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: 37/40页
文件大小: 639K
代理商: L9942XP1TR
Block diagram and pin information
L9942
Doc ID 11778 Rev 6
1
Block diagram and pin information
Figure 1.
Block diagram
Figure 2.
Pin connection (top view)
Gate-Driver
&
PWM-Controller
S
P
I
+
R
egi
st
er
+
Logi
c
P
has
e
Count
e
r+
Current
P
rof
ile
P
W
M
C
u
rrent
D
A
C
Diagnostic
Charge
Pump
U/I-
Converter
VCC
VBAT
ReversePolarityProtection
CSN
CLK
DI
DO
EN
STEP
μ
C
Oscillator
Biasing
VS
GND
Note: value of capacitor has
to be choosen carefully to
limit the VS voltage below
absolute maximum ratings in
case
of
an
unexpected
freewheeling
condition (e.g.
TSD, POR)
Stepper
Motor
QA1
QA2
QB1
QB2
Gate-Driver
&
PWM-Controller
RREF
Diagnostic
CP
PWM
GNDP
QB2
GND
All pins with the same name must be externally connected!
All pins PGND are internally connected to the heat slug.
PGND
1
QA1
2
VS
3
4
DI
5
CSN
6
DO
7
8
STEP 9
VS 10
QB1 11
PGND 12
PWM
PGND
24
QA2
23
22
EN
21
RREF
20
VCC
19
TEST
18
17
CP
16
VS
15
QB2
14
PGND
13
GND
Power SSO24
Exposed
Pad
VS
CLK
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