L6226 datasheet(6/31 Pages) STMICROELECTRONICS

6 / 31 page

Pin connections

L6226

6/31

Doc ID 9452 Rev 4

OCDB

Open drain

output

Bridge B overcurrent detection and thermal

protection pin.An internal open drain

transistor pulls to GND when overcurrent

on bridge B is detected or in case of

thermal protection.

SENSEB

Power

supply

Bridge B source pin. This pin must be

connected to power ground directly or

through a sensing power resistor.

IN1B

Logic input

Bridge B input 1

IN2B

Logic input

Bridge B input 2

PROGCLB

R pin

Bridge B overcurrent level programming. A

resistor connected between this pin and

Ground sets the programmable current

limiting value for the bridge B. By

connecting this pin to Ground the

maximum current is set.This pin cannot be

left non-connected.

ENB

Logic input

Bridge B enable. LOW logic level switches

OFF all Power MOSFETs of bridge B. If not

used, it has to be connected to +5V.

VBOOT

Supply

voltage

Bootstrap voltage needed for driving the

upper Power MOSFETs of both bridge A

and bridge B.

OUT2B

Power

output

Bridge B output 2.

VSB

Power

supply

Bridge B power supply voltage. it must be

connected to the supply voltage together

with pin VSA.

VSA

Power

supply

Bridge A power supply voltage. it must be

connected to the supply voltage together

with pin VSB.

OUT2A

Power

output

Bridge A output 2.

VCP

Output

Charge pump oscillator output.

Table 4.

Pin description (continued)

Pin n.

Name

Type

Function

SO24/

PowerDIP24

PowerSO36

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