OM9373SF 查看數據表（PDF） - International Rectifier
零件编号
产品描述 (功能)
生产厂家
OM9373SF
International Rectifier
OM9373SF Datasheet PDF : 14 Pages
| |||
OM9373
PHASE OUTPUTS (Phase A, Pins 41 and 42;
Phase B, Pins 36 and 37; Phase C, Pins 31 and 32)
These outputs are connected to either Vmotor via
the pull-up driver or Source via the pull-down driver,
depending upon the Hall-Effect and Direction Inputs
(see Commutation Truth Table). The two pins associated
with each Phase Output must be connected to one of the
three phases of the motor driven by the OM9373.
VMOTOR (Pins 33, 38, and 43) - These pins are
connected to the most positive terminal of the motor
supply (Vm+). For proper operation, all three pins
must be connected together externally with a low
impedance power bus. The Vmotor power bus
should be bypassed with an adequately voltage-
rated ceramic capacitor, 0.1µF (typical), and a low-
ESR electrolytic capacitor, whose capacitance can
be selected by the following: 10µF-per-Ampere of
average motor current from Vmotor to Motor Return.
Note: All connections, including the power bus
capacitor connections, must be made as close as
possible to the Vmotor and Motor Return pins to
minimize parasitic effects.
Pin Designation
Pin No. Designation Pin No. Designation Pin No. Designation Pin No. Designation
1
VCC
12
ISH
23
Speed Input
34
Source B
2
EA1 "-" Input
13
ISL
24
Direction Input
35
Source B
3
EA2 "+" Input
14
Quad Select Input
25
CSH
36 Phase B Output
4
EA1 "+" Input
15 Tachometer Output 26
5 +5V Reference Output 16 Brake/Tach Timing Input 27
CSL
Motor Return
37 Phase B Output
38
Vmotor
6
EA2 "-" Input
17 Overvoltage/Coast Input 28
Motor Return
39
Source A
7
EA2 Output
18
Soft-Start Input
29
Source C
40
Source A
8
EA1 Output
19
Ground
30 ( No Connection) 41 Phase A Output
9
PWM Input
20
10 Oscillator Timing Input 21
11
Isense
22
H3 Input
H2 Input
H1 Input
31 Phase C Output 42 Phase A Output
32 Phase C Output 43
Vmotor
33
Vmotor
Case (No Connection)
12
www.irf.com
Share Link: