AT9919 Datasheet High Brightness Led Driver

Manufacturer: Supertex

Overview: Supertex inc. AT9919 Hysteretic, Buck, High Brightness LED Driver with High-Side Current.

Datasheet Details

Part number	AT9919
Manufacturer	Supertex
File Size	346.64 KB
Description	High Brightness LED Driver
Datasheet	AT9919-Supertex.pdf

General Description

The AT9919 is a PWM controller IC designed to drive high brightness LEDs using a buck topology.

It operates from an input voltage of 4.5 to 40VDC and employs hysteretic control with a high-side current sense resistor to set the constant output current.

The operating frequency range can be set by selecting the proper inductor.

Key Features

Hysteretic control with high-side current sensing.
Wide input voltage range: 4.5 to 40V.
>90% Efficiency.
Typical ±5% LED current accuracy.
Up to 2.0MHz switching frequency.
Adjustable constant LED current.
Analog or PWM control signal for PWM dimming.
Over-temperature protection.
-40ºC to +125ºC operating temperature range.
AEC-Q100 compliant.

AT9919 Distributor

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