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FAN8002D2
2-Channel Motor Drive
Features
* * * * * * * * * 2-Channel BTL driver with mute circuit Built-in 2-regulator Built-in 2-comparator Built-in thermal shutdown circuit Built-in mute circuit Built-in switch circuit Built-in OP-AMP circuit Operating supply voltage: 4.5~13.2V Corresponds to 3.6V DSP
Description
The FAN8002D is a monolithic integrated circuit, suitable for a 2-ch motor driver which drives the focus actuator, tracking actuator.
28-SSOPH-300
Ordering Information
Device FAN8002D2 FAN800D2TF Package 28-SSOPH-300 28-SSOPH-300 Operating Temperature -35C ~ 85C -35C ~ 85C
Rev. 1.0.1 Jul. 2000.
(c)2000 Fairchild Semiconductor International
FAN8002D2
Pin Assignments
REG2CONT RSTOUT
OPOUT
OPIN+
SVCC
MUTE
OPIN-
CRST
VREF
28
27
26
25
24
23
22
21
20
19
18
17
16
DO213 DO1-
15
FAN8002D2
1 COUT1
2 CIN1-
3 CIN1+
4 CIN2+
5 CIN2-
6 COUT2
7 RSTIN
8 SWOUT
9 PVCC1
10 REG1
11 REG2
12 PVCC2
14 DO1+
FIN (GND)
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 Pin Name COUT1 CIN1CIN1+ CIN2+ CIN2COUT2 RSTIN SWOUT PVCC1 REG1 REG2 PVCC2 DO1DO1+ DO2+ DO2PGND IN2 IN1 VREF REG2 CONT MUTE I/O O I I I I O I O O O O O O O I I I I I Comparator1 Output Comparator1 (-) Input Comparator1 (+) Input Comparator2 (+) Input Comparator2 (-) Input Comparator2 Output Reset Input Switch Output Power Supply1 (Reg,switch Part) Regulator1 Output Regulator2 Output Power Supply 2 ( Drive Power Output Part) Drive1 Output (-) Drive1 Output (+) Drive1 Output (+) Drive1 Output (-) Power Ground CH2 Drive Input CH1 Drive Input Reference Voltage Regulator2 On/off Control Drive Mute
Pin Function Description
2
Rev. 1.0.1 Jul. 2000.
DO2+
IN1
IN2
FIN (GND)
PGND
FAN8002D2
Pin Definitions (Continued)
Pin Number
23 24 25 26 27 28
Pin Name
RSTOUT CRST OPOUT OPIN OPIN + SVCC
I/O
O Reset Output Reset Capacitor Opamp Output Opamp Input Opamp Input +
Pin Function Description
Signal Supply (Comparator, Reset, Opamp Drive Pre-amp Part)
Block Diagram
REG2CONT
RSTOUT
OPOUT
OPIN+
SVCC
OPIN-
MUTE
PGND
CRST
VREF
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DRIVER Mute
REG2 Control + PVCC1 Switch + + +
+
TSD
-
I/V-Convertor VREG Comparator1 Comparator2 Regulator1 + Regulator2 + + + Pref + -
+
+
1 COUT1
2 CIN1-
3
4 CIN2+
5 CIN2-
6 COUT2
7 RSTIN
8
9 PVCC1
10 REG1
11 REG2
12 PVCC2
13 DO1-
CIN1+
FIN (GND)
Rev. 1.0.1 Jul. 2000.
SWOUT
DO1+
+
I/V-Convertor
14
DO2+
DO2-
IN1
IN2
FIN (GND)
-
-
+
-
3
FAN8002D2
Equivalent Circuits
Comparator Output Comparator Input
2.5k 23
1 6 2 4 3 5
1k 23
Reset Input & Reset Capacitor
Switch Output
10k 1k 65k
7
23
24 8
23
80k 30k
2k
30k
23
Regulator Output
Btl Driver Output
10k 1.7k 5k
10
11
13 15
14 16
20k
Vref & Btl Driver Input
Reg2 & Switch Control Input
14k
18 19
1k
20
21
23
14k
23
30k
50k
30k
50k
4
Rev. 1.0.1 Jul. 2000.
FAN8002D2
Equivalent Circuits (Continued)
Mute Input Reset Output
50k
22
23
23 23 50k 20k
Op-amp Output
Op-amp Input
25
27
8k 23 23
26
23
Absolute Maximum Ratings (Ta = 25 C)
Parameter Maximum supply voltage Power dissipation Operating temperature range Storage temperature range Symbol VCCmax Pd Topr Tstg Value 15 1.4
note
Unit V W C C
-35 ~ +85 -55 ~ +150
NOTE: 1. When mounted on a 76.2mm x 114mm x 1.57mm PCB (Phenolic resin material). 2. Power dissipation reduces 11.2mW/C for using above Ta = 25C 3. Do not exceed Pd and SOA(Safe operating area).
