L6234 데이터 시트보기 (PDF) - STMicroelectronics
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L6234 Datasheet PDF : 15 Pages
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Pin connections
2
Pin connections
Figure 2. Pin connections
L6234
Table 2. Pin functions
Pin no. Name
Function
1, 10
11, 20
GND
Common ground terminal. In the PowerSO package these pins are used to
dissipate the heat forward the PCB.
2
SENSE1
A sense resistor connected to this pin provides feedback for motor current
control for the bridges 1 and 2.
3
EN 2
8
EN 1
Enable of the channels 1/2/3. A logic LOW level on this pin switches off both
power DMOS of the related channel.
13
EN 3
4
IN 2 Logic input of channels 1/2/3. A logic HIGH level (when the corresponding EN
7
IN 1 pin is HIGH) switches ON the upper DMOS power transistor, while a logic
14
IN 3 LOW switches ON the corresponding low side power DMOS.
5
OUT 2
6
OUT 1 Output of the channels 1/2/3.
15
OUT 3
9, 12
16
Vs
VREF
Power supply voltage.
Internal voltage reference. A capacitor connected from this pin to GND
increases the stability of the power DMOS drive circuit.
17
VCP Bootstrap oscillator. Oscillator output for the external charge pump.
18
VBOOT Overvoltage input to drive the upper DMOS
19
SENSE2
A sense resistor connected to this pin provides feedback for motor current
control for the bridge 3.
4/15
DocID1107 Rev 11
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