The LM48100Q-Q1 is a single supply, mono, bridge-tied load amplifier with I²C volume control, ideal for automotive applications. A comprehensive output fault detection system senses the load conditions, protecting the device during short circuit events, as well as detecting open circuit conditions.

Operating from a single 5-V supply, the LM48100Q-Q1 delivers 1.3 W of continuous output power to an 8 Ω load with < 1% THD+N. Flexible power supply requirements allow operation from 3 V to 5.5 V. High power supply rejection ratio (PSRR), 74 dB at 1 kHz, allows the device to operate in noisy environments without additional power supply conditioning.

The LM48100Q-Q1 features dual audio inputs that can be mixed/multiplexed to the device output. Each input path has its own independent, 32-step volume control. The mixer, volume control and device mode select are controlled through an I²C compatible interface. An open drain FAULT output indicates when a fault has occurred. Comprehensive output short circuit and thermal overload protection prevent the device from being damaged during a fault condition.

A low power shutdown mode reduces supply current consumption to 0.01 µA. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM48100Q-Q1 is available in an 14-pin HTSSOP PowerPAD™ IC package.

• Output Fault Detection
• I2C Volume and Mode Control
• Input Mixer and Multiplexer
• High PSRR
• Individual 32-Step Volume Control
• Short Circuit and Thermal Protection
• Advanced Click-and-Pop Suppression
• Low-Power Shutdown Mode
• Available in 14-Pin HTSSOP Package
• Key Specifications:
  • Output Power at VDD = 5 V, RL = 8 Ω, THD+N ≤ 1% 1.3 W (Typical)
  • Quiescent Power Supply Current at 5 V, 6 mA (Typical)
  • PSRR at 1 kHz 74 dB (Typical)
  • Shutdown current 0.01 μA (Typical)

• Audio input type
• Analog Input
• Architecture
• Class-AB
• Speaker channels (Max)
• Mono
• Power stage supply (Max) (V)
• 5.5
• Power stage supply (Min) (V)
• 3
• Load (Min) (ohms)
• 8
• Output power (W)
• 2.4
• SNR (dB)
• 104
• THD + N @ 1 kHz (%)
• 0.04
• Iq (Typ) (mA)
• 4.4
• Control interface
• I2C
• Closed/open loop
• Closed
• Analog supply (Min) (V)
• 3
• Analog supply (Max) (V)
• 5.5
• PSRR (dB)
• 74
• Operating temperature range (C)
• -40 to 105

LM48100Q-Q1的完整型号有：LM48100QMH/NOPB、LM48100QMHE/NOPB、LM48100QMHX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM48100QMH/NOPB，工作温度：-40 to 105，封装：HTSSOP (PWP)-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LM48100QMH/NOPB的批量USD价格：1.058（1000+）

LM48100QMHE/NOPB，工作温度：-40 to 105，封装：HTSSOP (PWP)-14，包装数量MPQ：250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LM48100QMHE/NOPB的批量USD价格：1.058（1000+）

LM48100QMHX/NOPB，工作温度：-40 to 105，封装：HTSSOP (PWP)-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LM48100QMHX/NOPB的批量USD价格：.905（1000+）

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