Features and Benefits
- Wide input voltage range: 4.5 V to 15 V
- ±1.5% output accuracy over full temperature range
- 250 kHz to 1.4 MHz adjustable switching frequency
- Adjustable/fixed output options via factory fuse
- 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
- Channel 5: 200 mA low dropout (LDO) regulator
- Always alive 5.1 V LDO supply for tiny load demand
- Single 8 A output (Channel 1 and Channel 2 operated in parallel)
- Precision enable with 0.8 V accurate threshold
- Active output discharge switch
- FPWM or automatic PWM/PSM mode selection
- Frequency synchronization input or output
- Optional latch-off protection on OVP/OCP failure
- Power-good flag on selected channels
- UVLO, OCP, and TSD protection
- 48-lead, 7 mm × 7 mm LFCSP package
- −40°C to +125°C junction temperature
The ADP5052 combines four high performance buck regulators and one 200 mA low dropout (LDO) regulator 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 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 1.2 A, 2.5 A, or 4 A. Combining Channel 1 and Channel 2 in a parallel configuration can provide 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 output current of 1.2 A.
The switching frequency of the ADP5052 can be programmed or synchronized to an external clock. The ADP5052 contains a precision enable pin on each channel for easy power-up sequencing or adjustable UVLO threshold.
The ADP5052 integrates a general-purpose LDO regulator with low quiescent current and low dropout voltage that provides up to 200 mA of output current.
- Small cell base stations
- FPGA and processor applications
- Security and surveillance
- Medical applications
Markets and Technologies
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.
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Models for the following parts are available in LTspice:
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
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