FAN8702B [FAIRCHILD]
6 Channel DSC Motor Driver; 6通道DSC电机驱动器
| 型号： | FAN8702B |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | 6 Channel DSC Motor Driver |
| 文件： | 总20页 (文件大小：358K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
FAN8702/FAN8702B/FAN8702MP
6 Channel DSC Motor Driver
Features
Description
• Independent 6-Channel H-Bridge.
• Output Current up to 600mA (Each Channel)
• Constant Current Control on CH5 and CH6.
• Constant Voltage Control on CH1,2,3 and CH4.
• Built in Brake Function on CH3,4 and CH6.
• Built in Short Through Protection.
• Low Saturation Voltage.
The FAN8702 is designed for portable equipment such as
DSC and mobile phone camera. It consists of 2 constant
current and 4 constant voltage drive blocks suitable for shut-
ter, auto-focus, iris and zoom motor drive.
48-LQFP-0707
• Low Voltage operation.
• Built in Reference Voltage.
• Built in Thermal Shut Down.
48MLP7X7
Typical Applications
Ordering Information
• DSC
• Mobile Phone Camera
Device
FAN8702MP
FAN8702MPX
FAN8702
Package
48MLP 7X7
48MLP 7X7
48-LQFP-0707
48-LQFP-0707
Operating Temp.
-20°C to +80°C
-20°C to +80°C
-20°C to +80°C
-20°C to +80°C
FAN8702B
Notes
X : Tape & Reel
Rev.1.0.3
©2004 Fairchild Semiconductor Corporation
FAN8702/FAN8702B/FAN8702MP
Pin Assignments
36 35 34
33 32
31
30
29
28 27
26 25
OUT2 OUT3 OUT4 OUT9 RFG1 OUT10 OUT11 RFG2 OUT12 OUT5 OUT6
OUT7
OUT8
OUT1
24
23
37
38
PG
PG
NC
NC
22
21
39
40
VB2
VB1
VCC2 20
41 VCC1
42 VREF
43 VC1
NC
19
FAN8702
FC1
18
VC2
FC2
44
17
ISH
VDD
45
16
NC 15
IAE
46
SG
NC
NC
14
47
48
INHD
13
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
IN9
IN10
IN11
IN12
1
2
3
4
5
6
8
9
10
11 12
7
36 35 34
33 32
31
30
29
28 27
26 25
OUT7 OUT6 OUT5 OUT12 RFG2 OUT11 OUT10 RFG1 OUT9 OUT4 OUT3
OUT2
OUT1
37 OUT8
24
PG
PG 23
38
NC
NC
22
39
VB1 21
VCC1 20
VREF 19
VB2
40
VCC2
41
42 NC
VC1
FC1
18
43
44
FC2
VC2 17
ISH
16
45 VDD
IAE 15
NC
46
NC
SG
14
47
48
INHD
NC
13
8702MP
IN12 IN11
IN10
IN9
IN8
IN7
IN6
IN5
IN4
IN3
IN2
IN1
1
2
3
4
5
6
8
9
10
11 12
7
2
FAN8702/FAN8702B/FAN8702MP
Pin Definitions
Pin Number
Pin Name
I/O
Pin Function Description
Remark
FAN8702/B
1
FAN8702MP
12
11
10
9
IN 1
IN 2
I
I
Logic Input 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2
Logic Input 2
3
IN 3
I
Logic Input 3
4
IN 4
I
Logic Input 4
5
8
IN 5
I
Logic Input 5
6
7
IN 6
I
Logic Input 6
7
6
IN 7
I
Logic Input 7
8
5
IN 8
I
Logic Input 8
9
4
IN 9
I
Logic Input 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
34
35
36
37
38
39
40
3
IN 10
IN 11
IN 12
INHD
SG
I
Logic Input 10
2
I
Logic Input 11
1
I
Logic Input 12
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
I
Voltage Adjust for Vref
Signal Ground
P
-
NC
Non Connection
VDD
FC2
P
A
A
-
Supply Voltage (Logic Voltage)
Compensation 2
FC1
Compensation 1
NC
Non Connection
VCC2
VB2
P
P
-
Supply Voltage (Current Drive2)
Supply Voltage (Voltage Drive2)
Non Connection
NC
PG
P
A
A
A
A
A
A
A
A
A
A
A
A
A
A
P
-
Power Ground
OUT8
OUT7
OUT6
OUT5
OUT12
RFG2
OUT11
OUT10
RFG1
OUT9
OUT4
OUT3
OUT2
OUT1
PG
Voltage Driver OUT8
Voltage Driver OUT7
Voltage Driver OUT6
Voltage Driver OUT5
Current Driver OUT12
