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FAN8702/FAN8702B/FAN8702MP
6 Channel DSC Motor Driver
Features
* * * * * * * * * * 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. Low Voltage operation. Built in Reference Voltage. Built in Thermal Shut Down.
Description
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 shutter, auto-focus, iris and zoom motor drive.
48-LQFP-0707
48MLP7X7
Typical Applications
* DSC * Mobile Phone Camera
Ordering Information
Device FAN8702MP FAN8702MPX FAN8702 FAN8702B Package 48MLP 7X7 48MLP 7X7 48-LQFP-0707 48-LQFP-0707 Operating Temp. -20C to +80C -20C to +80C -20C to +80C -20C to +80C
Notes X : Tape & Reel
Rev.1.0.3
(c)2004 Fairchild Semiconductor Corporation
FAN8702/FAN8702B/FAN8702MP
Pin Assignments
36
OUT2
35
34
33
OUT9
32
RFG1
31
30
29
28
27
26
OUT6
25
OUT7 OUT8
OUT3 OUT4
OUT10 OUT11
RFG2 OUT12 OUT5
37 38 39 40 41 42 43 44 45 46 47 48
OUT1
24 23 22 21 20 19 18 17 16 15 14 13
PG
PG
NC
NC VB2
VB1
VCC1
VCC2 NC
VREF
VC1 VC2 ISH
FAN8702
FC1
FC2 VDD
IAE NC NC IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11
NC SG INHD IN12
1
2
3
4
5
6
7
8
9
10
11
11
12
36
OUT7
35
34
33
32
31
30
29
RFG1
28
27
26
OUT3
25
OUT2 OUT1
OUT6 OUT5
OUT12 RFG2
OUT11 OUT10
OUT9 OUT4
37 38 39 40 41 42 43 44 45 46 47 48
OUT8 PG
24 23 22 21 20 19 18 17 16 15 14 13
PG
NC
NC
VB2
VB1
VCC2
VCC1
NC
VREF
FC1 FC2
VC1
VC2 ISH
VDD
NC SG INHD IN12 IN11 IN10 IN9
IAE NC
8702MP
IN8 IN7 IN6 IN5 IN4 IN3 IN2 IN1
NC
1
2
3
4
5
6
7
8
9
10
11
11
12
2
FAN8702/FAN8702B/FAN8702MP
Pin Definitions
Pin Number FAN8702/B 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 34 35 36 37 38 39 40 FAN8702MP 12 11 10 9 8 7 6 5 4 3 2 1 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 Pin Name IN 1 IN 2 IN 3 IN 4 IN 5 IN 6 IN 7 IN 8 IN 9 IN 10 IN 11 IN 12 INHD SG NC VDD FC2 FC1 NC VCC2 VB2 NC PG OUT8 OUT7 OUT6 OUT5 OUT12 RFG2 OUT11 OUT10 RFG1 OUT9 OUT4 OUT3 OUT2 OUT1 PG NC VB1 I/O I I I I I I I I I I I I I P P A A P P P A A A A A A A A A A A A P P Pin Function Description Logic Input 1 Logic Input 2 Logic Input 3 Logic Input 4 Logic Input 5 Logic Input 6 Logic Input 7 Logic Input 8 Logic Input 9 Logic Input 10 Logic Input 11 Logic Input 12 Voltage Adjust for Vref Signal Ground Non Connection Supply Voltage (Logic Voltage) Compensation 2 Compensation 1 Non Connection Supply Voltage (Current Drive2) Supply Voltage (Voltage Drive2) Non Connection Power Ground 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 Non Connection Supply Voltage (Voltage Drive1) Remark -
3
FAN8702/FAN8702B/FAN8702MP
Pin Definitions
Pin Number Pin Number 41 42 43 44 45 46 47 48
(Continued)
Pin Number 20 19 18 17 16 15 14 13
Pin Name VCC1 VREF VC1 VC2 ISH IAE NC NC
I/O P A A A A -
Pin Function Description 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) Voltage Adjust for IRIS(Out11~12) Non Connection Non Connection
Remark -
4
FAN8702/FAN8702B/FAN8702MP
Internal Block Diagram
OUT1
OUT2 VB1
OUT3
OUT4
OUT9
OUT10 VCC1
OUT5
OUT6 VB2
OUT7
OUT8
VCC1 VCC2 VB1
VDD
SGND
Constant voltage H-bridge CH1
PGND
Constant voltage H-bridge CH2
Constant current H-bridge CH5
