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參數(shù)資料
| 型號(hào)： | LB11691 |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 0.05 A, PDIP36 |
| 封裝： | 0.400 INCH, DIP-36 |
| 文件頁(yè)數(shù)： | 11/19頁(yè) |
| 文件大?。?/td> | 204K |
| 代理商： | LB11691 |
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TDF8546
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3 — 30 August 2011
19 of 61
NXP Semiconductors
TDF8546
I2C-bus controlled 4
45 W best efficiency amplifier
The load diagnostic is insensitive to door-slam (slowly moving speaker due to slamming of
the car door) and to external interference such as crosstalk of relays switching in the
wiring harness; see Figure 14.
The load detection values are shown in Figure 15.
If only 4
speakers are connected, the low gain mode can be selected during the start-up
diagnostics. A shorted load is indicated until an impedance of 1.5
is reached. Even ‘soft’
shorts in the wiring harness will be detected.
Fig 14. Principle of start-up diagnostics
Fig 15. Start-up diagnostics load detection levels
COMPARATORS
SPIKE
FILTER
DOOR-SLAM
PROCESSOR
OFFSET
GENERATOR
I2C-BUS BITS
LOAD CONDITION
001aam697
out +
out
SHORTED
NORMAL
LINE DRIVER
OPEN
0.5
Ω
1.5
Ω
high gain
low gain
1.5
Ω
3.2
Ω
20
Ω
20
Ω
80
Ω
80
Ω
200
Ω
200
Ω
400
Ω
400
Ω
001aaam698
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