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參數(shù)資料
| 型號(hào)： | TPA005D14DCAR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO48 |
| 封裝： | PLASTIC, HTSSOP-48 |
| 文件頁數(shù)： | 25/30頁 |
| 文件大?。?/td> | 492K |
| 代理商： | TPA005D14DCAR |
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TPA005D14
2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS240A – AUGUST 1999 – REVISED MARCH 2000
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Class-D amplifier faults
Table 1. Class-D Amplifier Fault Table
FAULT 0
FAULT 1
DESCRIPTION
1
No fault. — The device is operating normally.
0
1
Charge pump under-voltage lock-out (VCP-UV) fault — All low-side transistors are turned on, shorting the load to
ground. Once the charge pump voltage is restored, normal operation resumes, but FAULT1 is still active. FAULT1 is
cleared by cycling MUTE, SHUTDOWN, or the power supply.
1
0
Over-current fault — The output transistors are all switched off. This causes the load to be in a high-impedance state.
This is a latched fault and is cleared by cycling MUTE, SHUTDOWN, or the power supply.
0
Thermal fault — All the low-side transistors are turned on, shorting the load to ground. This is latched fault and is
cleared by cycling MUTE, SHUTDOWN, or the power supply.
These logic levels assume a pullup to PVDD from the open-drain outputs.
headphone amplifier faults
The thermal fault remains active when the device is in head phone mode. This fault operates exactly the same
as it does for the Class-D amplifier (see Table 1).
If LPVDD or RPVDD drops below 4.5 V, the headphone is disabled by the under-voltage lockout circuitry. Once
LPVDD and RPVDD exceed 4.5 V, the headphone amplifier is re-enabled. No fault is reported to the user.
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
TSSOP
(DCA)
–40
°C to 125°C
TPA005D14DCA
The DCA package is available in left-ended tape and reel. To order
a taped and reeled part, add the suffix R to the part number (e.g.,
TPA005D14DCAR).
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