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FAN8000D (KA9268D)
4-CH Motor Driver
Features
* * * * * * * Built in 4-CH balanced transformerless(BTL) driver Output gain adjustable Built in normal OP-amp Built in mute function Built in level shift circuit Built in thermal shutdown function Operating range 4.5~13.2V
Description
The FAN8000D is a monolithic integrated circuit, suitable for 4-CH motor driver which drives tracking actuator, focus actuator, sled motor and tray motor of CD/CD-ROM/DVD system.
28-SSOPH-375
Target Application
* * * * Compact disk player Video compact disk player Digital Video Disk Player Car compact disk player
Ordering Information
Device FAN8000D Package 28-SSOPH-375 Operating Temp. -40C ~ +85C -40C ~ +85C
FAN8000DTF 28-SSOPH-375
Rev. .1.0.1 February. 2000.
(c)2000 Fairchild Semiconductor International
1
FAN8000D (KA9268D)
Pin Assignments
OPIN (-) 15 14 OPOUT OPIN (+) 16 13 GND2
DO4.2
DO4.2
DO3.2
VCC2
VCC1
DI4.2
DI4.1
DI3.2
28
27
26
25
24
23
22
21
20
19
DI3.1
FIN (GND)
18
17
FAN8000D
1 DO1.1
2 DO1.2
3 DI1.1
4 DI1.2
5 REG
6 REO
7 MUTE FIN (GND)
8 GND1
9 DI2.1
10 DI2.2
11 DO2.1
12 DO2.2
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 Pin Name DO1.1 DO1.2 DI1.1 DI1.2 REG REO MUTE GND1 DI2.1 DI2.2 DO2.1 DO2.2 GND2 OPOUT OPIN(-) OPIN(+) DO3.1 DO3.2 DI3.1 DI3.2 VCC1 VCC2 VREF DI4.1 I/O O O I I O I I I O O O I I O O I I I I Drive output Drive output Drive input Drive input Regulator Regulator output Mute Ground 1 Drive input Drive input Drive output Drive output Ground 2 Op-amp output Op-amp input (-) Op-amp input (+) Drive output Drive output Drive input Drive input Supply voltage Supply voltage 2.5V bias voltage Drive input Pin Function Descrition
2
DO3.1
GND3
VREF
FAN8000D (KA9268D)
Pin Definitions (Continued)
Pin Number 25 26 27 28 Pin Name DI4.2 DO4.1 DO4.2 GND3 I/O I O O Drive input Drive output Drive output Ground 3 Pin Function Descrition
Internal Block Diagram
DI4.2 DI4.1 DI3.2 DI3.1 FIN (GND) OPIN(+) OPIN (-) 15 - 14 OPOUT DO4.2 DO4.1 DO3.2 18 DO3.1 17 - Level shift - + GND3 VREF VCC2 VCC1 21
28
27
26
25 10k
24
23
22
20 10k
19
16
- Level shift - +
+ 10k
-
+
TSD 10k
+
+
Regulator 10k 50k - Level shift - + 10k 1 DO1.1 2 DO1.2 3 DI1.1 4 DI1.2 5 REG 6 REO 10k 7 MUTE (GND) FIN 8 GND1 9 DI2.1 10k + Mute 50k 10k 10 DI2.2 11 DO2.1 10k +
DO2.2
3
GND2
-
-
+ Level shift - 12
+
13
FAN8000D (KA9268D)
Equivalent Circuits
Driver input Driver output
VCC
10k 2.5V
50 3 10 19 25 11.8k 1 2 11 12
17 18 26 27 50 4 100 9 0.58k VREF1 20 24 20k
Regulator
Regulator output
VCC VCC 53k 50 5
VCC 23k
VCC
VCC 2k 6 50 10k 10k 2k
10k
Mute input
Bias input
VCC 100k 50 7 50k 23 50
50k
4
FAN8000D (KA9268D)
Equivalent Circuits (Continued)
Op amp output Op amp input
VCC VCC VCC VCC VCC
50 14 50 50
15 50 50
16
4.8k
4.8k
Absolute Maximum Ratings ( Ta=25C)
Parameter Supply voltage Power dissipation Operating temperature Storage temperature Maximum output current Symbol VCC PD TOPR TSTG IOMAX Value 18 1.7note -40 ~ +85 -55 ~ +150 1 Unit V W C C A
Notes: 1. When mounted on 76.2mm x 114mm x 1.57mm PCB (Phenolic resin material). 2. Power dissipation reduces 13.6mW / C for using above Ta=25C 3. Do not exceed Pd and SOA (Safe Operating Area).
