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參數(shù)資料
| 型號(hào)： | NCP2830MUTXG |
| 廠商： | ON Semiconductor |
| 文件頁(yè)數(shù)： | 3/15頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO CLASS D 20UQFN |
| 產(chǎn)品變化通告： | Product Obsolescence 24/Jan/2011 |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 類型： | D 類 |
| 輸出類型： | 1-通道（單聲道） |
| 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： | 1.2W x 1 @ 8 歐姆 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 特點(diǎn)： | 差分輸入，關(guān)閉 |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 20-UQFN（3x3） |
| 封裝/外殼： | 20-UFQFN 裸露焊盤 |
| 包裝： | 帶卷 (TR) |
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NCP2830
http://onsemi.com
11
DETAIL OPERATING DESCRIPTION
C3
2.2mF
C4
2.2mF
AGND
OUTM
C1
4.7mF
OUTP
PGND_D
0
PWM
C2
4.7mF
Modulator
0
FSW1
VBOUT
0
+
0
GS
0
GS
Vref
C5
10mF
AVDD
C6
10mF
Vref
FSW1
FSW2
0
PGND_CP
0
+
WM
0
WM
+
OUT
0
ANALOG
VB_out
PVDD
VB_out
0
VB_out
RES2
7.5k
VB_in
7.5k
VB_in
RES1
15k
VBIN
CHARGE PUMP
SWITCHES
MATRIX
7.5k
INM
INP
Mode
0
FSW2
SD
Figure 25. Functional Block Diagram
Detailed Descriptions
The NCP2830 consists of two parts: a DCDC converter
and a mono class D amplifier. These two parts are strongly
matched in order to obtain the best operation of the global
system.
DCDC CONVERTER
The DCDC converter is based on a charge pump
technique. The switching frequency is synchronized with
the class D amplifier (FSW2 = 2 x FSW1) in order to avoid
mixing frequency. The regulation is based on a voltage
regulation. The output voltage is permanently monitored
through a resistor ladder and compared to an internal
reference. An error amplifier and a voltage to current
conversion allow injecting in the Capacitors C3 and C4 the
necessary current to maintain 5 V in output. This linear
regulation reduces the output voltage ripple (7 mV typ) and
allows a noise free operation.
Turn ON/OFF sequence
The turn ON and turn OFF sequence has been adapted to
an audio applications environment. When the battery
voltage is connected to the VDD pins, the output capacitance
is precharged to the VDD voltage. When VSD is High, the
charge pump is activated and the output voltage rises up to
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| NCP2830MUTXGEVB | 功能描述:BOARD EVAL NCP2830 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 音頻放大器 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| NCP2860 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators |
| NCP2860/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:300 mA Very Low Noise LDO |
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| NCP2860DM277R2 | 功能描述:低壓差穩(wěn)壓器 - LDO 2.77V or ADJ 300mA RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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