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A3904

Low Voltage Voice Coil Motor Driver

Allegro MicroSystems 

A3904

Low Voltage Voice Coil Motor Driver

ELECTRICAL CHARACTERISTICS Valid at TA= 25°C, VDD = 2.4 to 5.5 V, unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.

General

Supply Current

IDD

Sleep mode (SLEEPZ = Low)

–

0.5

–

<100

UVLO Enable Threshold

UVLO Hysteresis

Thermal Shutdown Temperature

Thermal Shutdown Hysteresis

Power-Up Delay

D-to-A Converter

Resolution

VUV(th)

VUV(hys)

TJTSD

.TJTSD(hys)

td(on)

VDD rising

Temperature increasing

TJTSD(hys) = TJTSD – TJ(recover)

Res

Target = 500 μA / LSB

–

2.1

100

–

–

165

–

15

–

10

–

8

LSB Relative Accuracy

INL

Code = 16 to 255, Endpoint method

–

±4

LSB Differential Nonlinearity

DNL

Guaranteed monotonic

–

–

Maximum Output Current

Gain Error

Gain Error Drift*

Offset Error

Imax

errA

∆errA

IerrOS

Code = 255

TJ = 25°C, Code 16 to 255,

VDD = 2.6 to 3.0 V

TJ = –40°C to 125°C

Code = 1

Code = 16

–

127.5

–10

<3

–

0.2

0

1

0.5

–

Output

Output Voltage Range

Output On Resistance

I2C Interface

VOUT

0.500

–

RDS(on)

RSENSE + RSINK, IOUT = 127.5 mA

–

3

Bus Free Time Between Stop and Start

tBUF

Hold Time Start Condition

thdSTA

Setup Time for Repeated Start Condition

tsuSTA

SCL Low Time

tLOW

SCL High Time

tHIGH

Data Setup Time

tsuDAT

Data Hold Time

thdDAT

Setup Time for Stop Condition

tsuSTO

Logic Input Low Level (SDA, SCL pins)

VIL

Logic Input High Level (SDA, SCL pins)

VIH

Input Hysteresis (SDA, SCL pins)

Vhys

SLEEPZ Input Low Level

VinSLP

SLEEPZ Input High Level

VinSLP

Logic Input Current

IIN

VIN = 0 V to VDD

Output Voltage (SDA pin)

VOL

ILOAD = 1.5 mA

Clock Frequency (SCL pin)

fCLK

Output Fall Time (SDA pin)

tfO

VIH to VIL

*Guaranteed by design and characterization, not production tested

1.3

–

0.6

–

0.6

–

1.3

–

0.6

–

100

–

0

0.6

–

–

–

1.26

–

–

100

–

–

1.5

–

–1

0

–

–

–

–

–

–

Max.

Units

2

mA

500

nA

2.395

V

–

mV

–

°C

–

°C

–

μs

–

bit

–

LSB

±1

LSB

–

mA

10

%FS

–

LSB/°C

5

mA

–

mA

VDD–0.1

V

–

Ω

–

μs

–

μs

–

μs

–

μs

–

μs

–

ns

900

ns

–

μs

0.84

V

–

V

–

mV

0.7

V

–

V

1

μA

0.36

V

400

kHz

250

ns

Allegro MicroSystems, Inc.

3

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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