BD7904FS ROHM Co. Ltd., BD7904FS Datasheet
BD7904FS
Related parts for BD7904FS
BD7904FS Summary of contents
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Parameter Symbol POWER MOS SPVM1,2,SLRNF power suuply voltage Preblock/BTL powerblock V ,SLVDD,AVM CC power supply voltage PWM control block, REG power supply voltage Power dissipation Operating temperature ...
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Parameter POWER MOS Power supply voltage 1 POWER MOS Power supply voltage 2 Preblock Power supply voltage Power block Power supply voltage PWM control block, REG Power supply voltage Spindle output current SL/FO/TR/LO output current ∗3 ...
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Pin No. Pin name Function 1 HU+ Hall amp. U positive input 2 HU− Hall amp. U negative input 3 HV+ Hall amp. V positive input 4 HV− Hall amp. V negative input 5 SPVM1 Spindle ...
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Three-phase motor driver output Hall signal input 25pin 25pin PWM driver output SLED BTL driver input FO, TK 44pin 44pin ...
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Control signal reference voltage input 44pin 10kΩ 15kΩ 19 Regulator output 25pin 25pin ×30 25pin 20kΩ 26 Control signal input 25pin 25pin 50kΩ 50kΩ 50kΩ PWM driver input LOADING 44pin 50kΩ 53 50kΩ 20kΩ Regulator REGNF terminal 51.5kΩ ...
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Parameter Symbol Circuit current Quiescent current 1 IQ1 Quiescent current 2 IQ2 Quiescent current 3 IQ3 Standby-on current 1 IST1 Standby-on current 2 IST2 Spindle driver block 〈 Hall bias 〉 Hall bias voltage VHB ...
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Parameter Symbol Sled/Actuator driver pre-operational amplifier block Input offset voltage VOFOP Input bias current IBOP Common mode input range VICM Output source current IOSOOP Output sink current IOSIOP "H" level output voltage VOHOP "L" level output voltage VOLOP Loading driver ...
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SLVM V SW- OPAMP OUT-A1 VFGH V A1 100k LDIN − PRE LOGIC + − FF OSC LIMIT REVERSE FG DETECT ...
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OPAMP OPOUT OPIN− SW-OP 2 30k 1 30k IOP V VOOP A IOPB IN− OUT SW-RL 47µ SW-IL SW- ∗A2, A3, and A4 require no coil. (47µH) OUTSP ...
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INPUT CTL Designation VIN Circuit current IQ1 − IQ2 − IQ3 − − IST1 L L ...
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INPUT CTL Designation VIN Spindle driver block 〈 Hall bias 〉 VHB 1.65V 〈 Hall amplifier 〉 IHIB 1.65V 〈 ...
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INPUT CTL Designation VIN Actuator driver block VOFFT 1.65V 3.3V VOHFT (0V) 0V VOLFT (3.3V) GVFT ...
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CTL1 CTL2 Spindle (Pin8) (Pin9 − H CTL1 CTL2 SPIN > VC (Pin8) (Pin9 Forward-rotation mode H H Forward-rotation mode Sled Focus Tracking Loading SPIN < VC Reverse-rotation braking mode ...
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HU+ HU− FWD HV+ HV− HW+ HW− SPIN Vref SOURCE U Hi-Z SINK SOURCE V Hi-Z SINK SOURCE W Hi-Z SINK Forward rotation mode FWD REV ...
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Hall amplifier input (forward rotation) HU+ HU− HV ΙΙ ΙΙΙ < Hall ...
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SPRNF SLRNF VC Gain expression Input-output gain gm (A/V) Output-limit current Ilim (A) Gain with the added resistor gm (A/V) OUT1=BG{R1 (R2+R3+R4) +R2 (R3+R4)}/R2R4 FWD rotation Dead zone + Dead zone − SPIN SLIN1, 2 Spindle Sled 1.0/RNF 0.5/RNF 0.3/RNF ...
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SLED SLVM=12V IN SLED LOADING − PRE LEVEL LOGIC SHIFT + − FF OSC LIMIT REVERSE FG DETECT STBY/ BRAKE CONTROL 1 2 ...
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AMBIENT TEMPERATURE : Ta (°C) ∗ On less than 25.7% (percentage occupied by copper foil), 70×70mm2, t=1.6mm glass epoxy mounting. ...