BD7962FM Rohm, BD7962FM Datasheet
BD7962FM
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BD7962FM Summary of contents
Page 1
... Power driver IC for CD changer BD7962FM BD7962FM is a 6-channel driver (3-channel BTL driver + 3-channel loading driver) for car CD changer. This IC integrates 1-channel operational amplifier for various purposes. The size reduction of the set is achieved by integrating loading driver and actuator driver into a single chip. ...
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... CC 24 LDCONT1 25 GND1 26 OPOUT 27 OPIN− MUTE 30 IN4REV 31 IN4FWD 32 OPIN3− 33 OP3OUT 34 OUT6+ 35 OUT6− 36 BIAS BD7962FM CH4 CH3 CONT1 − + − Level shift Level shift 47k Level shift Level shift − + − − ...
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... OUT1+/OUT1−/OUT2+/OUT2− OUT3+/OUT3−/OUT4+/OUT4− LDCONT1 50k 47k pin24 50k LDCONT2/LDCONT3 40k pin8, 9 pin11, 13, 26, 33 BD7962FM V 2 (CH3 / CH4 (CH1 / CH2) CC 10k pin15~22 10k 10k 10k OUT5+/OUT5− OUT6+/OUT6− V ...
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... I LDC2 − OPOFS − − I OPIB − V 0.3 OPICM I 500 800 SOURCE − SINK − BD7962FM =8Ω) L Max. Unit Conditions 0.70 mA Under no load 32 mA Under no load 5.7 mA Under no load +70 mV − V − V =BIAS±0.5V Opamp : Buffer µA ...
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... MUTE − + − T.S.D + − LD CONT2 47k + LD CONT3 + − ICONT ICONT IFIN (CH1) OPAMP_B FIN CONT CONT Fig.1 BD7962FM CONT LDDRV_B DRIVE_B (CH4) (CH3 ICONT IQ2 CH4 CONT1 − + Level shift ...
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... BIAS + VOFB VOFB− V VBIAS OUTF OUTR (VOLD) RL DRIVE_B INN SW2 10k IOP 10k VBOP− SW1 2 1 VIN OPAMP_B + V Fig.2 BD7962FM OUT OPOUT + SW3 OUTF OUTR V VOLD + + V V SW4 LDDRV_B 6/10 ...
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... VLD I INL I LDC V 2 OPOFS OPIB V 2 OPICM SOURCE SINK SR 2 BD7962FM =8Ω Unless otherwise specified, L Conditions 3 4 Under no load Under no load Under no load V V OFS =GND OM1 O V =GND OM1 O V =VB±0.5V, GVC=20log (VO/0.5) ...
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... RV6 RV5 ! ! ! ! Operation notes (1) BD7962FM has a built-in thermal shutdown circuit. When the chip temperature reaches 175°C (Typ.), the output current from all drivers is muted. When the chip temperature returns to 150°C (Typ.), the circuit of the driver unit starts up. (2) When the mute terminal (pin29) is opened or the terminal voltage is reduced to 0.5V or less, the output current of the BTL driver (CH1∼ ...
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... SUPPLY VOLTAGE : V 1 (V) CC Fig.5 Circuit current characteristic V 10 Opamp BIAS INPUT VOLTAGE : V ( Fig.8 Input output characteristic BD7962FM 1−0.7)/2V (pin28 SUPPLY VOLTAGE : Fig.6 Circuit current characteristic V ...
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... BIAS=2.5V, Ta=27°C 1.0 0.5 100 200 300 400 500 600 700 800 900 1000 0 3 −0.5 −1.0 −1.5 10 LOAD CURRENT : I (mA) O Fig.11 Output load current regulation +0.055 −0.045 BD7962FM V 2=V 3= 8Ω+47µH 5 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 −5 LDCONT VOLTAGE : V (V) CONT Fig.12 Input output characteristic ...