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MAX8678 Datasheet White Led Charge Pump

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: www.DataSheet4U.com 19-0786; Rev 0; 4/07 White LED Charge Pump with 1.

General Description

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.

The LED current is adjustable from 0.1mA/LED to 24mA/LED in 31 pseudo-logarithmic steps through a single-wire serial-pulse interface.

Key Features

  • 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.

More Datasheets from Maxim Integrated (now Analog Devices)

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MAX8606 Li+ Linear Battery Charger
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MAX8614A (MAX8614A / MAX8614B) Dual-Output (+ and -) DC-DC Converters
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MAX8678 Distributor