4-Channel Motor Driver 4-CH Balanced Transformerless(BTL) Driver

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4-Channel Motor Driver 4-CH Balanced Transformerless(BTL) Driver

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KA9258D(KA9258CD)
4-Channel Motor Driver
4-CH Balanced Transformerless(BTL) Driver Output Gain Adjustable Built OP-Amplifier Built Mute Function Built Thermal Shutdown Circuit (TSD) Operating Range 13.2V
Description
KA9258D monolithic integrated circuit, suitable 4-CH motor driver which drives tracking actuator, focus actuator, sled motor spindle motor compack disk player system.
28-SSOPH-375
Typical Applications
Compact Disk Player (CDP) Video Compact Disk Player (VCD) Automotive Compact Disk Player Other Compact Disk Media
Ordering Information
Device KA9258CD Package 28-SSOPH-375 Operating Temp. -40°C +85°C -40°C +85°C
KA9258CDTF 28-SSOPH-375
Rev. 1.0.4
©2003 Fairchild Semiconductor Corporation
DO1.1
KA9258D(KA9258CD)
GND3 DO4.2 DO4.1 DI4.2 DI4.1 VREF VCC2
Assignments
DO1.2 DI1.1 DI1.2 REGO MUTE
KA9258D
DI2.2 DO2.1 DO2.2 GND2 OPOUT DI2.1 GND1
VCC1 DI3.2 DI3.1 DO3.2
DO3.1
OPIN+ OPIN-
KA9258D(KA9258CD)
Definitions
Number Name DO1.1 DO1.2 DI1.1 DI1.2 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 DI4.2 DO4.1 DO4.2 GND3 Channel output Channel output Channel input Channel input External transistor base drive output Regulator output Mute signal input Ground Channel output Channel output Channel input Channel input Ground OP-amplifier output OP-amplifier negative input OP-amplifier positive input Channel output Channel output Channel input Channel input Power supply voltage Power supply voltage Bias Voltage Channel input Channel input Channel output Channel output Ground Function Description
KA9258D(KA9258CD)
Internal Block Diagram
OPIN+
DO4.1
DO3.1
DO4.2
VREF
DO3.2
GND3
VCC2
DI4.2
DI3.2
2.5V
4-CH Driver Output
DO1.1
DO1.2
DI1.1
DI1.2
REGO
MUTE
GND1
DI2.1
DI2.2
DO2.1
DO2.2
GND2
OPOUT
OPIN-
DI4.1
VCC1
DI3.1
KA9258D(KA9258CD)
Equivalent Circuits
Driver Input
Driver Output
2.5V
11.8k
0.58k VREF1
Regulator
Regulator Output
Mute Input
Bias Input
100k
KA9258D(KA9258CD)
Equivalent Circuits (Continued)
OP-AMP Output OP-AMP Input
4.8k
4.8k
KA9258D(KA9258CD)
Absolute Maximum Ratings 25°C)
Parameter Supply Voltage Power Dissipation Operating Temperature Storage Temperature Maximum Output Current Symbol TOPR TSTG IOMAX Value
note
Unit
+150
Note: When mounted 76.2mm 114mm 1.57mm (Phenolic resin material). Power dissipation reduces 13.6mW/°C using above Ta=25°C exceed (Safe Operating Area).
Power Dissipation Curve
(mW)
3,000 2,000
1,000 Ambient temperature, [°C]
Recommended Operating Condition 25°C)
Parameter Operating Supply Voltage Symbol VOPR Value 13.2 Unit
KA9258D(KA9258CD)
Electrical Characteristics 25°C)
(Ta=25°C, VCC=8V, RL=8, f=1kHz, unless otherwise specified) Parameter REGULATOR PART Regulator Output Voltage Load Regulation Line Regulation Quiescent Circuit Current Input Offset Voltage
(Note1)
Symbol VREG ICCQ ISINK ISOURCE VOF1 VOH1 VOL1 ISINK1 ISOURCE1 GVO1 CMRR1
(Note1)
Conditions IL=100mA IL=0 200mA IL=200mA, VCC=6 VCC= 2VRMS, 1kHz 0.1VRMS, 1kHz -20dB, 120Hz 100Hz, Square wave -75dB, =1kHz -20dB, =120kHz Square, VOUT 2Vp-p, 120kHz -20dB, =1kHz
Min. 4.75 -40.0 -10.0 -5.0 60.0
Typ. 80.0
Max. 5.25 10.0 20.0 13.5
Unit V/µs V/µs
DRIVER PART (EXCEPT LOADING MOTOR DRIVER)
Output Offset Voltage Maximum Sink Current Maximum Source Current Maximum Output Voltage Closed Loop Voltage Gain Ripple Rejection Ratio Slew Rate (Note1) Input Offset Voltage Input Bias Current High Level Output Voltage Level Output Voltage Output Sink Current Output Source Current Open Loop Voltage Gain Ripple Rejection Ratio Slew Rate (Note1) Common Mode Rejection Ratio
