L6285 查看數據表（PDF） - STMicroelectronics
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L6285 Datasheet PDF : 16 Pages
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L6285
simple PWM open loop. The 3 motors are control-
led by the micro through 4 latches of 4 bit each.
The loading of these registers is in serial mode.
The I.C. operates at 5V supply for the logic and at
PIN CONNECTION (Top view)
24V supply for the power stages. The packages
are SDIP42 and PLCC44 with 6 pins devoted to
ground and to sink out the heat produced by
power dissipation.
PWGND
OUT1A
S1,2A
OUT2A
CLAMPA
OUT3A
S3,4A
OUT4A
BOOT1
BOOT3
GND
6 5 4 3 2 1 44 43 42 41 40
7
39
8
38
9
37
10
36
11
35
12
PLCC44
34
13
33
14
32
15
31
16
30
17
29
18 19 20 21 22 23 24 25 26 27 28
PWGND
OUT1B
S1,2B
OUT2B
CLAMPB
OUT3B
S3,4B
OUT4B
VLOW
COSC
GND
D94IN067
OUT2C
COM1,2A
VP
COM3,4A
N.C.
PWGND
OUT1A
S1,2A
OUT2A
CLAMPA
OUT3A
S3,4A
OUT4A
BOOT1
BOOT3
GND
N.C.
BOOT2
SID
SCK
STB
1
2
3
4
5
6
7
8
9
10 SDIP42
11
12
13
14
15
16
17
18
19
20
21
D94IN060A
42
S1,2C
41
OUT1C
40
COM1,2B
39
VP
38
COM3,4B
37
PWGND
36
OUT1B
35
S1,2B
34
OUT2B
33
CLAMPB
32
OUT3B
31
S3,4B
30
OUT4B
29
VLOW
28
COSC
27
GND
26
V2
25
OSC RESET
24
A1TH
23
A0TH
22
VS
ABSOLUTE MAXIMUM RATINGS
Symbol
VP
VS
Vin
ILOW
IHIGH
IpLOW
IpHIGH
Vbou t
Vsense 1;2
Vsense 3
Ιfd DC
Ιfdpk
Pto t
To p
Tstg
Parameter
Power Supply Voltage
Logic Supply Voltage
Logic Input Voltage
Low Side DMOS max DC Current
High Side DMOS max DC Current
Low Side DMOS max Peak Current (1µs On; 50µs OFF)
High Side DMOS max Peak Current (1µs On; 50µs OFF)
Max Output Voltage of Stepper Motor Driver (transient
rcirculation)
Max Voltage ON Vsense (CHA/CHB)
Max Voltage ON Vsense (CHC)
Max DC Current of Forward Diode (DMOS Source Drain Diode)
Max Peak Current of Forward Diode (DMOS Source Drain
Diode) (1µs On; 50µs OFF)
Total Power Dissipation (Tpins = 90°C)
With minimized dissipating copper area (Tamb = 70°C)
Operating Temperature Range
Storage Temperature Range
THERMAL DATA (PLCC44)
Symbol
Rth j-pins
Rth j-amb
Description
Thermal Resistance Junction-pins
Thermal Resistance Junction-ambient
Max.
Max.
2/16
Value
30
7
-0.3 to VS + 0.3
1
1
2
2
60
-1 to 2
-1 to 2
1
2
5
1.6
0 to 150
-40 to 150
SDIP42
15
48
PLCC44
12
50
Unit
V
V
V
A
A
A
A
V
V
V
A
A
W
W
°C
°C
Unit
°C/W
°C/W
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