Pd (mW)
3,000 2,000
1,000 0 0 25 50 75 100 125 150 175 Ambient temperature, Ta [C]
Recommended Operating Condition ( Ta=25C)
Parameter Operating supply voltage Symbol VCC Value 4.5 ~ 13.2 Unit V
5
FAN8000D (KA9268D)
Electrical Characteristics
(Unless otherwise specified, Ta = 25 C, VCC = 8V, RL=8)
REGULATOR CIRCUIT
Parameter Regulator output voltage Load regulation Line regulation Symbol VREG VRL VCC Conditions IL=100mA IL=0 ~ 200mA IL=200mA, VCC=6 ~ 9V Min. 4.75 -40.0 -10.0 Typ. 5 0 0 Max. 5.25 10.0 20.0 Units V mV mV
DRIVE CIRCUIT
Parameter Quiescent circuit current Input offset voltage Output offset voltage Maximum sink current Maximum source current Maximum output voltage Closed loop voltage gain Ripple rejection ratio Slew rate Symbol ICCQ VOF VOO ISINK ISOURCE VOM AVF RR SR VI=0 RL=4, VCC RL=4, GND VI=2VRMS, 1kHz VI=0.1VRMS, 1kHz VI=-20dB, 120Hz 100Hz, Square wave Conditions Min. 5.5 -5.0 -30 0.5 0.5 2.5 10.5 60.0 1.0 Typ. 9.5 0 0 0.8 0.8 3.0 12.0 80.0 2.0 Max. 13.5 5.0 30 13.5 V / s V dB A Units mA mV
OP AMP CIRCUIT
Parameter Input offset voltage Input bias current High level output voltage Low level output voltage Output sink current Output source current Open loop voltage gain Ripple rejection ratio Slew Rate Common mode rejection ratio Symbol VOF1 IB1 VOH1 VOL1 ISINK1 ISOURCE1 GVO1 RR1 SR1 CMRR1 Conditions RL=50, GND RL=50, VCC VIN=-75dB, f=1kHz VIN=-20dB, f=120kHz Square, VOUT=2Vp-p, f=120kHz VIN=-20dB, f=1kHz Min. -5 6 10 10 65 50 0.5 70 Typ. 40 50 78 70 1 84 Max. +5 300 1.8 Units mA nA V V mA mA dB dB V / s dB
6
FAN8000D (KA9268D)
Application Information
1. MUTE
Pin #7 High Low Open
Mute circuit Turn-off Turn-on Turn-on
7
Output driver bias
* When the pin7 is open or the voltage of the pin7 is below 0.5V, the mute circuit is activated so that the output circuit is muted. * When the voltage of the pin7 is above 2V, the mute circuit is deactivated and the output circuit operates normally. * If the chip temperature rises above 175C, then the TSD (Thermal Shutdown) circuit is activated and the output circuit is muted.
2. TSD (THERMAL SHUTDOWN)
VREF BG Output driver bias
R11
Q11 R12
* The VREF BG is the output voltage of the band-gap-referenced biasing circuit and acts as the input voltage of the TSD circuit. * The base-emitter voltage of the TR, Q11 is designed to turn-on at below voltage. VBE = VREF BG x R12 / (R11 + R12) = 460mV * When the chip temperature rises up to 175C, then the turn-on voltage of the Q11 would drop down to 460mV. (Hysteresis: 25C) Hence, the Q11 would turn on so the output circuit will be muted.
7
FAN8000D (KA9268D)
3. OP-AMP OP-amp is integrated in the IC for user's convenience.
AMP-I(+) 16 pin AMP -I(-) 15 pin
+ - 14 pin AMP-O
4. DRIVER
VREF (2.5V) 3 10 10k 4 9 24 100 20
+ -
AMP Level shift
-I
+ -
Buffer -V M 1 2 12 18 26 Q4 +V
Q1
Q2
19 25 10k +I + - Buffer Q3
11 17 27
* The voltage, VREF, is the reference voltage given by the bias voltage of the pin23. * The input signal through the pin3 is amplified by 10k/10k times and then fed to the level shift. * The level shift produces the current due to the difference between the input signal and the arbitrary reference signal. The current produced as +I and -I is fed into the driver buffer. * Driver Buffer drives the power TR of the output stage according to the input signal. * The output stage is the BTL driver and the motor is rotating in forward direction by operating TR Q1 and TR Q4. On the other hand, if TR Q2 and TR Q3 is operating, the motor is rotating in reverse direction * When the input voltage through the pin3 is below the VREF, the motor rotates in forward direction. * When the input voltage through the pin3 is above the VREF, the motor rotates in reverse direction. * To change the gain, pin4 or 24 can be used. 5. Connect a by-pass capacitor, 0.1F between the supply voltage source.