Note Guranteed Design Value
(Note1)
LOADING MOTOR DRIVER PART (UNLESS OTHERWISE SPECIFIED, VCTL=OPENED)
KA9258D(KA9258CD)
Application Information
Mute Function
High Open
Mute circuit Mute-off Mute-on Mute-on
4-Channels driver Bias Circuit Block
When mute (pin high level, bias circuit driver activated. other hand, when mute (pin7) open level, bias circuit driver disabled. that 4-channels driver output circuit will muted.
(Thermal Shutdown) Function
VREFBG
4-Channels driver Bias Circuit Block
VREF output voltage band-gap-referenced biasing circuit acts input voltage circuit. base-emitter voltage transistor, designed turn-on below voltage.
VREFBG 460[mV
When chip temperature rises 175°C, then turn-on voltage would drop down 460mV. Hence, would turn output circuit will muted. circuit hysteresis temperature 25°C.
OP-AMP
General OP-amplifier integrated user's convenience.
KA9258D(KA9258CD)
Balanced Transformerless(BTL) Driver
VREF
Buffer
Level Shift
Buffer
Driver
voltage, VREF, reference voltage given bias voltage #23. input signal through amplified 10K/10K times then level shift. level shift produces current difference between input signal arbitrary reference signal. current produced into driver buffer. Driver Buffer operates power transistor output stage according state input signal. output stage driver motor rotating forward direction operating transistor other hand, transistor operating, motor rotating reverse direction When input voltage through below VREF, then direction motor forward direction. When input voltage through above VREF, then direction motor reverse direction. desired change gain, then used.
Connect by-pass capacitor, 0.1µF between supply voltage source.
VCC2 VCC1
KA9258D
0.1uF
Radiation connecting internal package. Connect external GND.
KA9258D(KA9258CD)
Typical Performance Characteristics
Test contrions:VREF=2.5[V], Mute
RLOAD=8[]
Figure
Figure
mute
RLOAD=4[]
Figure IMUTE
Figure ISINK
RLOAD=4[]
ILOAD=100[mA]
Figure ISOU
Figure VREG
KA9258D(KA9258CD)
Test Circuits
470µF SW17 10µF PC-V 1000µF Open Short
OPIN(-) OPOUT
SW16 SW15
SW14
OPIN(+) GND2 DO3.1 DO2.2
SW10 DO3.2 DO2.1 10µF DI3.1 DI3.2 VCC1
DI2.2 DI2.1
10µF
VCC2 2.5V DI4.1 10µF DI4.2 Vref
MUTE
MUTE
KS8772 10µF 100µF
VREF DI1.2 DI1.1
DO4.1 SW13
DO4.2 DO1.2 GND3 SW11
DO1.1
SW12
KA9258D(KA9258CD)
Application Circuits
SLED BIAS
Focus Actuator
Servo Pre-amp
TEACKING FOCUS SPINDLE
Tracking Actuator
KSB772
Mute
KA9258D
Sled Motor
Spindle Motor
KA9258D(KA9258CD)
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES RIGHT MAKE CHANGES WITHOUT FURTHER NOTICE PRODUCTS HEREIN IMPROVE RELIABILITY, FUNCTION DESIGN. FAIRCHILD DOES ASSUME LIABILITY ARISING APPLICATION PRODUCT CIRCUIT DESCRIBED HEREIN; NEITHER DOES CONVEY LICENSE UNDER PATENT RIGHTS, RIGHTS OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS AUTHORIZED CRITICAL COMPONENTS LIFE SUPPORT DEVICES SYSTEMS WITHOUT EXPRESS WRITTEN APPROVAL PRESIDENT FAIRCHILD SEMICONDUCTOR CORPORATION. used herein: Life support devices systems devices systems which, intended surgical implant into body, support sustain life, whose failure perform when properly used accordance with instructions provided labeling, reasonably expected result significant injury user.
www.fairchildsemi.com 6/11/03 0.0m Stock#DSxxxxxxxx 2003 Fairchild Semiconductor Corporation
critical component component life support device system whose failure perform reasonably expected cause failure life support device system, affect safety effectiveness.

4-Channel Motor Driver 4-CH Balanced Transformerless(BTL) Driver

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