A1441EELLT-T データシートの表示（PDF） - Allegro MicroSystems

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A1441EELLT-T

Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation

Allegro MicroSystems 

A1441

Low-Voltage Full-Bridge Brushless DC Motor

Driver with Hall Element Commutation

DEVICE CHARACTERISTICS over the voltage and temperature operating range, unless otherwise specified

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Supply Voltage

Total Output Saturation Voltage1

Sleep Mode Supply Current

Load Current Rise Time2

Chopping Settling Time3

¯S¯¯L¯¯E¯¯E¯¯P¯ Input Threshold

¯S¯¯L¯¯E¯¯E¯¯P¯ Input Current

Crossover Dead Time4

Restart Delay5

Magnetic Switchpoints

Startup Polarity

VDD Running

VOUT(Sat)

ILOAD = 100 mA, VDD = 3.6 V

ILOAD = 70 mA, VDD = 2.2 V

IDD(Sleep)

tr(ILOAD) VDD = 3.6 V

ts(CHOP)

VINLO

VINHI

IIN

tDT VOUT switching

tRS

BOP

BRP

BHYS BOP – BRP; BOP > BRP

VOUT1

B<Brp

B>Bop

VOUT2

B<Brp

B>Bop

2.0

–

4.0

V

–

–

500

mV

–

–

400

mV

–

–

10

μA

–

10

–

μs

–

30

–

μs

–

–

0.5

V

VDD–0.7

–

–

–

–

V

1

μA

–

2

–

μs

–

–

225

ms

–

35

75

G

–75

–35

–

G

–

70

–

G

LOW

–

HIGH

–

HIGH

–

LOW

–

1Either VOUT(Sat) = VQ1(Sat) + VQ4(Sat) or VOUT(Sat) = VQ2(Sat) + VQ3(Sat). Total output saturation voltage is a sum of the voltages

across the active output transistors.

2Time period required for current to change from 10% to 90% of it’s value.

3Chopping settling time is the required time to have valid device output after power up of the device.

4Crossover dead time is a time period during which all output transistors are switched off.

5Restart delay is a time period during which only one pair of the output transistors is switched on.

Allegro MicroSystems, Inc.

3

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

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