Datasheet

 
SLUS318B – APRIL 1999 – REVISED JANUARY 2002
3
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block diagram
UDG–97173
17HALLC
8DIR_OUT
14PWM_NI
13PWM_I
16HALLB
SYNCH
11
OC_REF
9
SNS_I
3
4
1
5
22 CLOW
C_TACH
R_TACH
TACH_OU
T
GND
2 VREF
27 AHI
25 BHI
23 CHI
26
ALOW
10
SNS_NI
IOUT
7
6
12
CT
18COAST
21DIR_IN
15HALLA
19BRAKE
20QUAD
SENSE AMPLIFIER
OVERCURRENT
COMPARATOR
OSCILLATOR
DIRECTION
DETECTOR
EDGE
DETECTOR
28 VDD
ONE
SHOT
5 VOLT
REFERENCE
S
R
PWM LOGIC
24 BLOW
1.75V
DIRECTION
SELECT
HALL
DECODER
PWM
COMPARATOR
X5
S
R
RxC
Q
Q
Q
Q