KTD2042 Buck Regulator
Kinetic Technologies’ buck regulator is available in a RoHS compliant 3 mm x 3 mm UQFN package
Kinetic Technologies’ KTD2042 is an ideal power solution for an RGBW LED driver with an integrated buck regulator. It has nine high-precision current sinks that can be independently controlled (on/off control and 6-bit independent current dimming) via an I²C interface.
The highly efficient buck regulator has an input voltage operating range from 2.7 V to 5.5 V to accommodate 1-cell lithium-ion batteries or a 5 V voltage rail. It has adaptive output voltage control based on the headroom voltages of the LED current sinks to minimize power consumption. It has integrated high-side/low-side power FET. The buck regulator features advanced adaptive on-time control with 1 MHz switching frequency, which minimizes external component counts and allows the use of a very small inductor and capacitor.
The KTD2042 has extensive built-in protection features including cycle-by-cycle current limit, input undervoltage lockout (UVLO), output overvoltage protection, LED fault (open) protection, and thermal shutdown protection. The KTD2042 is available in a RoHS compliant 3 mm x 3 mm UQFN package.
- 140 μA typical no-load supply current
- Open-drain fault signal output and fault reset
- Disable LED short fault protection
- Input voltage operating range: 2.7 V to 5.5 V
- Nine high-precision current sinks
- LED current up to 32 mA per channel
- ±1% typical current matching
- ±2% typical current accuracy at 32 mA
- 6-bit current dimming control with I²C
- Independent on/off control
- Supports both independent and global dimming
- Extensive fault diagnostics
- Operating ambient temperature range: -40°C to +85°C
- Small UQFN-20 (3 mm x 3 mm) package
- High-efficiency buck regulator
- Integrated 200 mΩ/100 mΩ high/low-side FET
- Adaptive on-time control with default 1 MHz switching frequency, with factory programmable 1.5 MHz, 2 MHz, and 2.5 MHz 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
- RGBW LED drivers
- Video doorbells
- Security cameras
- IRIS recognition cameras
