參數(shù)資料
型號(hào)： TB2923HQ
元件分類： 音頻／視頻放大
英文描述： 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25
封裝： 1 MM PITCH, PLASTIC, HZIP-25
文件頁(yè)數(shù)： 11/17頁(yè)
文件大小： 298K
代理商： TB2923HQ
TB2923HQ
2006-11-30
3
Detailed Description
1.
Standby Switch (pin 4)
The power supply can be turned on or off via
pin 4 (Stby). The threshold voltage of pin 4 is
set at about 3 VBE (typ.). The power supply
current is about 0.01
A (typ.) in the standby
state.
Standby Control Voltage (VSB): Pin 4
Standby
Power
VSB (V)
ON
OFF
0 to 0.9
OFF
ON
2.9 to VCC
Check the pop levels when the time constant of
pin 4 is changed.
Benefits of the Standby Switch
(1)
VCC can be directly turned on or off by a microcontroller, eliminating the need for a switching relay.
(2)
Since the control current is minuscule, a low-current-rated switching relay can be used.
Figure 2
Standby Switch
VCC
Low-current-rated switch
Battery
Standby
VCC
From microcontroller
Battery
Standby
– Using the Standby Switch –
– Conventional Method –
VCC
High-current-rated switch
Battery
VCC
From
microcontroller
Battery
Relay
Figure 1
Setting Pin 4 High Turns on
Power
ON
4
OFF
10 k
to Bias
filter network
≈ 2 VBE
VCC
Power
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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TB2924FG 制造商:Toshiba 功能描述:CLASS-D AUDIO POWER AMPLIFIER
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TB2926CHQ 功能描述:音頻放大器 4-Ch BTL PWR AMP Pout MAX 49W RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TB2929 制造商:Toshiba 功能描述:Four-Channel BTL power amplifier for Car Audio appliciton 4X47w
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