VNH5250AS-E datasheet(6/18 Pages) STMICROELECTRONICS

6 / 18 page

Block diagram and pin description

VNH5250AS-E

6/18

DocID025102 Rev 2

Figure 2. Configuration diagram (top view)

Fault detection

Signalizes the abnormal behavior of the switch (output

shorted to ground or output shorted to battery) by pulling

down the concerned ENx/DIAGx pin.

Power limitation

Limits the power dissipation of the high-side driver inside

safe range in case of short to ground condition.

Table 3. Pin definitions and functions

Pin N°

Symbol

Function

1, 16

GNDA

Source of low-side switch A

2, 15

OUTA

Source of high-side switch A / drain of low-side switch A

3INA

Clockwise input

4, 5, 12

VCC

Power supply voltage

6INB

Counter clockwise input

7, 10

OUTB

Source of high-side switch B / drain of low-side switch B

8, 9

GNDB

Source of low-side switch B

ENB

Status of high-side and low-side switches B

Output of current sense

ENA

Status of high-side and low-side switches A

Table 4. Pin functions description

Name

Description

VCC

Battery connection.

GND

Power ground.

OUTA

OUTB

Power connections to the motor.

Table 2. Block description (continued)

Name

Description

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