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The ADP5055ACCZ integrates three high-performance step-down regulators in a 43-pin substrate grid array (LGA) package to meet demanding performance and board space requirements. The device can be directly connected to input voltages up to 18 V, eliminating the need for a pre-regulator. All channels incorporate high-end and low-end power metal-oxide-semiconductor field-effect transistors (MOSFETs) to optimise the efficiency of the solution. Channels 1 and 2 provide programmable output currents of 3.5 A or 7 A, or a single output current of up to 14 A in parallel operation mode. Channel 3 provides 1.5 A or 3 A of programmable output current.

The switching frequency of the ADP5055ACCZ is programmable or synchronised to an external clock. each channel of the ADP5055 incorporates an enable pin (ENx) that allows easy setup of the power-up timing or change of the adjustable undervoltage protection (UVLO) threshold.

The ADP5055ACCZ integrates a high-precision 8-bit digital-to-analog converter (DAC) that enables dynamic voltage regulation (DVS) of the output voltage via a PMBus ®-compatible 2-wire interface.The PMBus interface provides other flexible configurations, such as startup and shutdown timing control, individual forced pulse-width modulation or power-save mode (FPWM or PSM) selections, output discharge switching, and power-good signals.

The ADP5055ACCZ is rated for a junction temperature range of -40°C to +150°C.

Features

Wide input voltage range: 2.75 V to 18 V 

Bias input voltage range: 4.5 V to 18 V 

Operating junction temperature up to 150°C

PMBus-compatible interface with configurable address 

FB1 voltage accuracy (default): -0.62% to +0.69% (-40°C ≤ TJ ≤ +125°C) 

Channel 1 and Channel 2: 7 A synchronous buck regulator (9.4 A minimum valley current limit threshold) 

Channel 1 and Channel 2: 14 A outputs in parallel operation 

Channel 3: 3 A synchronous buck regulator (9.4 A minimum valley current limit threshold) 

8-bit precision DAC for DVS 

Adjustable feedback voltage range: 408 mV to 790.5 mV in 1.5 mV steps 

Upper and lower threshold settings 

Adjustable switching frequency range of 250 kHz to 2500 kHz 

External compensation for fast load transient response

Precision enable pin with 0.615 V precision threshold

Programmable power-up and power-down sequences 

Selective active output discharge switching chip

Selective FPWM/PSM mode selection

Frequency synchronisation input or output 

Selective channel power normal marking

UVLO, overcurrent and TSD protection

43-terminal 5.00 mm × 5.50 mm LGA package

Applications

Small cell base stations

Field-programmable gate array (FPGA) and processor applications

Security and surveillance

Medical applications

• 1.Is the inventory and price seen on the platform accurate?

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• 6.Can the company issue an invoice?

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