Analog Devices ADP5054

Description

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 of 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 to deliver a programmable output current of 2 A, 4 A, or 6 A. Combining Channel 1 and Channel 2 in a parallel configuration provides 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 an 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 250 kHz to 2 MHz, and an individual ½× 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 the ADP5054 for noise sensitive applications.

Features

• 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

Remarks:Table 11. Recommended InductorsRefer page no.21

Typical applications

• Security and surveillance
• FPGA and processor applications
• Medical applications
• Small cell base stations

More information

• Datasheet
• IC product information