A3906 データシートの表示（PDF） - Allegro MicroSystems

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A3906

Low Voltage Stepper and Single/Dual DC Motor Driver

Allegro MicroSystems 

A3906

Low Voltage Stepper and Single/Dual DC Motor Driver

ELECTRICAL CHARACTERISTICS1,2 valid at TA = 25°C and VBB = 2.5 to 9 V, unless otherwise noted

Characteristics

Symbol

Test Conditions

Min. Typ. Max.

Operating Voltage Range

VBB Supply Current

Output Resistance

Clamp Diode Voltage

Output Leakage Current

Control Logic

VBB

IBB

RDS(on)

Vf

IDSS

2.5

IOUT = 0 mA, PWM = 50 kHz, Duty Cycle = 50%

–

IOUT = 0 mA, outputs disabled, VBB = 9.6 V

–

Sleep mode, VIN < 0.4 V

–

Source driver, IOUT = 400 mA , VBB = 3 V, TJ = 25°C

–

Source driver, IOUT = 400 mA , VBB = 3 V, TJ = 85°C

–

Sink driver, IOUT = 400 mA, VBB = 3 V, TJ= 25°C

–

Sink driver, IOUT = 400 mA, VBB = 3 V, TJ= 85°C

–

I = 400 mA

–

Outputs, VOUT = 9 V

–20

–

5

3

150

0.52

0.710

0.52

0.710

–

–

9

–

–

500

0.68

–

0.68

–

1

20

Logic Input Voltage

Logic Input Current

Input Hysteresis

¯S¯¯L¯¯E¯¯E¯¯P¯ Input

Fault Output

Fault Output Leakage Current

Fault Output Timer

Blank Time

Fixed Off-Time

Propagation Delay Time

Protection Circuitry

VIN(1)

VIN(0)

IIN(1)

IIN(0)

VINhys

VSLEEP(0)

VSLEEP(1)

VFLx

IFLx

tFLx

tBLANK

tOFF

tpd(on)

tpd(off)

VIN = 5.5 V

VIN = 0.8 V

Flag asserted, IFLx = 1 mA

VFLx = 5 V

Reset of PWM latch

Input high to source on, input low to source off

Input low to sink off, input high to sink on

2.0

–

5.5

–

–

0.8

–

<100 500

– <–100 –500

–

150

–

–

–

0.4

2

–

–

–

–

200

–

–

1

–

300

–

2.1

3

3.9

–

30

–

100 235 350

50

100 200

Crossover Delay

tCOD

200

VBB Undervoltage Lockout Threshold

VBBUVLO VBB rising

2.2

VBB Undervoltage Lockout Hysteresis

VBBUVHYS

200

Thermal Shutdown Temperature

TJTSD

–

Thermal Shutdown Hysteresis

TJTSDHYS

–

1For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.

2Specifications over the operating temperature range are assured by design and characterization.

425

2.31

300

165

15

650

2.45

400

–

–

Units

V

mA

mA

nA

Ω

Ω

Ω

Ω

V

μA

V

V

nA

nA

mV

V

V

mV

μA

μs

μs

μs

ns

ns

ns

V

mV

°C

°C

Allegro MicroSystems, Inc.

4

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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