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.
|Analog Supply (V) (Min)|
|Analog Supply (V) (Max)|
|Speaker Channels (Max)|
|Audio Input Type|
|Output Power (W)|
|Load (Min) (ohms)|
|Iq (Typ) (mA)|
|Iq (Max) (mA)|
|THD + N @ 1 kHz (%)|
|Iq per channel (Typ) (mA)|
|Package Size: mm2:W x L (PKG)|
|Operating Temperature Range (C)|
|Shutdown Current (ISD) (uA)|
|Class AB||Class D||Class D||Class D|
|Analog Input|| Analog Input |
| Analog Input |
|14HTSSOP||24VQFN||24VQFN|| 8MSOP-PowerPAD |
|14HTSSOP: 32 mm2: 6.4 x 5(HTSSOP)||24VQFN: 16 mm2: 4 x 4(VQFN)||24VQFN: 16 mm2: 4 x 4(VQFN)|| 8MSOP-PowerPAD: 15 mm2: 4.9 x 3(MSOP-PowerPAD) |
See datasheet (SON)
|-40 to 105||-40 to 105||-40 to 85|| -40 to 105 |
-40 to 85
|I2C||I2C, SPI|| I2C |