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參數(shù)資料
| 型號： | BD7905BFS |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | 6CH Power Driver for CD-ROM, DVD-ROM |
| 中文描述： | 6路功率驅(qū)動器為CD - ROM，DVD - ROM光碟 |
| 文件頁數(shù)： | 16/18頁 |
| 文件大?。?/td> | 202K |
| 代理商： | BD7905BFS |
BD7905BFS
Optical disc ICs
!
Operation notes
(1) Wiring for SPRNF and SLRNF
Considering the wiring resistance, connect each detecting resistor as close as possible to the current detection
terminals for the spindle drive SPRNF (pin 20) and the sled motor drive SLRNF 1 and 2 (pin 31 and 32) of the IC.
(2) Current detection reference voltage
The detection of current in the spindle and sled involves the detection of voltage between the detection resistances,
but as the reference voltage of internal circuit, the voltage applied to V
CC
(pin 51) is used by the spindle and that
applied to SLV
DD
(pin 30) by the sled.
For this reason, be sure to apply V
CC
(pin 51) to the spindle and SLV
DD
(pin 30) to the sled according to the
corresponding power supply voltages to prevent voltage differences.
(3) Filtering capacitor
It is recommended to connect 0.01
μ
F filtering capacitor to SPCNF terminals. This capacitor filters PWM output carrier
frequency. Dispersion of the cut off frequency due to circuit board wiring layout is taken into consideration.
If it is difficult to filter at the recommended value due to circuit board wiring led round, the capacity can be increased.
In this case, note that the output transmission delay time may be longer.
(4) Bypass capacitor
Please connect a bypass capacitor (0.1
μ
F) across the supply voltage lines close to the IC pins.
(5) Supply fault, ground fault, and short-circuit between output terminals
Do not short-circuit between any output pin and supply pin (supply fault) or ground (ground fault), or between any
output pins (load short-circuit). When mounting the IC on the circuit board, be extremely cautions about the
orientation of the IC. If the orientation is mistaken, the IC may break down, and produce smoke in some cases.
!
Electrical characteristic curves
16/17
0
100
75
50
25
125
150
2
0
1
3
P
AMBIENT TEMPERATURE : Ta (
°
C)
70
×
70mm
2
, t
=
1.6mm glass epoxy mounting.
2.6W
Fig.4 Power dissipation
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BD7905BFS-E2 | 制造商:ROHM Semiconductor 功能描述:6CH POWER DRIVER FOR CD-ROM, DVD-ROM - Tape and Reel 制造商:ROHM Semiconductor 功能描述:IC PWR DRIVER 6CH DISC 54-HSSOP 制造商:ROHM Semiconductor 功能描述:CD-ROM DVD-ROM POWER DRIVER 6CH |
| BD7907FS | 制造商:ROHM 制造商全稱:Rohm 功能描述:6-channel Combo driver IC |
| BD7909FS-E2 | 制造商:ROHM Semiconductor 功能描述:MOTOR DRIVER - Tape and Reel |
| BD791 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| BD791/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:NPN Plastic Silicon Power Transistor |
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