Kinetic Technologies KTD2041 9-Ch IR LED Driver
Kinetic Technologies KTD2041 9-Ch IR LED Driver offers an integrated buck regulator, creating an ideal power solution. The driver provides 9 high-precision current sinks that can be independently controlled through the I2C interface. The buck regulator has an input voltage operating range from 2.7V to 5.5V, allowing for 1-cell lithium-ion batteries or 5V voltage rail. The KTD2041 has adaptive output voltage control based on the headroom voltages of the LED current sinks to minimize power consumption. Additionally, the device has integrated high-side and low-side power FET. The buck regulator features advanced adaptive On-Time control with a 1MHz switching frequency, which minimizes external component counts and allows the use of a tiny inductor and capacitor.
The KTD2041 is housed in a RoHS and Green-compliant 3mm x 3mm UQFN package.
Features
- 2.7V to 5.5V input voltage operating range
- Open-drain FAULT signal output and fault reset
- Extensive fault diagnostics
- 140μA typical no-load supply current
- Nine high-precision current sinks
- LED current up to 32mA per channel
- ±1% typical current matching
- ±2% typical current accuracy at 32mA
- 6-bit current dimming control with I2C
- Independent On/Off control
- Supports both independent and global dimming
- High-efficiency buck regulator
- Integrated 200mΩ / 100mΩ high / low-side FET
- Adaptive on-time control with default 1MHz switching frequency, with factory programmable 1.5MHz, 2MHz, and 2.5MHz options
- Adaptive VOUT control based on the headroom voltages of the LED current sinks
- Selectable auto-skip mode or forced-PWM mode at light loads
- -40°C to +85°C operating ambient temperature range
- Small UQFN-20 (3mm x 3mm) package
Applications
- IR LED drivers
- Video door bells
- Security cameras
- IRIS recognition cameras
Typical Application
公開: 2024-07-08
| 更新済み: 2024-07-12