Current Sensing2
Current Driver OUT11
Current Driver OUT10
Current Sensing1
Current Driver OUT9
Voltage Driver OUT4
Voltage Driver OUT3
Voltage Driver OUT2
Voltage Driver OUT1
Power Ground
NC
Non Connection
VB1
P
Supply Voltage (Voltage Drive1)
3
FAN8702/FAN8702B/FAN8702MP
Pin Definitions (Continued)
Pin Number
Pin Name
I/O
Pin Function Description
Remark
Pin Number
Pin Number
41
42
43
44
45
20
19
18
17
16
VCC1
VREF
VC1
VC2
ISH
P
A
A
A
A
Supply Voltage (Current Drive1)
Reference Voltage Out
-
-
-
-
-
Voltage Adjust for Out 1~4
Voltage Adjust for Out 5~8
Voltage Adjust for
Shutter(Out9~10)
46
47
48
15
14
13
IAE
NC
NC
A
-
Voltage Adjust for IRIS(Out11~12)
Non Connection
-
-
-
-
Non Connection
4
FAN8702/FAN8702B/FAN8702MP
Internal Block Diagram
OUT1
OUT2
OUT3
OUT4
OUT10
VCC1
OUT5
OUT6
VCC1
VCC2
VB1
OUT9
OUT7
OUT8
VB2
VB1
VDD
Constant
current
H-bridge
CH5
Constant
voltage
H-bridge
CH1
Constant
voltage
H-bridge
CH2
Constant
voltage
H-bridge
CH3
Constant
voltage
H-bridge
CH4
VB2
SGND
PG
PGND
PGND
VREF
FC1
FC1
Quick Charge
Reference out
RFG1
VC1
VC2
CH1,CH2
5X
FC2
CH5
VCC2
CH3,CH4
5X
OUT11
Constant
current
H-bridge
CH6
CH6
ISH
IAE
OUT12
RFG2
CH1~CH6 Control
Reference Control
Output stage
TSD
Logic
NC
INHD
IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 IN12
5
FAN8702/FAN8702B/FAN8702MP
Equivalent Circuits
IN1 ~ IN 12 , INHD Input
VC1 , VC2
VDD
VB1
VB2
80K
60K
60K
43
44
1
5
2
3
4
70K
6
7
8
9
10 11 12
80K
13
ISH , IAE
FC1 , FC2
VCC1
VCC2
VCC1
VCC2
10K
10K
45
46
5K
5K
18
17
RFG1 , RFG2
VREF
VDD
VCC1
VCC2
32
29
42
10K
Notes: Reference of pin number is 48-LQFP-0707
6
FAN8702/FAN8702B/FAN8702MP
Equivalent Circuits (Continued)
Out1~Out4
Out5~Out8
VB1
VB2
37 35
34
27 25
24
26
36
Out9~Out10
Out11~Out12
VCC1
VCC2
33
31
30
28
Notes: Reference of pin number is 48-LQFP-0707
7
FAN8702/FAN8702B/FAN8702MP
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Symbol
Value
Unit
V
Maximum Power Supply Voltage
Maximum Power Supply Voltage
Maximum Approval Voltage To Input Pin
Maximum Approval Voltage To Output Pin
Maximum Output Current
VBMAX
VCCMAX
VINMAX
10.5
10.5
10.5
V
V
VOUTMAX
IOUTMAX
11.5
V
600
mA
1000 (FAN8702/B) Case1
1200 (FAN8702MP) Case1
2500 (FAN8702MP) Case2
-20 ~ +80
Maximum Power Dissipation
mW
PdMAX
Operating Temperature
Storage Temperature
TOPR
TSTG
°C
°C
-55 ~ +150
Note:
1. Refer: EIA/JESD 51-2 & EIA/JESD 51-3 & EIA/JESD 51-5 & EIA/JESD 51-7
2. Case 1: Single layer PCB with 1 signal plane only, PCB size 76mm ´ 114mm ´ 1.6mm.
3. Case 2: Multi layer PCB with 1 signal, 1 power and 1 ground planes, PCB size 76mm ´ 114mm ´ 1.6mm, Cu plane sizes for
power and ground 74mm ´ 74mm ´ 0.035mm, thermal via hole pitch 0.9mm, via hole f size 0.3mm, 6 via hole.
4. Should not exceed P or ASO value.
D
Power Dissipation Curve
Power dissipation (W)
FAN8702
1.0
FAN8702B
Ambient temperature, Ta ( °C)
25
150
Pd [mW]
3,000
case2
2,000
case1
SOA
FAN8702MP
1,000
0
0
25
50
75
100
125
150
175
Ambient Temperature, Ta [°C]
8
FAN8702/FAN8702B/FAN8702MP
Recommended Operating Conditions (Ta = 25°C)
Parameter
Symbol
VB1,2
VCC1,2
VINH
Min.
2.2
Typ.
Max.
