The LM4917 is a stereo, output capacitor-less headphone amplifier capable of delivering 95mW of continuous average power into a 16? load with less than 1% THD+N from a single 3V power supply.

The LM4917 provides high quality audio reproduction with minimal external components. A ground referenced output eliminates the output coupling capacitors typically required by single-ended loads, reducing component count, cost and board space consumption. This makes the LM4917 ideal for mobile phones and other portable equipment where board space is at a premium. Eliminating the output coupling capacitors also improves low frequency response.

The LM4917 operates from a single 1.4V to 3.6V power supply, features low 0.02% THD+N and 70dB PSRR. Independent right/left channel low-power shutdown controls provide power saving flexibility for mono/stereo applications. Superior click and pop suppression eliminates audible transients during start up and shutdown. Short circuit and thermal overload protection protects the device during fault conditions.

• Ground Referenced Outputs
• High PSRR
• Available in Space-Saving TSSOP Package
• Ultra Low Current Shutdown Mode
• Improved Pop and Click Circuitry eliminates Noises During Turn-On and Turn-Off Transitions
• 1.4 – 3.6V Operation
• No Output Coupling Capacitors, Snubber Networks, Bootstrap Capacitors
• Shutdown Either Channel Independently

Key Specifications

• Improved PSRR at 1kHz: 70dB (Typ)
• Power Output at VDD = 3V, RL = 16?, THD ≦ 1%: 95mW (Typ)
• Shutdown Current: 0.01μA (Typ)

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• Output power (W)
• 0.097
• Analog supply (Min) (V)
• 1.4
• Analog supply (Max) (V)
• 3.6
• PSRR (dB)
• 70
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 85
• Headphone channels
• Stereo
• Volume control
• No
• Shutdown current (ISD) (uA)
• 0.01
• Architecture
• Class-AB (ground-centered)
• Iq per channel (Typ) (mA)
• 5.5

LM4917的完整型号有：LM4917MT/NOPB、LM4917MTX/NOPB、LM4917SD/NOPB，以下是这些产品的关键参数及官网采购报价：

LM4917MT/NOPB，工作温度：-40 to 85，封装：TSSOP (PW)-14，包装数量MPQ：94个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM4917MT/NOPB的批量USD价格：1.396（1000+）

LM4917MTX/NOPB，工作温度：-40 to 85，封装：TSSOP (PW)-14，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM4917MTX/NOPB的批量USD价格：1.163（1000+）

LM4917SD/NOPB，工作温度：-40 to 85，封装：WSON (NHK)-14，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM4917SD/NOPB的批量USD价格：1.163（1000+）

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