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PDF ( 数据手册 , 数据表 ) NS4263

零件编号 NS4263
描述 3W Stereo Class AB Audio Amplifier + Stereo Headset
制造商 Nsiway
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NS4263 数据手册, 描述, 功能
NS4263
AB类/D类切换、超低EMI、无需滤波器、3W双声道音频功放+立体声耳机功能
目录
1 功能说明 ........................................................................................................................................................... 3
2 主要特性 ........................................................................................................................................................... 3
3 应用领域 ........................................................................................................................................................... 3
4 典型应用电路.................................................................................................................................................... 3
5 极限参数 ........................................................................................................................................................... 4
6 电气特性 ........................................................................................................................................................... 4
7 芯片管脚描述.................................................................................................................................................... 5
7.1 SOP16 封装管脚分配图 ................................................................................................................... 5
7.2 TSSOP20 封装管脚分配图............................................................................................................... 6
7.3 引脚功能描述 ................................................................................................................................... 7
8 NS4263 典型参考特性...................................................................................................................................... 7
9 NS4263 应用说明............................................................................................................................................ 11
9.1 芯片基本结构描述 ......................................................................................................................... 11
9.2 NS4263 工作模式 ........................................................................................................................... 12
9.3 上电 ,掉电噪声抑制 ....................................................................................................................... 13
9.4 EMI增强技术 .................................................................................................................................. 14
9.5 效率 ................................................................................................................................................. 14
9.6 保护电路 ......................................................................................................................................... 14
10 NS4263 应用注意事项 .................................................................................................................................. 14
11 芯片的封装尺寸图 ........................................................................................................................................ 16
11.1 SOP16 封装尺寸图 ......................................................................................................................... 16
11.2 TSSOP20 封装尺寸图inches (millimeters)..................................................................................... 17
Nsiway
http://www.junyi-ic.com TEL:0755-29955070 FAX:0755-27858707
1
Free Datasheet http://www.datasheet-pdf.com/







NS4263 pdf, 数据表
NS4263
AB类/D类切换、超低EMI、无需滤波器、3W双声道音频功放+立体声耳机功能
POWER DISSIPATION vs OUTPUT POWER(4Ω)
2
1.8
1.6
1.4
1.2 ClassD/VDD=3.6V
1
ClassD/VDD=4.2V
ClassAB/VDD=3.6V
0.8 ClassAB/VDD=4.2V
0.6
0.4
0.2
0
0 0.4 0.8 1.2 1.6 2 2.4
Output Power(W)
POWER DISSIPATION vs OUTPUT POWER(8Ω)
1
0.9
0.8
0.7
0.6 ClassD/VDD=3.6V
0.5 ClassD/VDD=4.2V
ClassAB/VDD=3.6V
0.4 ClassAB/VDD=4.2V
0.3
0.2
0.1
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
Output Power(W)
SUPPLY CURRENT vs OUTPUT POWER(4Ω)
1.2
1.08
0.96
0.84
0.72
0.6
0.48
0.36
ClassD/VDD=3.6V
ClassD/VDD=4.2V
ClassAB/VDD=3.6V
ClassAB/VDD=4.2V
0.24
0.12
0
0 0.4 0.8 1.2 1.6 2 2.4
Output Power(W)
SUPPLY CURRENT vs OUTPUT POWER(8Ω)
0.8
0.7
0.6
0.5
ClassD/VDD=3.6V
0.4 ClassD/VDD=4.2V
ClassAB/VDD=3.6V
0.3 ClassAB/VDD=4.2V
0.2
0.1
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
Output Power(W)
THD vs FREQUENCY(4Ω/ClassD)
1
THD vs FREQUENCY(8Ω/ClassD)
1
0.1
VDD=5.0V/Po=1.0W
VDD=5.0V/Po=0.25W
VDD=3.6V/Po=0.5W
VDD=3.6V/Po=0.25W
0.01
10
100 1000 10000
Frequency(Hz)
100000
0.1
VDD=5.0V/Po=1.0W
VDD=5.0V/Po=0.125W
VDD=3.6V/Po=0.5W
VDD=3.6V/Po=0.125W
0.01
10
100 1000 10000
Frequency(Hz)
100000
Nsiway
http://www.junyi-ic.com TEL:0755-29955070 FAX:0755-27858707
8
Free Datasheet http://www.datasheet-pdf.com/







NS4263 equivalent, schematic
NS4263
AB类/D类切换、超低EMI、无需滤波器、3W双声道音频功放+立体声耳机功能
11 芯片的封装尺寸图
11.1 SOP16 封装尺寸图
10 SOP16 封装尺寸图
Nsiway
http://www.junyi-ic.com TEL:0755-29955070 FAX:0755-27858707
16
Free Datasheet http://www.datasheet-pdf.com/










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