The ADP5054 combines four high performance buck regulators in a 48-lead LFCSP package that meets demanding performance and board space requirements. The device enables direct connection to high input voltages up to 15.5 V with no preregulators.
Channel 1 and Channel 2 integrate high-side power MOSFETs and low-side MOSFET drivers. External NFETs can be used in low-side power devices to achieve an efficiency optimized solution and deliver a programmable output current of 2 A, 4 A, and 6 A. Combining Channel 1 and Channel 2 in a parallel configuration can provide a single output with up to 12 A of current.
Channel 3 and Channel 4 integrate both high-side and low-side MOSFETs to deliver output current of 2.5 A. Combining Channel 3 and Channel 4 in a parallel configuration can provide a single output with up to 5 A of current.
The switching frequency of the ADP5054 can be programmed or synchronized to an external clock from 250kHz to 2MHz, and individual 1/2× frequency configuration is available for each channel.
The ADP5054 contains an individual precision enable pin on each channel for easy power-up sequencing. The internal low 1/f noise reference is implemented in ADP5054 for the noise sensitive applications.
**Applications**
FPGA and processor applications
Small cell base stations
Security and surveillance
Medical applications
### Features and Benefits
Wide input voltage range: 4.5 V to 15.5 V
±1.5% output accuracy over full temperature range
250 kHz to 2 MHz adjustable switching frequency with individual ½× frequency option
Power regulation
Channel 1 and Channel 2
Programmable 2 A/4 A/6 A sync buck regulators with low-side FET drivers
Channel 3 and Channel 4: 2.5 A sync buck regulators
Flexible parallel operation
Single 12 A output (Channel 1 and Channel 2 in parallel)
Single 5 A output (Channel 3 and Channel 4 in parallel)
Low 1/f noise density
40 μV rms at 0.8 VREF for 10 Hz to 100 kHz
Precision enable with 0.811 V accurate threshold
Active output discharge switch
FPWM/PSM mode selection
Frequency synchronization input or output
Power-good flag for Channel 1 output
UVLO, OCP, and TSD protection
48-lead, 7 mm × 7 mm LFCSP
−40°C to +125°C operational junctional temperature range
