AA1700 Datasheet - Agamem Microelectronic

AA1700 - Constant Current White LED driver

Pin No.

1 2 3 4 5 6 7 8 Symbol IN SP VCC CTL P0 GND CLK ER I/O I * * I O * * O Output voltage feedback pin AA1700 Constant Current White LED driver Description Soft start and short circuit protection setting Power supply pin ON/OFF control pin Output driver pin Gro

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PRELIMINARY OVERVIEW AA1700 Constant Current White LED driver The AA1700 is a high frequency boost DC/DC converter with constant current output that drives white LEDs or similar.

The LED current is set with the external resistor.

Soft start circuitry prevents excessive current drawn from the supply during power on.

Any number of LEDs can be connected in series as long as the summed forward voltages do not lead to exceed the specified operating

AA1700 Features

* Drives Up to 8 LEDs in Series.

* Second or more string of LEDs can be added.

* Low current consumption: Typically 5.5 mA in operation, 1 µA or less in stand-by.

* PWM mode operation of the boost circuit (frequency range: 10 kHz to 1 MHz).

* Incorporates a so

AA1700_AgamemMicroelectronic.pdf