Datasheet

L6227
4/22
PIN DESCRIPTION
PACKAGE
Name Type Function
SO24/
PowerDIP24
PowerSO36
PIN # PIN #
1 10 IN1
A
Logic input Bridge A Logic Input 1.
2 11 IN2
A
Logic input Bridge A Logic Input 2.
3 12 SENSE
A
Power Supply Bridge A Source Pin. This pin must be connected to Power
Ground through a sensing power resistor.
413RC
A
RC Pin RC Network Pin. A parallel RC network connected
between this pin and ground sets the Current Controller
OFF-Time of the Bridge A.
5 15 OUT1
A
Power Output Bridge A Output 1.
6, 7,
18, 19
1, 18,
19, 36
GND GND Signal Ground terminals. In Power DIP and SO packages,
these pins are also used for heat dissipation toward the
PCB.
8 22 OUT1
B
Power Output Bridge B Output 1.
924RC
B
RC Pin RC Network Pin. A parallel RC network connected
between this pin and ground sets the Current Controller
OFF-Time of the Bridge B.
10 25 SENSE
B
Power Supply Bridge B Source Pin. This pin must be connected to Power
Ground through a sensing power resistor.
11 26 IN1
B
Logic Input Bridge B Input 1
12 27 IN2
B
Logic Input Bridge B Input 2
13 28 VREF
B
Analog Input Bridge B Current Controller Reference Voltage.
Do not leave this pin open or connect to GND.
14 29 EN
B
Logic Input (6) Bridge B Enable. LOW logic level switches OFF all Power
MOSFETs of Bridge B. This pin is also connected to the
collector of the Overcurrent and Thermal Protection
transistor to implement over current protection.
If not used, it has to be connected to +5V through a
resistor.
15 30 VBOOT Supply
Voltage
Bootstrap Voltage needed for driving the upper Power
MOSFETs of both Bridge A and Bridge B.
16 32 OUT2
B
Power Output Bridge B Output 2.
17 33 VS
B
Power Supply Bridge B Power Supply Voltage. It must be connected to
the supply voltage together with pin VS
A
.
20 4 VS
A
Power Supply Bridge A Power Supply Voltage. It must be connected to
the supply voltage together with pin VS
B
.
21 5 OUT2
A
Power Output Bridge A Output 2.
22 7 VCP Output Charge Pump Oscillator Output.