VCC1 22 VCC2 21 104
6. Radiation fin is connecting to the internal GND of the package. Connect the fin to the external GND.
8
FAN8000D (KA9268D)
Typical Performance Characteristics
VCC vs. ICC
13.5 11.5 ICC [mA] Imute [mA] 9.5 7.5 5.5 4 6 8 10 12 VCC [V] 14 16 18 0 PIN23=2.5V 10 8 6 4 2 0 4 6 8 10 12 14 VCC [V] 16 18 20 Vc c = var i
VCC vs. Imute
VCC vs. Ireg
5.25 5.15 Isink [mA] Vreg [V] 5.05 4.95 4.85 4.75 4 6 8 10 12 VCC [V] 14 16 18 20 PIN23=2.5V 1300 1100 900 700 500 4 6
VCC vs. Isink
PIN23=2.5V RL=4
8 VCC [V]
10
12
14
VCC vs. Isource
1400 1200 Isource [mA 1000 800 600 400 4 6 8 VCC [V] 10 12 14 PIN23=2.5V RL=4 1300 1250 1200 Isink [m 1150 1100 1050 1000 -25
Temp. vs. Isink
PIN23=2.5V RL=4
0
25
50
75
100
Temp [C]
9
FAN8000D (KA9268D)
Typical Performance Characteristics (Continued)
Temp vs. ICC
13 ..5 11.5 9.5 7.5 PIN23=2.5V 5.5 -25 0 25 50 75 100 Temp [C] ICCM [mA] ICC [mA 4 3 2 1 0 -25 0 6 5
Temp vs. ICCM
VCC=13V PIN23=2.5V 25 50 Temp [C] 75 100
Temp vs. VREG
5.25 5.15 Isource [mA Vreg [V 5.05 4.95 4.85 4.75 -25
VCC=13V
Temp vs. ISOURCE
1500 1400 1300 1200 1100 1000 -25 PIN23=2.5V RL=4
0
25 50 Temp [C]
75
100
0
25 50 Temp [C]
75
100
10
FAN8000D (KA9268D)
Test Circuits
50k 50k OPI + 470F 1M SW17 V SW16 1k 1 0 0 SW9 2 4 V 16 OPIN(+) GND2 13 V 17 DO3.1 DO2.2 12 8 SW10 18 DO3.2 DO2.1 11 10F + DR2 19 DI3.1 20 DI3.2 DR3 21 VCC1
DI2.2 10 DI2.1
1 + 10F PC-V + 1000F 10k Open 1M Short
0
2
10k SW15 SW14 1k 1
3 2
1
SW8 2 15
SW6 1
0 1 2 4
0
SW5 2
OPIN(-) OPOUT 14
4
SW7
+ 10F
9 8
VCC
22
F A N 8 0 0 0 VCC2 D MUTE
GND
MUTE 1
SW4 2
7 + 100F
2.5V DR4
23 Vref 24 DI4.1
REO
6 5 KS8772 4 3 2 + 10F
VREF
IL Pin 21, 22 DR1
10F +
25 DI4.2 26 DO4.1
DI1.2 DI1.1
8
SW13 27 DO4.2 DO1.2 28 GND3 8
DO1.1
SW3
1 V
4 1 SW11 0 2 1
4 2 4 SW12 0 1 SW1 0 2 SW2 4
11
FAN8000D (KA9268D)
Application Circuits
15 OPIN(-) 16 OPIN(+) 17 DO3.1 SLED MOTOR SPINDLE SERVO SLED BIAS VCC 22 VCC2 TRACKING AMP FOCUS TRACKING ACTUATOR 23 Vref 24 DI4.1 25 DI4.2 26 DO4.1 27 DO4.2 28 GND3 18 DO3.2 19 DI3.1 20 DI3.2 21 VCC1
OPOUT 14 GND2 13 DO2.2 12 DO2.1 11 DI2.2 10 SPINDLE MOTOR
F A N 8 0 0 0 D
DI2.1 9 GND 8 MUTE OFF: HIGH ON: LOW 5V REG.OUT REO 6 VREF 5 DI1.2 4 DI1.1 3 DO1.2 2 DO1.1 1 FOCUS ACTUATOR KSB772 VCC
MUTE 7
12
FAN8000D (KA9268D)
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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