Datasheet

Block Diagram
22
26
25
2
QUAD SEL
RC-OSC
PWMIN
27
28
1
E/A OUT
E/A IN(+)
E/A IN (–)
OSC
S Q
R
S
QR
PWMCLOCK
24SSTART
3ISENSE
4ISENSE1
5ISENSE2
19VCC
23OV-COAST
6DIR
7SPEED-IN
2X
2.5 V 250 Ω
2.9 V
Q1
10µA
3.1 V
9 V
DIRECTION
LATCH
0.25 V
PWMCLOCK
8H1
9H2
L
QD
L
QD
L
QD
10H3
+5 V
+5 V
+5 V
EDGE
DETECT
ONE
SHOT
21RC-BRAKE
2k
1 V
DIR COAST CHOP QUAD
H2
H1
H3
BRAKE
DECODER
CROSS
CONDUCTION
PROTECTION
LATCHES
18 PUA
17 PUB
16 PUC
14 PDA
13 PDB
12 PDC
15 GND
20 TACH-OUT
11 PWR VCC
+5 V
VREF
5 V
REFERENCE
PWM
CLOCK
1.75 V
ABS VALUE
0.2 V
UC2625-EP
SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.com
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