ADM1033ARQZ-RL7 datasheet(4/35 Pages) ONSEMI

Il numero della parte	ADM1033ARQZ-RL7

Spiegazioni elettronici	Thermal Monitor and Fan Speed (RPM) Controller

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ADM1033

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ELECTRICAL CHARACTERISTICS (TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted. (Note 1)

Parameter

Test Conditions / Comments

Min

Typ

Max

Unit

Power Supply

Supply Voltage, VCC (Note 2)

3.0

3.30

3.6

V

Supply Current, ICC

Interface inactive, ADC active

3.0

mA

Standby mode

900

mA

Undervoltage Lockout Threshold

2.5

V

Power−On Reset Threshold

1.0

2.4

V

Temperature−to−Digital Converter

Internal Sensor Accuracy

20°C ≤ TA ≤ 60°C

−40°C ≤ TA ≤ +100°C

−4.0

±1.0

±2.0

+2.0

°C

Resolution

0.03125

°C

External Diode Sensor Accuracy

−40°C ≤ TD ≤ +100°C; TA = +40°C

−40°C ≤ TD ≤ +100°C; +20°C ≤ TA ≤ +60°C

−40°C ≤ TD ≤ +100°C; −40°C ≤ TA ≤ +100°C

−3.0

±0.5

±1.0

±1.25

+2.0

°C

Resolution

0.03125

°C

Remote Sensor Source Current

High level

Mid level

Low level

85

34

5.0

mA

Series Resistance Cancellation

1000

W

Power Supply Sensitivity

±1.0

%/V

Conversion Time (Local Temperature)

Averaging enabled

11

ms

Conversion Time (Remote Temperature)

Averaging enabled

32

ms

Total Conversion Time

Averaging enabled

43

ms

Open−Drain Digital Outputs (ALERT, THERM, FAN_FAULT, DRIVE1, DRIVE2) (Note 3)

Output Low Voltage, VOL

IOUT = −6.0 mA; VCC = +3.0 V

0.4

V

High Level Output Leakage Current, IOH

VOUT = VCC; VCC = 3.0 V

0.1

1.0

mA

Digital Input Leakage Current (TACH1, TACH2)

Input High Current, IIH

−VIN = VCC

−1.0

mA

Input Low Current, IIL

VIN = 0

1.0

mA

Input Capacitance, CIN

7.0

pF

Digital Input Logic Levels (TACH1, TACH2)

Input High Voltage, VIH

2.0

5.5

V

Input Low Voltage, VIL

−0.3

+0.8

V

Hysteresis

500

mV p−p

Open−Drain Serial Data Bus Output (SDA)

Output Low Voltage, VOL

IOUT = −6.0 mA; VCC

0.4

V

High Level Output Leakage Current, IOH

VOUT = VCC

0.1

1.0

mA

Serial Bus Digital Inputs (SCL, SDA)

Input High Voltage, VIH

2.1

V

Input Low Voltage, VIL

0.8

V

Hysteresis

500

mV

Analog Inputs (Location, REF)

Input Resistance

80

125

160

kW

1. Typicals are at TA = 25°C and represent most likely parametric norm. Standby current typ. is measured with VCC = 3.3 V. Timing

specifications are tested at logic levels of VIL = 0.8 V for a falling edge and VIH = 2.1 V for a rising edge.

2. Operation at 5.5 V is guaranteed by design, not production tested.

3. Recommend use of 100 kW pullup resistors for all open−drain outputs from the ADM1033.

4. Guaranteed by design, not production tested.

5. SMBus timeout disabled by default. See the SMBus section for more information.

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