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