6.5
Unit
V
Operating Voltage Range
Operating Voltage Range
Logic Input High Level
Logic Input Low Level
-
-
-
-
2.2
6.5
V
1.8
7.0
V
VINL
-0.3
0.4
V
9
FAN8702/FAN8702B/FAN8702MP
Electrical Characteristics
(Ta = 25°C, VB1=VB2=VCC1=VCC2=VDD=2.4V)
Block
Parameter
Stand-by Current
Symbol
Conditions
Min. Typ. Max. Unit
ISTB
VB=VCC=VDD=7.0V
-
-
-
1.0
11
mA
IN1~,IN8 (1Phase)
IOV=200mA, Note1
Operating Consumption Current 1
ICC1
8
mA
IN1~IN8(2Phase)
IOV=400mA, Note1
Operating Consumption Current 2
Operating Consumption Current 3
Operating Consumption Current 4
ICC2
ICC3
ICC4
ICC5
-
-
-
17
16
6
25
25
11
mA
mA
mA
IN5~IN8(Brake) Note2
IN9~IN12(1 phase)
IOI=200mA, Note1
Total
Operating Consumption Current 5
Reference Voltage Output Voltage 1
Reference Voltage Output Voltage 2
Logic Input High Current
IN11,IN12(Brake)Note2
-
16
25
mA
V
VREF1 IREF=- 1mA,INHD=L
VREF2 IREF=- 1mA,INHD=H
0.95
1.0
1.05
0.64 0.67 0.70
V
IINH
IINL
THD
VIN=5.0V
VIN=0.0V
-
-1
-
60
-
90
1
mA
mA
°C
Logic Input Low Current
Thermal Shutdown
-
150
-
RFG=1.0W,
ISH=0.3V
Output Current 1
IO
282
300
318 mA
Current
driver
Output Saturation Voltage
(PNP+NPN)
VSAT1 IO=0.3A
-
1.9
-
0.4
2.0
0.6
2.1
V
V
V
Output Voltage 1
VO
VC1, 2 =0.4V
Voltage
driver
Output Saturation Voltage
(PNP+NPN)
VSAT2 IO=0.2A
0.35 0.50
Note :
1. ICC1, ICC2,ICC4 is sum of the current consumption VB1,VB2,VCC1,VCC2 line.
2. ICC3, ICC5 is sum of the current consumption VB1,VB2,VCC1,VCC2 and VDD line.
10
FAN8702/FAN8702B/FAN8702MP
Operation Truth Table
Input/
Out-
put
Mo-
tor
IN IN IN IN
IN IN IN IN IN
IN
10
IN
11
IN
12
OUT OT OU OUT OUT OUT OUT OUT OUT OUT OUT OUT
Vref
INHD
1
2
3
4
5
6
7
8
9
1
2
T3
4
5
6
7
8
9
10
11
12
Oper-
ation
Stan
d-by
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
0.67
1.0
H
L
When one of input of IN1 to IN12 is high
0.67
H
L
L
L
H
L
Z
L
Z
H
L
H
H
Z
Volt
age
H H
Z
dri-
ver 1
L
L
Z
L
Z
H
L
L H
H L
H H
H
Z
Z
L
L
L
H
L
Z
L
Z
H
L
H
H
L
Volt
age
H H
L
dri-
ver 2
L
L
L
H
L
Z
L
Z
H
L
L
H
H
H
L
H
L
L
L
H
L
Z
L
Z
H
L
Curr
ent
H
H
dri-
ver 1
FAN8702 only
FAN8702B and FAN8702MP
Inhibit
H
H
Z
Z
L
L
L
H
L
Z
L
Z
H
L
L
Curr
ent
dri-
ver 2
H
H
H
L
H
11
FAN8702/FAN8702B/FAN8702MP
Application Information
1. Current Drive Output Current Setting
VCC1 VCC2
VREF
Reference
Out
OUT_A
H-BRIDGE
5,6
M
ISH / IAE
IN9~12
OUT_B
RW
RFG
RS
FC
Motor current is determined by ISH/IAE voltage and Rs sensing resistance and calculated by the formula below considering
Rw. Generally internal bonding and metal resistance Rw is around 0.05W .
ISH or IAE Input Voltage
Motor Current = -----------------------------------------------------------------
RS + RW
2. Current Drive Block1(CH5)
VCC1
VREF
ISH
Reference
Out
OUT9
SH
H-BRIDGE5
OUT10
Quick Charge
Ciruit
IN9~10
Rw
FC1
RFG1
R s
If there is no capacitor on the exterior of the FC terminal or low capacitance is used, it may cause oscillation or overshoot at
output terminal. The output stage will not be operating until FC1 terminal voltage reaches around 0.7V (Typical)
The output response time depends on the FC1 capacitance and interval of Input signal. Generally, the quick charging time is
10us~20us. To minimize the delay time difference in the output response between high-speed shutter and bulb shutter a quick
charging circuit is built in.
