Datasheet Details
| Part number | AT9919 |
|---|---|
| Manufacturer | Microchip Technology |
| File Size | 532.81 KB |
| Description | Hysteretic Buck High-Brightness LED Driver |
| Datasheet |
 AT9919 Datasheet
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General Description
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 VDC to 40 VDC and employs hysteretic control with a high-side current sense resistor to set the constant output current.
Key Features
- AEC-Q100 Qualified.
- Hysteretic Control with High-side Current Sensing.
- Wide Input Voltage Range: 4.5V to 40V.
- >90% Efficiency.
- Typical ±5% LED Current Accuracy.
- Up to 2 MHz Switching Frequency.
- Adjustable Constant LED Current.
- Analog or Pulse-Width Modulation (PWM) Control Signal for PWM Dimming.
- Overtemperature Protection.
- 40ºC to +125ºC Operating Temperature Range.