PD (temporary) Pd (mW) 2,000 1,200 400 0
SOA
0 25 50 85 100 125 150 175 Ambient Temperature, Ta (C)
Rev. 1.0.1 Jul. 2000.
5
FAN8002D2
Recommended Operating Conditions
Parameter Signal Supply Voltage Power Supply Voltage 1 Power Supply Voltage 2 Symbol SVCC PVCC1 PVCC2 Min. 4.5 4.5 4.0 Typ. Max. 13.2 SVCC SVCC Unit V V V
Electrical Characteristics
(Unless otherwise specified, Ta = 25 C, VCC = VM12 = VM3,4 = 5V,Vref=1.65V, Comparator out=Hi-Z) Parameter Quiescent Current 1 Quiescent Current 2 Quiescent Current 3 Quiescent Current 4 DRIVE PART Output Offset Voltage Maximum output voltage1 Maximum output voltage2 Closed loop voltage gain Mute on voltage Mute off voltage REGULATOR PART Maximum output current Regulator output voltage Load regulation Line regulation Regulator2 on voltage Regulator2 off voltage COMPARATOR PART Input offset voltage Input offset current Input bias current Common mode input voltage Output sink current Slew rate RESET PART Reset on voltage Reset hysteresis voltage Low level output voltage SWITCH PART Upper satuaration voltage Output off current OP-AMP PART Vupsat Ioff VCC=5V, Iout=150mA VCC=5V 0.13 0.2 20 V A Vrston Vrsthys VoL VCTl=H / L VCTl=H / L /H RL=4.7 K 4.1 100 4.2 100 4.3 200 200 V mV mV Vio Iio Ib Vicm Isink SR VIN=4Vp_p, f=100KHz,Square 0 3.0 5.0 25 1.3 4.0 250 3.5 mV nA nA V mA us Iomax Vreg Vrl Vcc Vr2on Vr2off IL=50mA IL=0~200mA VCC=4.5~5.5V Pin21=Variation Pin21=Variation 200 3.5 -40 2.0 GND 3.6 10 3.7 10 30 Vcc 0.5 mA V mV mV V V VOO VOM1 VOM2 GVC VMON VMOFF VIN = Vref SVCC=5V, RL=24ohm, SVCC=12V, RL=24ohm VIN=0.1Vrms, f=1KHz, Rext=0 Pin22 = Variation Pin22 = Variation -50 3.1 3.6 10.5 GND 2 3.5 4.0 12 +50 13.5 0.5 Vcc mV V V dB V V Symbol ICC1 ICC2 ICC3 Icc4 Conditions VIN =Vref, Pin21=0V, Pin22=5V VIN = Vref, Pin21=5V, Pin22=5V VIN = Vref, Pin21=5V, Pin22=0V VIN = Vref, Pin21=0V, Pin22=0V Min. Typ. 9 19 15 6 Max. Unit mA mA mA mA
6
Rev. 1.0.1 Jul. 2000.
FAN8002D2
Electrical Characteristics (Continued)
(Unless otherwise specified, Ta = 25 C, VCC = VM12 = VM3,4 = 5V,Vref=1.65V, Comparator out=Hi-Z Parameter Input offset voltage Input bias current High level output voltage Low level output voltage Output sink current Output source current Common mode input range Open Loop voltage gain Ripple rejection ratio slew rate Common Mode rejection ratio Symbol VOF IB1 VOH1 VOL1 ISINK ISOU1 VICM GVO1 RR1 SR1 CMRR RL=1Kohm RL=1Kohm f=1kHz, VIN=-75dB f=120Hz, VIN=-20dB f=120Hz, 2Vp-p f=1kHz, VIN=-20dB Conditions Min. -7 4.4 2 2 -0.3 Typ. 0 4.7 0.1 4 4 80 65 1.2 80 Max. +7 200 0.4 4.0 Unit mV nA V V mA mA V dB dB V/us dB
Rev. 1.0.1 Jul. 2000.
7
FAN8002D2
Application Information
1. Reference Input
Pin 20 (REF) is a reference Input pin. * Reference Input The applied voltage at the reference input pin must be between 1.5 (V) and 3.5 (V), when Vcc = 5V.
2. Channel Mute Function
These pins are used for channel mute operation. * When the mute pin (pin22) is Low level, the mute circuit is enabled and the output circuits are muted.(both CH1, CH2) * When the voltage of the mute pin (pin22) is High level, the mute circuit is disabled and the output circuits operate normally. * If the chip temperature rises above 175 C, then the thermal shutdown (TSD) circuit is activated and the output circuits are muted. * Mute(pin 22)-CH1, 2 mute control input pin.
3. Protection Function
Thermal Shutdown (TSD) * 1) If the chip temperature rises above 175 C the thermal shutdown (TSD) circuit is activated and the output circuit is in the Mute state, that is Off state. * The TSD circuit has a temperature hysteresis of 25C.
