8958

VOICE COIL

MOTOR DRIVER

www.allegromicro.com

ELECTRICAL CHARACTERISTICS at T

A

= +25

CC

= V

BB

= 12 V

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Logic Supply Voltage Range

Operating

8.0

12

16

V

Logic Supply UV Threshold

High-to-low transition

—

2.8

3.0

V

Logic Supply UV Hysteresis

∆V

CC

—

200

—

mV

Supply Current

—

2.0

—

mA

—

23

—

mA

Inhibited Supply Current

—

—

3.0

8.0

mA

Thermal Shutdown Temp.

—

165

—

°C

Thermal Shutdown Hysteresis

∆T

J

—

8.0

—

°C

Output Power Drivers

Output Saturation Voltage

—

250

—

mV

—

450

—

mV

—

750

—

mV

—

950

—

mV

Total Saturation Voltage

—

1.0

1.4

V

—

1.4

2.0

V

Input Offset Voltage

—

5.0

8.0

mV

Input Offset Drift

∆V

IO

——

25

µV/°C

Input Bias Current

—

-150

-500

nA

Ω, T

°C

69

84

105

µA/V

Input Offset Current

——

200

nA

Differential Sense Input Current

—

±300

—

µA

—

3.0

—

mA

Large Signal Gain

±500 mA

1.5

5.0

—

V/mV

Slew Rate

SR

—

4.0

—

V/

µs

Unity Gain Bandwidth

BW

Amplifier A

0.5

1.0

1.7

MHz

Amplifier B

0.5

2.0

2.2

MHz

Common-Mode Rejection

70

90

—

dB

Clamp Diode Forward Voltage

≥ 1.7 V

—

1.0

1.2

V

High-Side Current Limit

°C

—

1.0

1.2

A

Power Supply Rejection

70

90

—

dB

(Source + Sink)

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Negative current is defined as coming out of (sourcing) the specified device terminal.

Typical Data is for design information only.