
CHANNEL A AND CHANNEL B (UNIPOLAR MOTORS)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
RDSONL
Low Side DMOS ON Res.
IDS = 0.7A
1.2
RDSONH
High Side DMOS ON Res.
IDS = 0.7A
1.2
IDSSL
Low Side DMOS Leakage
Current
VDS = 60V; output OFF
2
mA
IDSSH
High Side DMOS Leakage
Current
VP = 30V; VO= 0V
-1.5
mA
VREF
Voltage reference to the
Comparator
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
100
220
340
465
125
250
375
500
150
280
410
535
mV
Td
Turn OFF Delay on HIGH
Side DMOS after the
Sensing Current Reach the
Threshold Value
(note 2)
1
s
fmax
Max Chopping Frequency
40
KHz
CHANNEL C (DC MOTORS) (see Fig. 5)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
fosc
Oscillator Frequency
Cosc = 3.3nF; V1 = 2/3VS
17
22
28
KHz
DC
Duty Cycle
V2 = 1/2VS
72
75
81
%
Ib2
Comparator Input Bias
V2 = 200mV
-1
A
Vlow
Open Drain Output
I = 5mA
0.2
0.4
V
RDSONH
High Side DMOS ON Res.
IDS = 0.7A
1.2
RDSONL
Low Side DMOS ON Res.
IDS = 0.7A
1.7
ILH
HSD MOS Leakage Current
VP = 30V; VO = 0V
-1
mA
ILL
LSD MOS Leakage Current
VO = 30V; Vsense = 0V
-1.5
mA
Vfddc
Forward Diode DC Voltage
(DMOS Diode)
Ifdcc = 0.7A
1.4
2
V
fmax
Max Chopping Frequency
40
KHz
Vboot
Voltage on pin Boot1
Vp +7
V
IL boot
Leakage Current on pin Boot1
Vbott = Vp +12V; Vp = 26.5V
200
A
LOGIC LEVEL
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VinL
Input Low Voltage
-0.3
1.35
V
VinH
Input High Voltage
3.15
VS+0.3
V
IinL
Input Low Current
Vin = VinL
-10
A
IinH
Input High Current
Vin = VinH
10
A
ELECTRICAL CHARACTERISTICS (Tj = 25
°C, Vs = 5V, Vp = 24V unless othewise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Vp
Power Supply Voltage
9
26.5
V
Ip
Quiescent Power Supply
Current
(note 1)
7
mA
Vs
Logic Supply Voltage
4.5
5.5
V
Is
Quiescent Logic Supply
Current
(note 1)
20
mA
L6285
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