Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Supply Voltage

7

52

V

Reference Voltage

10

V

Quiescent Supply Current

6.5

mA

Thermal Shutdown

150

°C

Dead Time Protection

300

ns

OUTPUT DMOS TRANSISTOR

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Leakage Current

1mA

ON Resistance

0.3

Ω

SOURCE DRAIN DIODE

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Forward ON Voltage

1.2

V

Reverse Recovery Time

900

ns

Forward Recovery Time

200

ns

LOGIC LEVELS

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Input LOW Voltage

-0.3

0.8

V

Input HIGH Voltage

27

V

Input LOW Current

-10

µA

Input HIGH Current

30

µA

CIRCUIT DESCRIPTION

L6234 is a triple half bridge designed to drive

brushless DC motors.

Each half bridge has 2 power DMOS transistors

Ω. The 3 half bridges can be

controlled independently by means of the 3 inputs

IN1, IN2, IN3 and the 3 inputs EN1, EN2, and

EN3. An external connection to the 3 common

low side DMOS sources is provided to connect a

sensing resistor for constant current chopping ap-

plication.

The driving stage and the logic stage are de-

signed to work from 7V to 52V.

L6234

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