027

TACH2

TACH1

PWM2/

SMBALERT

TACH3

VID3

SDA

SCL

GND

VCC

VID2

VID1

VID0

PWM3/

ADDRESS ENABLE

TACH4/ADDRESS SELECT

D2–

D2+

D1–

PWM1/XTO

VCCP

2.5VIN

12VIN

D1+

VID4

5VIN

ORDERING GUIDE

Model

Temperature Range

Package Description

Package Option

ADM1027

0ºC to 105ºC

24-Lead QSOP

RQ-24

THERMAL CHARACTERISTICS

24-Lead QSOP Package:

qJA = 123∞C/W, qJC = 27∞C/W

tSU; DAT

tHIGH

tHD; DAT

tLOW

tSU; STO

SCL

SDA

tHD; STA

tSU; STA

tBUF

Figure 1. Diagram for Serial Bus Timing

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