SI9979 Vishay Siliconix, SI9979 Datasheet - Page 3

• Manufacturer Part Number: SI9979
• Description: 3-Phase Brushless DC Motor Controller
• Manufacturer: Vishay Siliconix

Notes
a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum.
b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
c. The reference voltage is not available for external use.
d. V
Notes:
FaxBack 408-970-5600, request 70012
www.siliconix.com
COMMUTATION TRUTH TABLE
SPECIFICATIONS
Protection
Low-Side Undervoltage Lockout
Low-Side Hysteresis
High-Side Undervoltage Lockout
Current Limit
Comparator Input Bias Current
Comparator Threshold Voltage
Common Mode Voltage
One Shot Pulse Width
IN
X
X
0
1
1
1
0
0
0
1
1
1
0
0
L
L
L
1
1
0
0
(60°Spacing)
CAP
A
Sensors
= (V+) + (V
IN
L. Any valid sensor combination
0
0
1
1
1
0
0
0
1
1
1
0
X
X
L
L
L
0
0
1
1
B
Parameter
IN
X
X
0
0
0
1
1
1
0
0
0
1
1
1
L
L
L
1
1
0
0
C
DD
)
IN
1
1
1
0
0
0
1
1
1
0
0
0
X
X
L
L
L
1
1
0
0
(60°Spacing)
A
Sensors
IN
X
X
0
0
1
1
1
0
0
0
1
1
1
0
L
L
L
1
1
0
0
B
Inputs
IN
1
0
0
0
1
1
1
0
0
0
1
1
X
X
L
L
L
1
1
0
0
C
Symbol
EN
UVLH
UVLL
1
1
1
1
1
1
1
1
1
1
1
1
0
0
1
1
1
1
1
1
1
V
V
V
I
t
CM
IB
TH
p
H
F/R
1
1
1
1
1
1
0
0
0
0
0
0
X
X
X
X
X
X
X
X
X
BRK
Unless Otherwise Specified
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
1
0
1
T
V+ = 20 to 40 V, I
T
A
A
R
R
= -40 to 85 C
T
= 0 to 70 C
T
Test Conditions
I
= 10 k, C
S
= 10 k, C
0
0
0
0
0
0
0
0
0
0
0
0
X
X
0
1
1
X
X
X
X
+
S
A, B, C
GT
1
1
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
T
A
T
X. Don’t care
= 0 V
= 0.001 F
Top Drive
= 0.01 F
DD
GT
= 0 mA
0
0
1
1
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
B
C Suffix
D Suffix
GT
0
0
0
0
1
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
C
Outputs
GB
0
0
0
1
1
0
1
1
0
0
0
0
0
1
1
1
0
0
1
0
1
Min
Bottom Drive
A
90
85
80
-5
0
8
a
GB
1
0
0
0
0
1
0
0
1
1
0
0
0
1
1
1
0
0
1
0
1
-40 C to 85 C
B
V
Limits
DD
Typ
12.2
100
100
100
GB
0.8
10
Vishay Siliconix
0
1
1
0
0
0
0
0
0
0
1
1
0
1
1
1
0
0
1
0
1
- 3.3
b
C
S-60752-Rev. D, 05-Apr-99
FAULT
1
1
1
1
1
1
1
1
1
1
1
1
0
0
1
0
0
0
0
0
0
Max
110
125
120
12
1
a
Si9979
Over I in BRK
Conditions
Power Down
Disable
Over I
Brake
Units
mV
V
V
A
s
3