Diodes AH286 Manuel d'utilisateur télécharger pdf (Page 4)

AH286

HALL-EFFECT SMART FAN MOTOR CONTROLLER

AH286

Document number: DS31030 Rev. 12 - 2

4 of 9

www.diodes.com

June 2010

Electrical Characteristics (T

= 25 °C, Vdd

= 12V, unless otherwise specified)

Symbol Characteristics Conditions Min Typ. Max Unit

Idd Supply Current Operating - 2.0 4.0 mA

OFF

Output Leakage Current V

OUT

= 24V - < 0.1 10 μA

RLP-ON

Rotor Lock Protection On Time 0.4 0.5 0.6 Sec

RLP-OFF

Rotor Lock Protection Off Time 2.4 3 3.6 Sec

OUT(SAT)

Output Saturation Voltage

= 300mA - 375 500

= 500mA - 625 900

DS(ON)

Output On Resistance I

= 300mA - 1.25 1.67 ohm

RD Output Vds I

= 10mA - 0.5 - V

Vz Output Zener-Breakdown Voltage 35 42 60 V

Truth Table (Note 3)

IN- IN+ CT OUT1 OUT2 RD Mode

H L L H L L Rotating

L H L L H L Rotating

- - H off off H Lockup protection activated

Notes: 3. Latch-type RD output is low during rotor rotation and high when the rotor is locked (not rotating)

Magnetic Characteristics (T

= 25 °C, Vdd

= 12V, unless otherwise specified, Note 4)

(1mT = 10 Gauss)

Symbol Characteristics Min Typ. Max Unit

Bop Operate Point 10 30 60 Gauss

Brp Release Point -60 -30 -10 Gauss

Bhy Hysteresis - 60 - Gauss

Notes: 4. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.

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Diodes AH286 Manuel d'utilisateur Page 4

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