Datasheet

5/22
L6227
(6) Also connected at the output drain of the Over current and Thermal protection MOSFET. Therefore, it has to be driven putting in
series a resistor with a value in the range of 2.2KΩ - 180KΩ, recommended 100KΩ.
23 8 EN
A
Logic Input (6) Bridge A Enable. LOW logic level switches OFF all Power
MOSFETs of Bridge A. 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.
24 9 VREF
A
Analog Input Bridge A Current Controller Reference Voltage.
Do not leave this pin open or connect to GND.
ELECTRICAL CHARACTERISTICS
(T
amb
= 25 °C, V
s
= 48V, unless otherwise specified)
Symbol Parameter Test Conditions Min Typ Max Unit
V
Sth(ON)
Turn-on Threshold 5.8 6.3 6.8 V
V
Sth(OFF)
Turn-off Threshold 5 5.5 6 V
I
S
Quiescent Supply Current All Bridges OFF;
T
j
= -25°C to 125°C
(7)
510mA
T
j(OFF)
Thermal Shutdown Temperature 165 °C
Output DMOS Transistors
R
DS(ON)
High-Side +Low-Side Switch ON
Resistance
T
j
= 25 °C 1.47 1.69 Ω
T
j
=125 °C
(7)
2.35 2.7 Ω
I
DSS
Leakage Current EN = Low; OUT = V
S
2mA
EN = Low; OUT = GND -0.3 mA
Source Drain Diodes
V
SD
Forward ON Voltage I
SD
= 1.4A, EN = LOW 1.15 1.3 V
t
rr
Reverse Recovery Time I
f
= 1.4A 300 ns
t
fr
Forward Recovery Time 200 ns
Logic Input
V
IL
Low level logic input voltage -0.3 0.8 V
V
IH
High level logic input voltage 2 7 V
I
IL
Low Level Logic Input Current GND Logic Input Voltage -10 µA
I
IH
High Level Logic Input Current 7V Logic Input Voltage 10 µA
V
th(ON)
Turn-on Input Threshold 1.8 2.0 V
V
th(OFF)
Turn-off Input Threshold 0.8 1.3 V
V
th(HYS)
Input Threshold Hysteresis 0.25 0.5 V
Switching Characteristics
t
D(on)EN
Enable to out turn ON delay time
(8)
I
LOAD
=1.4A, Resistive Load 500 800 ns
PIN DESCRIPTION (continued)