A4941GLPTR-A-T データシートの表示（PDF） - Allegro MicroSystems

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A4941GLPTR-A-T

Three-Phase Sensorless Fan Driver

Allegro MicroSystems 

A4941

Three-Phase Sensorless Fan Driver

ELECTRICAL CHARACTERISTICS Valid at TJ = –40 to 105°C, VBB = 5 to 16 V*; unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

VBB Supply Current

IBB

–

IBBST Standby mode, PWM = 0 V, SLEW = FC = O/C

–

Total Driver RDS(on) (Sink + Source)

RDS(on) I = 800 mA, TJ = 25°C

–

Overcurrent Threshold

VOCL

180

PWM Low Level

VIL

–

PWM High Level

VIH

2

Input Hysteresis

VHYS

–

PWM, VIN = 0 V

–25

Logic Input Current

IIN

SLEW, VIN = 0 V

–70

FC, VIN = 0 V

–30

Output Saturation Voltage

VSAT I = 5 mA

–

FG Output Leakage

IFG

V = 16 V

–

Protection Circuitry

2.5

5

mA

25

50

μA

800

1200

mΩ

200

220

mV

–

0.8

V

–

–

V

300

600

mV

–15

–5

μA

–50

–20

μA

–15

–5

μA

–

0.3

V

–

1

μA

Lock Protection

ton

toff

1.6

2

2.4

s

4

5

6

s

Thermal Shutdown Temperature

TJTSD Temperature increasing

150

165

180

°C

Thermal Shutdown Hysteresis

TJHYS Recovery = TJTSD – ∆TJ

–

15

–

°C

VBB Undervoltage Lockout (UVLO)

VUVLO VBB rising

–

4.3

4.7

V

*For the A4941GLPTR-T the electrical test is performed at 12 V only and characterized across the voltage range.

Allegro MicroSystems, LLC

3

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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