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| 型号： | LM4872IBP |
| 厂商： | National Semiconductor |
| 文件页数： | 13/17页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 1W MONO 8USMD |
| 标准包装： | 1 |
| 系列： | Boomer® |
| 类型： | AB 类 |
| 输出类型： | 1-通道（单声道） |
| 在某负载时最大输出功率 x 通道数量： | 1W x 1 @ 8 欧姆 |
| 电源电压： | 2 V ~ 5.5 V |
| 特点： | 关闭，热保护 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 8-uSMD |
| 封装/外壳： | 8-VFBGA |
| 包装： | 剪切带 (CT) |
| 其它名称： | *LM4872IBP LM4872IBPCT |
Electrical Characteristics V
The following specifications apply for V
DD = 2.6V and 8
Load unless otherwise specified. Limits apply for T
A =
25C. (Continued)
Symbol
Parameter
Conditions
LM4872
Units
(Limits)
Typical
Limit
V
OS
Output Offset Voltage
V
IN = 0V
5
mV (max)
P
0
Output Power ( 8
)
Output Power ( 4
)
THD = 0.3% (max);f=1kHz THD
= 0.5% (max);f=1kHz
0.25
0.5
W
THD+N
Total Harmonic Distortion+Noise
P
o = 0.25 Wrms; AVD =2;20Hz
≤
f
≤ 20 kHz
0.25
%
PSRR
Power Supply Rejection Ratio
V
DD = 2.5V to 2.7V
65
dB
Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given, however, the typical value is a good indication of device performance.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature TA. The maximum
allowable power dissipation is PDMAX =(TJMAX–TA)/θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4872, TJMAX = 150C.
The typical junction-to-ambient thermal resistance is 150C/W.
Note 4: Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 5: Machine Model, 220 pF–240 pF discharged through all pins.
Note 6: Typicals are measured at 25C and represent the parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Low Voltage Circuit - See Fig. 4
Note 9: Shutdown current is measured in a Normal Room Environment. Exposure to direct sunlight will increase ISD by a maximum of 2A.
External Components Description
(Figure 1)
Components
Functional Description
1.
R
i
Inverting input resistance which sets the closed-loop gain in conjunction with R
f. This resistor also forms a
high pass filter with C
i at fC= 1/(2
π R
iCi).
2.
C
i
Input coupling capacitor which blocks the DC voltage at the amplifiers input terminals. Also creates a
highpass filter with R
i at fc = 1/(2
π R
iCi). Refer to the section, Proper Selection of External Components,
for an explanation of how to determine the value of C
i.
3.
R
f
Feedback resistance which sets the closed-loop gain in conjunction with R
i.
4.
C
S
Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
5.
C
B
Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of External
Components, for information concerning proper placement and selection of C
B.
LM4872
www.national.com
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4872IBPX | 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4872ITP | 制造商:Texas Instruments 功能描述:AMP AUDIO 1W BOOMER SMD 4872 |
| LM4872ITP/NOPB | 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4872ITPX/NOPB | 制造商:Texas Instruments 功能描述: |
| LM4873 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
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