12
FAN8702/FAN8702B/FAN8702MP
500us
1sec over
IN9
IN10
Output
Delay
Time
Output
Delay
Time
Motor
current
FC1
discharge
Time
discharge
Time
Quick
charge Time
3. Current Drive block2(CH6)
VCC2
VREF
Reference
Out
OUT11
M
IAE
H-BRIDGE6
Brake
function
OUT12
IN11~12
Rw
FC2
RFG2
Rs
The output response time depends on the FC2 capacitance and interval of Input signal because there is no FC quick charging
circuit in current drive2.
500us
1sec over
IN11
IN12
Output
Delay
Time
Output
Delay
Time
Motor
current
FC2
discharge
Time
discharge
Time
13
FAN8702/FAN8702B/FAN8702MP
4. Voltage Drive Block
The output voltage as much as 5 times the input voltage VC1,VC2 is produced in the range of motor power VB1/VB2.
If output oscillation occur during constant voltage drive, then 0.01uF~0.1uF capacitor should be installed on the both sides of
the output.
VB1 VB2
VREF
Reference
Out
OUT_A
OUT_B
VC1 /
VC2
H-BRIDGE
1,2,3,4
M
4R
R
IN1~IN8
5. H-Bridge Drive Mode
A H-bridge drive mode can be implemented using the current drive block or the voltage drive block.
1) H- bridge drive using current drive block
The current drive block using the H-bridge method can be operated with ISH/AE connected to VREF or supply input, with the
FC terminal open and sensing terminal connected to ground.
VCC1 VCC2
VREF
Reference
Out
OUT_A
H-BRIDGE
5,6
M
ISH / IAE
IN9~IN12
OUT_B
RW
RFG
FC
14
FAN8702/FAN8702B/FAN8702MP
2) H- bridge drive using voltage drive block
When VB1 and VB2 power is less than 5V, VC1/VC2 input should be connected to VREF or motor supply and VB1 and VB2
power is more than 5V, VC1/VC2 input should be connected to motor supply. In H-bridge drive mode, a capacitor to prevent
oscillation is not necessary on both sides of the output.
VB1 VB2
VREF
Reference
Out
OUT_A
OUT_B
VC1/
VC2
H-BRIDGE
1,2,3,4
M
4R
R
IN1~IN8
6. Short through protection
When a motor is driven, high/low side TR turn on simultaneously. This range may cause power to be shorted to ground
momentarily. To prevent a short through, output is generated with a 1.8us(typical) delay after a high input signal.
Delay Time
1.8us
IN1,3,5,7,9,11
IN2,4,6,8,10,12
OUT1,3,5,7,9,11
OUT2,4,6,8,10,12
Delay Time
1.8us
7. Brake function
The brake function is built in Ch3,4 and CH6 . Using the H/H signal on input, it is designed so that a short brake is operated on
output.
8. Power Supply
VB1,VB2,VCC1 and VCC2 are separated for motor power of FAN8702 and VDD is used for IC logic power.
VB1,VB2,VCC1 and VCC2 are correspond to H-bridge 1~2, H-bridge 3~4, H-bridge 5 and H-bridge6.
9. Thermal shutdown
When thermal shut down is activated, all the outputs become off except for VREF.
15
FAN8702/FAN8702B/FAN8702MP
Typical Application Circuits1
STEP
M
STEP
M
Shutter
Multi
iris
Auto-focus
OUT3
OUT4
OUT1
OUT2
OUT5
OUT6
VCC1
VCC2
VB1
OUT9
OUT10
VCC1
OUT7
OUT8
VB2
VB1
VDD
Constant
current
H-bridge
CH5
Constant
voltage
H-bridge
CH1
Constant
voltage
H-bridge
CH2
Constant
voltage
H-bridge
CH3
Constant
voltage
H-bridge
CH4
VB2
SGND
PG
PGND
PGND
VREF
FC1
FC1
Quick Charge
Reference out
RFG1
VC1
VC2
CH1,CH2
5X
FC2
CH5
VCC2
CH3,CH4
OUT11
5X
Constant
CH6
DC
M
current
H-bridge
CH6
Zoom
ISH
IAE
OUT12
RFG2
CH1~CH6 Control
Reference Control
Output stage
TSD
Logic
NC
INHD
IN1
IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 IN12
DSP
16
FAN8702/FAN8702B/FAN8702MP
Package Dimensions (Unit: mm)
48-LQFP-0707
17
FAN8702/FAN8702B/FAN8702MP
Package Dimensions (Unit: mm)
48MLP 7x7
18
FAN8702/FAN8702B/FAN8702MP
Recommended PCB Design for FAN8702MP(Unit: mm)
19
FAN8702/FAN8702B/FAN8702MP
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’ S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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