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参数资料
| 型号： | L9942XP1TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2.5 A, PDSO24 |
| 封装： | ROHS COMPLIANT, SSOP-24 |
| 文件页数： | 10/40页 |
| 文件大小： | 639K |
| 代理商： | L9942XP1TR |
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Electrical specifications
L9942
Doc ID 11778 Rev 6
3.4.4
Charge pump output
The ripple of voltage at CP can suppressed using a capacity of e.g.100 nF.
3.4.5
Outputs: Qxn (x = A; B n = 1; 2)
The comparator, which is monitoring current image of HS, is working during ON cycle of
PWM control. If load current is higher as set value then the signal ILIMIT is generated and
after filter time the bridge is switched off. Test mode gets access to signal ILIMIT and
threshold of current can be measured.
Table 11.
Charge pump output
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
VCP
Charge pump output voltage
VS=7 V
ICP= -100 μA, all
switches off at
Qxn
11
-
20
V
VS=13.5 V
20
-
35
V
VS=20 V
30
-
40
V
Table 12.
Outputs: Qxn (x = A; B n =1; 2)
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
RDSON HS On-resistance Qxn to VS
VS = 13.5 V, Tj = 25 °C,
IQxn = -1.0 A
-
500
700
m
Ω
VS = 13.5 V, Tj = 125 °C,
IQxn = -1.0 A
-
750
1000
m
Ω
VS = 7.0 V, Tj = 25 °C,
IQxn = -1.0 A
-
550
750
m
Ω
RDSON LS
On-resistance Qxn to
PGND
VS = 13.5 V, Tj = 25 °C,
IQxn = + 1.0 A
-
500
700
m
Ω
VS = 13.5 V, Tj = 125 °C,
IQxn = + 1.0 A
-
750
1000
m
Ω
VS = 7.0 V, Tj = 25 °C,
IQxn = + 1.0 A
-
550
750
m
Ω
|IQxnOC |
Output overcurrent
limitation to VS or PGND
test mode exclusive of filter
time 4s (Chapter 2.10)
1.6
2
-
A
IQxnFS_HS
Value of output current to
supply VS (so called full
scale value)1 sourcing
from HS switch
Bits: DC2 DC1 DC0=000
60
95
130
mA
Bits: DC2 DC1 DC0=001
100
140
180
Bits: DC2 DC1 DC0=010
180
230
280
Bits: DC2 DC1 DC0=011
300
360
420
Bits: DC2 DC1 DC0=100
485
550
615
Bits: DC2 DC1 DC0=101
720
810
900
Bits: DC2 DC1 DC0=110
1000
1150
1300
Bits: DC2 DC1 DC0=111
1200
1350
1500
IQxnLIM_HS
Accuracy of micro steps
current limit
-MIN(1)
-MAX(1)
mA
1.
MIN= 0.92 IQxnLIM – 0.02 |IQxnFS_HS |; MAX= 1.08 IQxnLIM + 0.02 |IQxnFS_HS |
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