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Part: FAN8729
Category:
Description: BLDC + 4CH BTL Driver
Company: Fairchild Semiconductor
Datasheet: Download FAN8729 datasheet File size : 400 kB
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FAN8729
Spindle+4-CH Motor Drive IC
Features
· · · · · · · · · · Built-in Power Save Circuit Built-in Current Limit Circuit Built-in Thermal Shutdown Circuit (TSD) Built-in TSD Monitor Circuit Built-in FG Signal Output Circuit Built-in Rotational Direction Detecting Circuit Built-in Protection Circuit For Reverse Rotation Built-in 4-CH Balanced Transformerless (BTL) Driver Built-in BTL MUTE Circuit (CH123 and CH4) Corresponds to 3.3V DSP
Description
The FAN8729 is a monolithic integrated circuit built-in 4Channel BTL motor and spindle motor drivers, which can drive tracking actuator, focus actuator, sled motor, loading motor, 3-phase BLDC motor, and it is applicable to DVD-P/ MDP/CAR-MD/CAR-NAVIGATION systems.
4 8 - Q F P H - 1 4 14
Typical Application
· · · · Mini Disk Player Digital Video Disk Player Car Mini Disk Player Car navigation System
Ordering Information
Device FAN8729 FAN8729_NL*
note
Pack age 48-QFPH-1414 48-QFPH-1414
Operating Temperature -35°C ~ +85°C -35°C ~ +85°C
*Note: NL: Lead free Type
Rev. 1.0.0
©2003Fairchild Semiconductor Corporation
FAN8729
Pin Assignments
MUTE123
VREF123
MUTE4
SVCC2
INS+
INS-
OUTS
VM3
PC1
48 H 1+ 1
47
46
45
44
43
42
41
40
39
VM4
38
37 36 NC
H 1-
2
VREF4 35
SS
DO 4-
H2+
3
34
DO 4+
H 2-
4
33
DO 3-
H3+
5
32
DO 3+
H3-
6
31
PGND2
FA N 8729
FG 7 30 DO 2D IR 8 29 DO2+ SV C C 1 9 28 DO1-
VM1
10
27
DO 1+
CS1
11
26
OPO UT
PGND1
12 13 A3 14 A2 15 A1 16 SGND 17 NC 18 TSD_M 19 IN4 20 IN3 21 IN2 22 IN1 23 VM2 24 OPIN+
25
O P IN-
2
FAN8729
Pin Definitions
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Pin Name H 1+ H1H 2+ H2H 3+ H3FG DIR SVCC1 VM1 CS1 PGND1 A3 A2 A1 SGND NC TSD_M IN4 IN3 IN2 IN1 VM2 OPIN+ OPINOPOUT DO1+ DO1DO2+ DO2PGND2 DO3+ DO3I/O I I I I I I O O I O O O O I I I I I I O O O O O O O Hall1(+) Input Hall1(-) Input Hall2(+) Input Hall2(-) Input Hall3(+) Input Hall3(-) Input FG Output Direction Signal VCC1 BLDC Motor Power Supply Current Sensor Power Ground1 3-Phase Output 3 3-Phase Output 2 3-Phase Output 1 Signal Ground NC TSD Monitor CH4 Input CH3 Input CH2 Input CH1 Input BTL CH1,2 Supply Voltage Normal OP-AMP Input(+) Normal OP-AMP Input(-) Normal OP-AMP Output BTL Drive 1 Output(+) BTL Drive 1 Output(-) BTL Drive 2 Output(+) BTL Drive 2 Output(-) BTL Power Ground2 BTL Drive 3 Output(+) BTL Drive 3 Output(-) Pin Function Description
3
FAN8729
Pin Definitions (Continued)
Pin Number 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Pin Name DO4+ DO4NC VREF4 VM4 VM3 SVCC2 VREF123 MUTE123 MUTE4 SS OUTS INSINS+ PC1 I/O O O I I I I I O I I I Pin Function Description BTL Drive 4 Output(+) BTL Drive 4 Output(-) NC BTL CH4 Reference BTL CH4 Motor Supply BTL CH3 Motor Supply BTL Signal VCC BTL CH1,2,3 Reference BTL CH1,2,3 Mute BTL CH4 Mute Spindle Start/Stop OP-AMP Spindle Output OP-AMP Spindle Input(-) OP-AMP Spindle Input(+) Phase Compesation Cap.
4
FAN8729
Internal Block Diagram
MUTE123
FIN(GND)
MUTE4
VREF123
SVCC2
INS+
INS-
OUTS
PC1
48
47
46
45
44
43
42
41
40
VM3
SS
39
VM4
38
VREF4
37
H1+ H1H2+ H2H3+ H3-
1
36
NC
2
35
DO4-
EC
ECR
VM4
Hall Amp
3
23.5dB
5K
34
DO4+
4
Absolute Values
VM1 CS1
20K VM3
33
DO3DO3+
5
Current Sense Amp Output Current Limit
5K 20K
23.5dB
32
6
31
PGND2
FG1X Generator
Detection FIN(GND) Logic
VM2
FIN(GND)
FG DIR
7
Reverse Rotation
10K 20K VM2
17.5dB
30
DO2-
8
29
DO2+
SVCC1 VM1
9
17.5dB
28
DO1DO1+
Distributor
10
10K 20K
27
CS1
11
26
OPOUT
PGND1
12
Driver
TSD_M
25
OPIN-
13
14
15
16
17
18
19
20
21
22
23
24
TSD_M
5
FIN(GND)
OPIN+
IN4
SGND
IN3
IN2
IN1
A1
NC
VM2
A3
A2
Others parts begin by fa
FA-1 FA-2 FA-3 FA-4 FA-5 FA-6 FA-7 FA-8 FA-9 FA-10 FA-11 FA-12 FA-13 FA-14 FA-15 FA-16 FA-17
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