Constant voltage H-bridge CH3
PGND
Constant voltage H-bridge CH4
VB2
PG
VREF
Reference out
5X
CH1,CH2
VC1
FC1 Quick Charge
FC1 RFG1
FC2 VC2
CH3,CH4
CH5 CH6
VCC2
5X
ISH
Constant current
OUT11
H-bridge CH6
OUT12
IAE
RFG2
Reference Control
CH1~CH6 Control Output stage
Logic
INHD IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 IN12
TSD
NC
5
FAN8702/FAN8702B/FAN8702MP
Equivalent Circuits
IN1 ~ IN 12 , INHD Input VC1 , VC2
VDD
VB1 VB2
80K
60K 60K 44
1 5 9 13
2 6
3 7
4 8
70K 80K
43
10 11 12
ISH , IAE
FC1 , FC2
VCC1
VCC2
VCC1
VCC2
10K 45 46
10K
5K 18 17 5K
RFG1 , RFG2
VREF
VCC1
VCC2
VDD
32
29 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
36 34
27 25
26 24
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 = 25C)
Parameter Maximum Power Supply Voltage Maximum Power Supply Voltage Maximum Approval Voltage To Input Pin Maximum Approval Voltage To Output Pin Maximum Output Current Maximum Power Dissipation Symbol VBMAX VCCMAX VINMAX VOUTMAX IOUTMAX PdMAX TOPR TSTG Value 10.5 10.5 10.5 11.5 600 1000 (FAN8702/B) 1200 (FAN8702MP) 2500 (FAN8702MP) Operating Temperature Storage Temperature -20 ~ +80 -55 ~ +150
Case1 Case1 Case2
Unit V V V V mA mW C C
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 x 114mm x 1.6mm. 3. Case 2: Multi layer PCB with 1 signal, 1 power and 1 ground planes, PCB size 76mm x 114mm x 1.6mm, Cu plane sizes for power and ground 74mm x 74mm x 0.035mm, thermal via hole pitch 0.9mm, via hole size 0.3mm, 6 via hole. 4. Should not exceed PD or ASO value.
Power Dissipation Curve
Power dissipation (W)
FAN8702 FAN8702B
1.0
Ambient temperature, Ta ( C) 25 150
Pd [mW] 3,000 2,000 case2
FAN8702MP
SOA
1,000 0 0 25
case1
50
75
100
125
150
175 Ambient Temperature, Ta [C]
8
FAN8702/FAN8702B/FAN8702MP
Recommended Operating Conditions (Ta = 25C)
Parameter Operating Voltage Range Operating Voltage Range Logic Input High Level Logic Input Low Level Symbol VB1,2 VCC1,2 VINH VINL Min. 2.2 2.2 1.8 -0.3 Typ. Max. 6.5 6.5 7.0 0.4 Unit V V V V
9
FAN8702/FAN8702B/FAN8702MP
Electrical Characteristics
(Ta = 25C, VB1=VB2=VCC1=VCC2=VDD=2.4V) Block Parameter Stand-by Current Operating Consumption Current 1 Operating Consumption Current 2 Operating Consumption Current 3 Total Operating Consumption Current 4 Operating Consumption Current 5 Reference Voltage Output Voltage 1 Reference Voltage Output Voltage 2 Logic Input High Current Logic Input Low Current Thermal Shutdown Current driver Output Saturation Voltage (PNP+NPN) Voltage driver Output Voltage 1 Output Saturation Voltage (PNP+NPN) Output Current 1 Symbol ISTB ICC1 ICC2 ICC3 ICC4 ICC5 VREF1 VREF2 IINH IINL THD IO VSAT1 VO VSAT2 Conditions VB=VCC=VDD=7.0V IN1~,IN8 (1Phase) IOV=200mA, Note1 IN1~IN8(2Phase) IOV=400mA, Note1 IN5~IN8(Brake) Note2 IN9~IN12(1 phase) IOI=200mA, Note1 IN11,IN12(Brake)Note2 IREF=-1mA,INHD=L IREF=-1mA,INHD=H VIN=5.0V VIN=0.0V RFG=1.0, ISH=0.3V IO=0.3A VC1, 2 =0.4V IO=0.2A Min. 0.95 0.64 -1 282 1.9 Typ. 8 17 16 6 16 1.0 0.67 60 150 300 0.4 2.0 0.35 Max. 1.0 11 25 25 11 25 1.05 0.70 90 1 318 0.6 2.1 0.50 Unit A mA mA mA mA mA V V A A
C
mA V V V
