ADP5051
Integrated Power Solution with Quad Buck Regulators, Supervisory, and I2C Interface
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Overview
Features and Benefits
- Wide input voltage range: 4.5 V to 15.0 V
- ±1.5% output accuracy over full temperature range
- Adjustable/fixed output options via factory fuse or I2C interface
- I2C interface with interrupt on fault conditions
- Power regulation
Channel 1 and Channel 2: programmable 1.2 A/2.5 A/4 A sync buck regulators with low-side FET driver
Channel 3 and Channel 4: 1.2 A sync buck regulators
- 250 kHz to 1.4 MHz adjustable switching frequency
- Single 8 A output (Channel 1 and Channel 2 in parallel)
- Dynamic voltage scaling (DVS) for Channel 1 and Channel 4
- Precision enable with 0.8 V accurate threshold
- Programmable phase shift in 90° steps
- Individual channel FPWM/PSM selection
- Frequency synchronization input or output
- See data sheet for additional features
Product Details
The ADP5051 combines four high performance buck regulators, and a supervisory circuit with a voltage monitor, watchdog, and manual reset 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 15.0 V with no preregulators.
Channel 1 and Channel 2 integrate high-side power MOSFET and low-side MOSFET drivers. In low-side power devices, use external NFETs to achieve an efficiency optimized solution and deliver a programmable output current of 1.2 A, 2.5 A, or 4 A.
Combining Channel 1 and Channel 2 in a parallel configuration provides a single output with up to 8 A of current. Channel 3 and Channel 4 integrate both high-side and low-side MOSFETs to deliver an output current of 1.2 A.
The ADP5051 supervisory circuits monitor voltage level. The watchdog timer generates a reset when the WDI does not toggle within a preset timeout period. Select manual reset functionality via the processor reset mode or system power on/off switch mode.
The optional I2C interface offers flexible configurations, including adjustable and fixed output voltage, junction temperature overheat warning, low input voltage detection, and dynamic voltage scaling.
APPLICATIONS
- Small cell base stations
- FPGA and processor applications
- Security and surveillance
- Medical applications
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
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Integrated Power Solutions for Altera FPGAs2/14/2015PDF2460 kB
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Highest Power Density, Multirail Power Solution for Space-Constrained Applications11/1/2013 Analog Dialogue
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
ADP5051
Design Tools
ADP505x Buck Regulator Design Tool
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADP5051ACPZ-R7 | Material Declaration | Reliability Data | 48-Lead LFCSP (7mm x 7mm x 0.75mm w/ EP) | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
ADP5051 Discussions
RE: Schematic for ADP5053 EVAL Board
25 week(s) ago in Power Management
Sample & Buy
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Lead Times
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Sampling
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.