MAX8678
Overview
The MAX8678 integrates a charge pump for white lightemitting diodes (LEDs) with an audio loudspeaker amplifier. The high-efficiency, adaptive charge pump drives up to four LEDs with constant current for uniform brightness.
- High-Efficiency White LED Charge Pump Individual Adaptive Supply for Each LED 4 Low-Dropout LED Current Regulators 24mA to 0.1mA Dimming Range Single-Wire, Serial-Pulse Dimming Interface 1% (typ) Accuracy Low 140µA Quiescent Current
- Mono Class AB Audio Amplifier 1.1W RMS Mono BTL Output (8Ω, VIN = 5V) Low 0.004% THD+N at 1kHz High 90dB PSRR at 1kHz Fully Differential Inputs -9dB to +18dB Gain Settings in 3dB Steps Integrated Click/Pop Suppression Low Quiescent Current
- Soft-Start Limits Inrush Current
- Thermal Shutdown, Open- and Short-Circuit Protection
- 16-Pin, 3mm x 3mm Thin QFN Package MAX8678
