Datasheet Diodes AL8843QSP-13 — 数据表

AL8843Q
AUTOMOTIVE COMPLIANT 40V 3A STEP-DOWN LED DRIVER Description Pin Assignments
(Top View) The AL8843Q is a hysteresis mode DC-DC step-down converter,
designed for driving single or multiple series connected LEDs
efficiently from a voltage source higher than the LED voltage. The
device can operate from an input supply between 4.5V and 40V and
provide an externally adjustable output current up to 3A. Depending
upon supply voltage and external components, this converter can
provide up to 60W of output power.
The AL8843Q integrates the power switch and a high-side output
current sensing circuit, which uses an external resistor to set the
nominal average output current. 8 SW 7 SW 3 6 VIN 4 5 CTRL GND 1 GND 2 SET
NC EP SO-8EP Dimming can be realized by applying an external control signal to the
CTRL pin. The CTRL pin will accept either a DC voltage signal or a
PWM signal.
The soft-start time can be adjusted by an external capacitor from the
CTRL pin to Ground. Applying a voltage of 0.3V or lower to the CTRL
pin will shut down the power switch.
The AL8843Q is available in the thermally enhanced SO-8EP package
and automotive compliant, qualified to AEC-Q100 Grade 1, supports
PPAP documentations. Applications
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