L6234PD datasheet(4/16 Pages) STMICROELECTRONICS

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Pin connections

L6234

4/16

Doc ID 1107 Rev 10

Pin connections

Figure 2.

Pin connections

Table 2.

Pin functions

PowerDIP PowerSO20

Name

Function

OUT 1

OUT 2

OUT 3

Output of the channels 1/2/3.

IN 1

IN 2

IN 3

Logic input of channels 1/2/3. A logic HIGH level (when the

corresponding EN pin is HIGH) switches ON the upper DMOS

Power Transistor, while a logic LOW switches ON the

corresponding low side DMOS Power.

EN 1

EN 2

EN 3

Enable of the channels 1/2/3. A logic LOW level on this pin

switches off both power DMOS of the related channel.

4,7

9, 12

Power supply voltage.

SENSE2

A sense resistor connected to this pin provides feedback for

motor current control for the bridge 3.

SENSE1

A sense resistor connected to this pin provides feedback for

motor current control for the bridges 1 and 2.

VREF

Internal voltage reference. A capacitor connected from this pin

to GND increases the stability of the Power DMOS drive

circuit.

VCP

Bootstrap oscillator. Oscillator output for the external charge

pump.

VBOOT

Overvoltage input to drive the upper DMOS

5,6

15,16

1,10

11,20

GND

Common ground terminal. In PowerDIP and SO packages

these pins are used to dissipate the heat forward the PCB.

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