A3971SLB View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

MFG CO.

A3971SLB

DUAL DMOS FULL-BRIDGE DRIVER

Allegro MicroSystems 

1 2 3 4 5 6 7 8

3971

DUAL DMOS

FULL-BRIDGE DRIVER

ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 50 V, VDD = 5.0 V (unless otherwise noted).

Limits

Characteristic

Symbol Test Conditions

Min. Typ. Max. Units

Load Supply Voltage Range

Logic Supply Voltage Range

Load Supply Current

Logic Supply Current

Output Drivers

VBB

Operating

10

—

50

V

VDD

Operating

4.5 5.0 5.5

V

IBB

Operating, each supply, no load

—

—

3.0 mA

IDD

Operating

—

—

5.0 mA

Output Leakage Current

Output ON Resistance

Body Diode Forward Voltage

High-Side Gate Voltage

Control Logic

IDSS

rDS(on)

VF

VCP

VOUT = VBB

VOUT = 0 V

High-side switch, IOUT = -2.5 A

Low-side switch, IOUT = 2.5 A

Source diode, IF = 2.5 A

Sink diode, IF = 2.5 A

C = 0.22 µF, reference VBB

— <1.0 20

µA

— <-1.0 -20 mA

—

325 375 mΩ

—

175 200 mΩ

—

1.2

—

V

—

1.0

—

V

6.0 6.5 7.0

V

Logic Input Voltage

Logic Input Current

Propagation Delay Time

VIN(0)

VIN(1)

IIN(0)

IIN(1)

tPD

VIN = 0 V

VIN = 5.0 V

50% to 90%:

PWM change to source off

—

—

0.8

V

2.0

—

—

V

— <1.0 -5.0 µA

—

20

50

µA

—

50

—

ns

PWM change to sink off

—

60

—

ns

PWM change to source on

—

565

—

ns

PWM change to sink on

—

665

—

ns

Disable to source on

—

150

—

ns

Disable to sink on

—

250

—

ns

Thermal Shutdown Temperature

TJ

—

165

—

°C

Thermal Shutdown Hysteresis

∆TJ

—

15

—

°C

UVLO Threshold

VUVLO

Increasing VDD

3.9 4.15 4.4

V

UVLO Hysteresis

∆VUVLO

— 0.15 —

V

NOTES: 1. Typical Data is for design information only.

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

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