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/ Output IN Mo1 tor Operation Stan d-by IN 2 IN 3 IN 4 IN 5 IN 6 IN 7 IN 8 IN 9 IN 10 IN 11 IN 12 OUT 1 OT 2 OU OUT OUT OUT OUT OUT OUT OUT OUT OUT T3 4 5 6 7 8 9 10 11 12
INHD
Vref
L L
LLL LLL
L L
L L
L L
L L
L L
L L
L L
L L
L H L H
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
0.67 1.0 0.67
When one of input of IN1 to IN12 is high L L
Z L H Z LL LH HL HH L L LH HL
Z H L Z Z L H Z Z H L Z Z L H L Z H L L Z L H L Z H L L Z L H FAN8702 only FAN8702B and FAN8702MP Z Z H L Z Z L H L Z H L L
LH HL
Volt age driver 1
HH
Volt age driver 2
HH L L H L H L L L H L H L L H L H
HH L H H
Curr ent driver 2
Curr ent driver 1
Inhibit
L H H
11
FAN8702/FAN8702B/FAN8702MP
Application Information
1. Current Drive Output Current Setting
VCC1 VCC2 VREF Reference Out H-BRIDGE 5,6
OUT_A M OUT_B
ISH / IAE
IN9~12 RW FC RFG RS
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 0.05 .
Motor Current = ISH or IAE Input Voltage ----------------------------------------------------------------RS + RW
2. Current Drive Block1(CH5)
VCC1 VREF ISH H-BRIDGE5 OUT10 SH Reference Out
OUT9
IN9~10
Quick Charge Ciruit
Rw FC1 RFG1 Rs
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
1sec over
500us
IN9 IN10 Motor current
Output Delay Time
Output Delay Time
FC1
Quick charge Time discharge Time
discharge Time
3. Current Drive block2(CH6)
VCC2 VREF IAE H-BRIDGE6 Brake function IN11~12 FC2 Rw RFG2 Rs OUT12 M Reference Out
OUT11
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.
1sec over
500us
IN11 IN12 Motor current
Output Delay Time
Output Delay Time
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 VC1 / VC2 Reference Out H-BRIDGE 1,2,3,4 4R IN1~IN8 R OUT_B
OUT_A M
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 H-BRIDGE 5,6
OUT_A M OUT_B
ISH / IAE
IN9~IN12 RW FC RFG
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 VC1/ VC2 Reference Out H-BRIDGE 1,2,3,4 4R IN1~IN8 R OUT_B
OUT_A M
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 Auto-focus Shutter
STEP M Multi iris
OUT5 OUT6 VB2 OUT7 OUT8 VCC1 VCC2 VB1
OUT1
OUT2 VB1
OUT3
OUT4
OUT9
OUT10 VCC1
VDD
SGND
Constant voltage H-bridge CH1
PGND
Constant voltage H-bridge CH2
Constant current H-bridge CH5
Constant voltage H-bridge CH3
PGND
Constant voltage H-bridge CH4
VB2
PG
VREF
Reference out
CH1,CH2
VC1
FC1 Quick Charge
CH5 CH6
FC1 RFG1
5X
FC2 VC2
CH3,CH4
VCC2 OUT11
5X
ISH
Constant current
Zoom
OUT12 RFG2
H-bridge CH6
DC M
IAE
Reference Control
CH1~CH6 Control Output stage
Logic
INHD IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 IN12
TSD
NC
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)
** This design for : ** dia 0.15mm, depth is max0.15mm Viais ** ** RECOMMENDED SCREEN MASK THICKNESS** 100~130um RECOMMENDED SCREEN MASK THICKNESS** 100~130um :RECOMMENDED SCREEN MASK THICKNESS : 100~1 :RECOMMENDED SCREEN MASK THICKNESS : 100~1
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.
www.fairchildsemi.com 8/26/04 0.0m 001 Stock#DSxxxxxxxx (c) 2003 Fairchild Semiconductor Corporation
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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