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參數(shù)資料
| 型號(hào)： | TDA8588J |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | I2C-bus controlled 4 x 50 Watt power amplifier and multiple voltage regulator |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PZFM37 |
| 封裝： | PLASTIC, SOT725-1, 37 PIN |
| 文件頁數(shù)： | 11/54頁 |
| 文件大?。?/td> | 283K |
| 代理商： | TDA8588J |
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2004 Feb 24
11
Philips Semiconductors
Product specification
I
2
C-bus controlled 4
×
50 Watt power
amplifier and multiple voltage regulator
TDA8588J; TDA8588xJ
VOLTAGE REGULATORS
The voltage regulator section contains:
Four switchable regulators and one permanent active
regulator
Two power switches with loss-of-ground protection
Reset push-pull output
Backup functionality.
The quiescent current condition has a very low current
level of 150
μ
A typical with only regulator 2 active. The
TDA8588 uses low dropout voltage regulators for use in
low voltage applications.
All of the voltage regulators except for the standby
regulator can be controlled via the I
2
C-bus. The voltage
regulator section of this device has two power switches
which are capable of delivering unregulated 400 mA
continuous current, and has several fail-safe protection
modes. It conforms to peak transient tests and protects
against continuous high voltage (24 V), short-circuits and
thermal stress. A reset warning signal is asserted if
regulator 2 is out of regulation. Regulator 2 will try to
maintain output for as long as possible even if a thermal
shut-down or any other fault condition occurs. During
overvoltage stress conditions, all outputs except
regulator 2 will switch off and the device will be able to
supply a minimum current for an indefinite amount of time
sufficient for powering the memory of a microcontroller.
Provision is made for an external reserve supply capacitor
to be connected to pin BUCAP which can store enough
energy to allow regulator 2 to supply a microcontroller for
a period long enough for it to prepare for a loss-of-voltage.
Regulator 2
Regulator 2 is intended to supply the microcontroller and
has a low quiescent current. This supply cannot be shut
down in response to overvoltage stress conditions, and is
notI
2
C-buscontrollabletopreventthemicrocontrollerfrom
being damaged by overvoltage which could occur during a
disturbance of the I
2
C-bus. This supply will not shut down
during load dump transients or during a high
thermal-protection condition.
Backup capacitor
The backup capacitor is used as a backup supply for the
regulator 2 output when the battery supply voltage (V
P
)
cannot support the regulator 2 voltage.
Backup function
The backup function is implemented by a switch function,
which behaves like an ideal diode between pins V
P
and BUCAP; the forward voltage of this ideal diode
depends on the current flowing through it. The backup
function supplies regulator 2 during brief periods when no
supply voltage is present on pin V
P
. It requires an external
capacitor to be connected to pin BUCAP and ground.
When the supply voltage is present on pin V
P
this
capacitorwillbechargedtoalevelofV
P
0.3 V.Whenthe
supply voltage is absent from pin V
P
, this charge can then
be used to supply regulator 2 for a brief period (t
backup
)
calculated using the formula:
Example: V
P
= 14.4 V, V
O(REG2)
= 5 V, R
L
= 1 k
and
C
backup
= 100
μ
F provides a t
backup
of 177 ms.
When an overvoltage condition occurs, the voltage on
pin BUCAP is limited to approximately 24 V; see Fig.5.
t
backup
C
backup
R
L
V
-----------------------------------------------0.5
V
V
O REG2
)
)
×
×
=
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|---|---|
| TDA8588J/N3 | 功能描述:音頻放大器 MULTI CHIP MODULE IPAS2.50 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 |
| TDA8588J/N3,112 | 功能描述:音頻放大器 MULTI CHIP MODULE 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 |
| TDA8589AJ | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:I2C-bus controlled 4 45 Watt power amplifier and multiple voltage regulator |
| TDA8589AJ/N3 | 功能描述:音頻放大器 POWER AMPL + STABI 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 |
| TDA8589AJ/N3,112 | 功能描述:音頻放大器 POWER AMPL + STABI 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 |
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