LM386N-4/NOPB


1W Low Voltage Audio Power Amplifier, 5-18V supply, gain 20-200, PDIP-8

6377

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制造商零件:

LM386N-4/NOPB

包装:

PDIP-8 (9.7 x 6.35 x 4.57 mm)

品牌:
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说明

产品概览

The LM386N-4/NOPB is a low voltage audio power amplifier manufactured by Texas Instruments. It is designed for battery-powered consumer audio applications, delivering 1W output into an 8-ohm load from a 16V supply. The device operates over a wide supply voltage range of 5V to 18V with very low quiescent current drain, making it ideal for portable and battery-operated audio systems.

主要规格

Supply Voltage Range 5V to 18V
Output Power 1W (Vdd=16V, RL=8ohm)
Voltage Gain 20 to 200 (adjustable)
静态电流 4mA typical
Input Impedance 50kohm
Bandwidth 300kHz at gain=20
工作温度 0C to 70C
包装 PDIP-8

特点

  • Battery operation with minimum 5V supply
  • Externally adjustable gain from 20 to 200
  • Very low quiescent current drain (4mA)
  • Ground-referenced input
  • Self-centering output quiescent voltage
  • Low distortion at output power
  • Minimal external components required

应用

  • AM/FM radio amplifiers
  • Portable audio devices and speakers
  • Intercom and walkie-talkie systems
  • TV sound systems
  • Ultrasonic drivers and small servo drivers

The LM386N-4/NOPB is a low voltage audio power amplifier produced by Texas Instruments. It is optimized for battery-powered consumer audio applications requiring 1W output power. Operating from a single 5V to 18V supply, the device features adjustable voltage gain from 20 to 200 using external resistors and a capacitor. The very low quiescent current of 4mA and minimal external component count make it a popular choice for portable audio amplification in consumer electronics.

The LM386 operates as a class AB audio amplifier with an internally set gain of 20 (26dB). The gain can be increased to 200 (46dB) by connecting a capacitor between pins 1 and 8. The internal circuitry consists of a differential input pair, gain-setting network, and a push-pull output stage. The output is self-centering at half the supply voltage, eliminating the need for output coupling capacitors in many applications. The ground-referenced input allows direct coupling from signal sources.

针脚 名称 类型 功能
1 GAIN 控制 Gain adjust (connect capacitor to pin 8 for higher gain)
2 IN- 输入 Inverting input
3 IN+ 输入 Non-inverting input
4 接地 电源 地面
5 Vout 输出 Audio output
6 Vs 电源 Supply voltage (5-18V)
7 BYPASS 控制 Bypass capacitor for ripple rejection
8 GAIN 控制 Gain adjust (connect capacitor to pin 1)
  • Portable speaker and radio audio amplification
  • Intercom and two-way communication systems
  • TV and monitor sound output stages
  • Ultrasonic transducer drivers
  • Small motor and servo control drivers
制造商 部件编号 包装 说明
德州仪器 LM386N-3/NOPB PDIP-8 0.5W version, 4-12V supply
德州仪器 LM386M-1/NOPB SOIC-8 325mW, SMD version
onsemi MC34119 SOIC-8 Low voltage audio amp
ROHM BA4560 SIP-8 Dual audio op-amp alternative
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认证
我们获得了多项专业认证,并建立了自己的专业检测实验室,确保交付给客户的每一件产品都符合最高质量要求。我们严格按照流程进行检测,确保产品质量稳定、参数准确。为保证原装正品,我们还与可靠的第三方检测机构合作,进行严格的质量检测。我们始终高度重视质量,完全符合行业标准、相关法规和 ISO 9001:2015 的要求。.

服务与包装

我们从合作供应链采购的所有电子元件都经过严格的进货检验。通过仔细的测试,我们确保交付给客户的所有产品都是原装正品,符合质量要求。此外,我们还保存完整的检验记录,使整个供应链流程清晰可查。.

认证
我们获得了多项专业认证,并建立了自己的专业检测实验室,确保交付给客户的每一件产品都符合最高质量要求。我们严格按照流程进行检测,确保产品质量稳定、参数准确。为保证原装正品,我们还与可靠的第三方检测机构合作,进行严格的质量检测。我们始终高度重视质量,完全符合行业标准、相关法规和 ISO 9001:2015 的要求。.