EVAL6208N Datasheet, PDF (5/27 Pages) STMicroelectronics – DMOS DRIVER FOR BIPOLAR STEPPER MOTOR

L6208
PIN DESCRIPTION (continued)
PACKAGE
SO24/
PowerDIP24
PowerSO36
Name
PIN #
PIN #
21
5
OUT2_A
22
7
VCP
23
8
RESET
24
9
VREF_A
Type
Function
Power Output Bridge A Output 2.
Output
Charge Pump Oscillator Output.
Logic Input
Reset Pin. LOW logic level restores the Home State
(State 1) on the Phase Sequence Generator State
Machine.
If not used, it has to be connected to +5V.
Analog Input Bridge A Current Controller Reference Voltage.
Do not leave this pin open or connected to GND.
(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.
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
6.6
7
7.4
V
V_Sth(OFF) Turn-off Threshold
5.6
6
6.4
V
I_S Quiescent Supply Current
All Bridges OFF;
T_j = -25°C to 125°C ⁽⁷⁾
5
10
mA
T_j(OFF) Thermal Shutdown Temperature
165
°C
Output DMOS Transistors
R_DS(ON) High-Side Switch ON Resistance T_j = 25 °C
0.34 0.4
Ω
T_j =125 °C ⁽⁷⁾
0.53 0.59
Ω
Low-Side Switch ON Resistance T_j = 25 °C
0.28 0.34
Ω
T_j =125 °C ⁽⁷⁾
0.47 0.53
Ω
I_DSS Leakage Current
EN = Low; OUT = V_S
2
mA
EN = Low; OUT = GND
-0.15
mA
Source Drain Diodes
V_SD Forward ON Voltage
I_SD = 2.8A, EN = LOW
1.15 1.3
V
t_rr Reverse Recovery Time
I_f = 2.8A
300
ns
t_fr Forward Recovery Time
200
ns
Logic Inputs (EN, CONTROL, HALF/FULL, CLOCK, RESET, CW/CCW)
V_IL Low level logic input voltage
-0.3
0.8
V
V_IH High level logic input voltage
2
7
V
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