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Partno	Mfg	Dc	Qty	Available	Descript
TDA7278	ST	N/a	181	avai	HIGH-EFFICIENCY CD ACTUATOR DRIVER

TDA7278 ,HIGH-EFFICIENCY CD ACTUATOR DRIVERABSOLUTE MAXIMUM RATINGS (25°C)Pin Name Min Max UnitHIN 1, HIN 2, HIN 3, HIN 4 -0.4 8 VHOUT 1A, HOU ..
TDA7282 ,DUAL LOW-VOLTAGE POWER AMPLIFIERTDA2822MDUAL LOW-VOLTAGE POWER AMPLIFIER.SUPPLY VOLTAGE DOWN TO 1.8V.LOW CROSSOVER DISTORSION.LOW Q ..
TDA7284 ,RECORD/PLAYBACK CIRCUIT WITH ALCTDA7284RECORD/PLAYBACK CIRCUIT WITH ALCWIDE OPERATING SUPPLY VOLTAGE (3Vto 12V)VERY LOW INPUT NOIS ..
TDA7284D ,RECORD/PLAYBACK CIRCUIT WITH ALCTDA7284RECORD/PLAYBACK CIRCUIT WITH ALCWIDE OPERATING SUPPLY VOLTAGE (3Vto 12V)VERY LOW INPUT NOIS ..
TDA7285 ,STEREO CASSETTE PLAYER AND MOTOR SPEED CONTROLLERBLOCK DIAGRAMMay 19971/11TDA7285PIN CONNECTION (Top view)
TDA7285D ,STEREO CASSETTE PLAYER AND MOTOR SPEED CONTROLLERTDA7285STEREO CASSETTE PLAYER ANDMOTOR SPEED CONTROLLERWIDE OPERATING SUPPLY VOLTAGE (1.8Vto 6V)HIG ..
THC63LVDM83D , REDUCED SWING LVDS 24Bit COLOR HOST-LCD PANEL INTERFACE
THC63LVDM83D , REDUCED SWING LVDS 24Bit COLOR HOST-LCD PANEL INTERFACE
THC63LVDM87 , LOW POWER / SMALL PACKAGE / 24Bit COLOR LVDS TRANSMITTER
THC63LVDM87 , LOW POWER / SMALL PACKAGE / 24Bit COLOR LVDS TRANSMITTER
THCV213 , LVDS SerDes transmitter and receiver
THCV215 , THCV215 is designed to support video data transmission between the host and display.

TDA7278
HIGH-EFFICIENCY CD ACTUATOR DRIVER
TDA7278
HIGH-EFFICIENCY CD ACTUATOR DRIVER
WIDE OPERATIVE SUPPLY RANGE (1.6 to
5V) LOW VOLTAGE OPERATION CAPABIL-
ITY
4 LOAD DRIVING VOLTAGES PWM REGU-
LATED (STEP DOWN FROM BATTERY)
LOW ON RESISTANCE H BRIDGES
(2 x 1.6Ω MAX + 2 x 2.5Ω MAX) FOR:
– FOCUS AND TRACKING ACTUATORS
– SLEDGE AND SPINDLE MOTORS
SYNCHRONIZABLE SAWTOOTH OSCILLATOR
CONFIGURABLE DC/DC CONVERTER FOR
ADJUSTABLE MAIN POWER SUPPLY, WITH
LOW ON RESISTANCE (0.4Ω MAX) SWITCH
GENERAL ENABLE INPUT
ADJUSTABLE WATCH DOG AND DELAYED
POWER ON RESET FUNCTIONS
ADJUSTABLE COMPARATORS FOR BAT-
TERY LOW AND BATTERY EMPTY DETEC-
TION
PIN CONNECTION
ABSOLUTE MAXIMUM RATINGS (25°C)
* Pin 1, 8, 12, 14, 20, 26 and 33 are ESD sensitive (max. voltage ±1KV)
THERMAL DATA
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PIN FUNCTIONS
TDA7278
ELECTRICAL CHARACTERISTICS (Tamb = 25°C, VBAT = 1.6V unless otherwise specified)
(1): all the 4 PWM outputs switched off.
(2) TRESET = width of the Reset pulse on pin 19 = K ⋅ C, where C is the capacitance on pin 20 (CRES).
To avoid reset, the frequency of watch dog pulses must be greater than (3 ⋅ TRESET)-1
(3) All the 4 PWM output switched OFF, auxiliary and main DC/DC converters polarized but not switching
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Figure 1: Block Diagram.
TDA7278
Figure 2: Test Circuit
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Figure 3: DC – DC Converter Configuration.
TDA7278
Figure 4: DC – DC Converter: Feedback and Compensation Networks.
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