4. Focus, Tracking Actuator
* The reference voltage REF is given externally through pin 20 * The input signal is amplified by R2/R1 times and then fed to the level shift circuit. * The level shift circuit produces the differential output voltages and drives the two output power amplifiers. Since the differential gain of the output amplifiers is equal to 2 x (1+ R4/R3), the input signal is amplified by (R2/R1) x 2 x (1+R4/R3). * If the total gain is too high, you can reduce the closed loop gain by adding an external resistance at pin18, 19 * The power reference voltage (Vr) is about a half of the supply voltage(VM).
13 16
M Power Amp
14 15
R4
-+
Vr R3
AP2
+R3
AP3
R4
LEVEL
+
SNIFT
20
+ -
AP1 +R1 Vref Vin 18 19
R2
8
Rev. 1.0.1 Jul. 2000.
FAN8002D2
5. Regulator & Control Function
The regulator circuit is illustrated in the figure.1. * The capacitor is used as a ripple eliminator and should have a good temperature characteristics. * The regulator output voltage is calculated as follows
V REG = ( 1 + R1 R2 ) x 2.5 = 3.4V
REG1 OUT
PVCC1
REG2 OUT
REG2 CONT
10
9
11
21
Regulator1
R1 R2
R1 R2
Figure 1.
* When the voltage of the pin21 is high (above 2.0V), the regulator operates normally. On the other hand, when the voltage of the pin21 is low (below 0.5V), the regulator will be turned off. Truth table is as follows Pin#21 High Low Regulator 2 Turn On Turn Off
+
-
-
+
Regulator2
Rev. 1.0.1 Jul. 2000.
9
FAN8002D2
6. Reset Circuit
The reset circuit is illustrated in the figure.2. * 1) The capacitor is used for delay.
RESET IN RESET OUT
CRST
7
24
23
R1 R2 VREG
Figure 2.
* 2) When the voltage of the pin7 is above 4.2V, the output of the reset circuit is OPEN (no load). On the other hand, when the voltage of the pin7 is low , the output of the reset circuit is low. Truth table is as follows Pin#7 High Low Reset Output Open Low
7. Switch Circuit
The switch circuit is illustrated in the figure.3.
SWITCH IN
PVCC1
+ SWITCH OUT 21 9
8
Switch
When the voltage of the pin21 is high (above 2.0V), the output of the switch circuit is above 4.8V. On the other hand, when the voltage of the pin21 is low (below 0.5V), the routput of the reset circuit is below 0.5V. Truth table is as follows Pin#21 High Low 10 Switch Output Above 4.8v Below 0.5v Rev. 1.0.1 Jul. 2000.
FAN8002D2
The regulator2 control pin and the switch control pin is same(pin21). If the pin21 is high, first switch circuit operates and then regulator circuit operates normally. The operation is illustrated in the following time table
Control Signal Switch Output Reg2 Output
OFF OFF OFF
ON ON ON
Delay time
Rev. 1.0.1 Jul. 2000.
11
FAN8002D2
Test Circuit
FOCUS
TRACKING
MUTE OP IN (+) OP IN (-) OP OUT
REG2 CONT VREF 2+
~
~ 10F 1 3 SW2
2+ 1
8
3
SW3
+ 28 27 26 25 24 23 22 21 20 19 18 17 16 15
FAN8002D2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
COMP IN (+)
COMP IN (-)
COMP OUT
+
+
COMP OUT
COMP IN (-)
COMP IN (+)
SW1 1 RESET INPUT + 1000F RIPPLE ~
2
+ 100F
REG1 REG2
8
VCC
OP-AMP
&
COMPARATOR PART
COMP IN(+) OPIN(+)
COMP IN(-) OPIN(-)
COMP OUT OPOUT
A 1 VPULSE 2 VA 3 1
B D 2 VB C 1 2 VCC 3 50 VOUT
12
Rev. 1.0.1 Jul. 2000.
FAN8002D2
Application Circuit
(Voltage Control Mode)
[SERVO PRE AMP] MUTE REG2 CONTROL
VREF FOCUS TRACKING INPUT INPUT
OPAMP OPAMP OPAMP IN+ INOUT
RESET OUT
TRACKING
+ 28 27 26 25 24 23 22 21 20 19 18 17 16 15
FAN8002D2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RESET IN TRACKING COMP1 COMP1 COMP1 COMP2 COMP2 COMP2 OUT IN+ INOUT ININ+
SWITCH OUT
+
+
FOCUS
+ 100F
REG1 REG2
VCC
Rev. 1.0.1 Jul. 2000.
13
FAN8002D2
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 INTERNATIONAL. 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 12/1/00 0.0m 001 Stock#DSxxxxxxxx 2000 Fairchild Semiconductor International
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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