- 制造厂商：TI
- 产品类别：音频
- 技术类目：音频放大器 - 扬声器放大器
- 功能描述：3.1W 单声道、9.6V 至 16V 电源电压、模拟输入 D 类音频放大器
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The LM4950 is a dual audio power amplifier primarily designed for demanding applications in flat panel monitors and TV's. It is capable of delivering 3.1 watts per channel to a 4? single-ended load with less than 1% THD+N or 7.5 watts mono BTL to an 8? load, with less than 10% THD+N from a 12VDC power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4950 does not require bootstrap capacitors or snubber circuits. Therefore, it is ideally suited for display applications requiring high power and minimal size.
The LM4950 features a low-power consumption active-low shutdown mode. Additionally, the LM4950 features an internal thermal shutdown protection mechanism along with short circuit protection.
The LM4950 contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.
The LM4950 is a unity-gain stable and can be configured by external gain-setting resistors.
- Pop & Click Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions
- Low Current, Active-Low Shutdown Mode
- Low Quiescent Current
- Stereo 3.1W Output, RL = 4?
- Mono 7.5W BTL Output, RL = 8?
- Short Circuit Protection
- Unity-Gain Stable
- External Gain Configuration Capability
- Quiescent Power Supply Current 16mA (typ)
- ?POUT (SE)
- VDD = 12V, RL = 4?, 1% THD+N: 3.1W (typ)
- ?POUT (BTL)
- VDD = 12V, RL = 8?, 10% THD+N: 7.5W (typ)
- Shutdown Current 40μA (typ)
All trademarks are the property of their respective owners.
- Audio input type
- Analog Input
- Architecture
- Class-AB
- Speaker channels (Max)
- Stereo
- Power stage supply (Max) (V)
- 16
- Power stage supply (Min) (V)
- 9.6
- Load (Min) (ohms)
- 4
- Output power (W)
- 7.5
- THD + N @ 1 kHz (%)
- 0.03
- Iq (Typ) (mA)
- 16
- Control interface
- Hardware
- Closed/open loop
- Open
- Analog supply (Min) (V)
- 9.6
- Analog supply (Max) (V)
- 16
- PSRR (dB)
- 70
- Operating temperature range (C)
- -40 to 85
LM4950的完整型号有：LM4950TS、LM4950TS/NOPB、LM4950TSX/NOPB，以下是这些产品的关键参数及官网采购报价：
LM4950TS，工作温度：-40 to 85，封装：DDPAK/TO-263 (KTW)-9，包装数量MPQ：45个，MSL 等级/回流焊峰值温度：Level-3-235C-168 HR，引脚镀层/焊球材料：SNPB，TI官网LM4950TS的批量USD价格：1.491（1000+）
LM4950TS/NOPB，工作温度：-40 to 85，封装：DDPAK/TO-263 (KTW)-9，包装数量MPQ：45个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LM4950TS/NOPB的批量USD价格：1.278（1000+）
LM4950TSX/NOPB，工作温度：-40 to 85，封装：DDPAK/TO-263 (KTW)-9，包装数量MPQ：500个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LM4950TSX/NOPB的批量USD价格：1.065（1000+）
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