TDA7473A013TR ,QUAD BTL DRIVER WITH VOLTAGE REGULATOR TDA7473QUAD BTL DRIVER WITH VOLTAGE REGULATOR4 BUILT-IN POWER BRIDGES (4 x 0.6A)NO EXTERNAL COMPO ..
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TDA7478DTR ,SINGLE CHIP RDS DEMODULATORTDA7478SINGLE CHIP RDS DEMODULATOR1
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TDA7473A-TDA7473A013TR
QUAD BTL DRIVER WITH VOLTAGE REGULATOR
TDA7473QUAD BTL DRIVER WITH VOLTAGE REGULATOR BUILT-IN POWER BRIDGES(4x 0.6A) EXTERNALCOMPONENTS
SINGLE POWER SUPPLY
WIDE SUPPLY VOLTAGE RANGE(6 TO 15V) REGULATOR DRIVER FOR EXTERNAL
PASS TRANSISTOR WITH FOLD-BACK
SHORT CIRCUIT PROTECTION
ADJUSTABLE REGULATOR (2.0 TO 3.6V@
200mA) WITH SHORT CIRCUIT PROTEC-
TION
DESCRIPTIONThis deviceisa quad power driver circuitin BTL
configuration, intended for useasa power driver
for servo systems witha single supply.
It’s specially dedicatedto compact disc players
and it’s capableof driving focus& tracking actua-
tors sledge& spindle motors.
The regulators are mainly usedto havea 5V sup-
ply for the power part anda lower programmable
voltagefor the logic circuits.
June 1998
VS/2
OUT1+
OUT1-
OUT4-
REFERENCE
ADJ
REG
ST_BY IN4 COMM
REF
VS3IN2 IN1DRIV
D95AU223BIN3
VS/2
OUT2+
OUT2-
VS/2
OUT3+
OUT3-
VS/2
OUT4+
TRACKING
ACTUATOR
SLEDGE
MOTOR
SPINDLE
MOTOR
FOCUS
ACTUATOR
VBG
VBG
VBG
VS4
GND GNDGNDGND
VSUP
VS1 VS2
R1
R2
Figure1: Quad BTL Power Bridges+ Multifunction Regulators.
SO28 (24+2+2)1/5
PIN FUNCTIONS Pin Name Description 5V 5V regulated input VSUP Positive power supply (battery) OUT1- 1.st channelnegative output VS1 1.st channelpower supply OUT1+ 1.st channelpositive output OC Overcurrent sense input GND Ground GND Ground ADJ Regulated voltage adjust input OUT2+ 2.nd channel positive output VS2 2.nd channel power supply OUT2_ 2.nd channel negativeoutput ST_BY Stand_by REG Regulated voltage output COMM Common negative input IN2 Positive inputfor the 2.nd channel OUT3- 3.rd channel negative output VS3 3.rd channel power supply OUT3+ 3.rd channel positive output IN3 Positive inputfor the 3.rd channel GND Ground GND Ground IN4 Positive inputfor the 4.th channel OUT4+ 4.th channel positive output VS4 4.th channel power supply OUT4- 4.th channel negative output IN1 Positive inputfor the 1.st channel DRIV Pass transistor driver
VSUP
OUT1-
VS1
OUT1+
GND
IN1
GND
IN2
IN3
GND
GND
OUT4+
IN4OC
VS4
OUT4-
DRIV1
OUT2+ OUT3+
D95AU310A
COMM
VS2
OUT2- OUT3-
VS3
ST_BY14
ADJ
REG
PIN CONNECTION (Top view)
TDA74732/5
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value UnitVSUP DC Supply Voltage 18 V Channel Power Supply 6 V
TOP Operating Temperature Range -25to80 °C Maximum Junction Temperature 150 °C
THERMAL DATA
Symbol Parameter Value UnitRthj-amb Thermal ResistanceJunction toAmbient Max. 50(*) °C/W
Rthj-pins Thermal ResistanceJunction toPins Typ. 17 °C/W
(*) with 6cm2of copper heatsinkon board.
ELECTRICAL CHARACTERISTICS (@ VSUP= 6V, Tamb =25°C, unless otherwise specified.)
Symbol Parameter Test Condition Min. Typ. Max. UnitVSUP Supply Voltage 6 15 V
Maximum Power Dissipation(1) 1.5 W
Quiescent current(2) fromVS V(pin4, 11,18,25) =5V 20 35 mA
Quiescent current(2) from5V V(pin1)= 5V,R2 = ∞ 1.8 2.5 mA
Quiescent current(2) from VSUP VSUP= 15V 1.3 2.5 mA
VSUP =6V 1 2 mA
Stand-bycurrent from5V (pin1) V(pin1)= 5V,R2 = ∞ 1.2 2 mA
Stand-by current from VSUP VSUP= 15V 0.4 0.8 mA
VSUP=6V 0.3 0.6 mA
CHANNELS BTLPeak output currentfor channels 0.6 A
VSAT VSAT HIGH SIDE I= 0.6A;VS=5V 1.3 1.6 A
VSAT LOW SIDE I= 0.6A;VS=5V 0.7 0.9 A
Output voltage swingpeak-to-
peak= 5V,Iout= 0.6A 5.5 6 Vpp
Voltage gainfor channels 25.5 26.5 27.5 dB
Channels output offset voltage -180 -50 100 mV
VST-BY Channel St-By Threshold Active --> St-By 0.65Vreg 0.75Vreg 0.85Vreg V
St-By --> Active 0.50Vreg V
REGULATORSV5V Vpin1 Iout= 0.2A 4.85 5.05 5.25 V
Mindrop5V -->REG Iout= 0.2A 1.2 1.3 V
IDRIV Output current from DRIVfor
pass-transistor driving 100 mA
Output current from DRIVin
stand-by 50 80 mA
DROP VSUP--> DRIV IDRIV= 20mA 0.2 0.25 V
Threshold voltagefor overcurr.
protection (VSUP- OC)
VSUP=6V 190 230 270 mV
VSUP= 12V 120 160 200 mV
VSUP= 15V 80 100 120 mV
VREG Regulator Voltage R1,R2= 1KΩ 2.45 2.53 2.65 V
Min REG voltage (settable) 1.8 2 V
Max REG voltage (settable) 3.6 3.8 V
Output current from REGin
Stand-by
R1,R2= 1KΩ 20 mA
(1)@ Tamb =70°C,on board 6cm2 copper heatsink
(2)INx= COMM;no loadsonthe regulatorsoutputs
(3)Deviceis active when St-By= Low
TDA74733/5
SO28 PACKAGEMECHANICAL DATA
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX. 2.65 0.104 0.1 0.3 0.004 0.012 0.35 0.49 0.014 0.019 0.23 0.32 0.009 0.013 0.5 0.020 45° (typ.) 17.7 18.1 0.697 0.713 10 10.65 0.394 0.419 1.27 0.050 16.51 0.65 7.4 7.6 0.291 0.299 0.4 1.27 0.016 0.050
S8° (max.)
TDA74734/5
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