Analog Devices ADP5014

Beschreibung

The ADP5014 combines four high performance, low noise buckregulators in a 40-lead LFCSP package. Relying on its lowoutput noise (~25 μV rms when VOUT ≤ VREF), the low noisebuck regulator enables the powering up of the noise sensitivesignal chain products.All channels in the ADP5014 integrate high-side and low-sidepower metal-oxide semiconductor field effect transistors(MOSFET). Channel 1 and Channel 2 deliver a programmableoutput current of 2 A or 4 A. Combining Channel 1 andChannel 2 in a parallel configuration provides a single outputwith up to 8 A of current.Channel 3 and Channel 4 deliver a programmable output currentof 1 A or 2 A. Combining Channel 3 and Channel 4 in a parallelconfiguration can provide a single output with up to 4 A of current.The ADP5014 features two enable modes. The manual modehas four individual precision enable pins to enable eachregulator manually. Alternatively, the sequence mode has onegrouped precision enable signal with programmable power-upand power-down delay timers on each rail for specific railsequence requirements.The switching frequency of the ADP5014 can be programmedor synchronized to an external clock from 500 kHz to 2.5 MHz.The ADP5014 offers other key features like selective forcedpulse width modulation (FPWM)/power saving mode (PSM),an undervoltage output (UVO), active output discharge, and apower-good flag. Other safety features include input undervoltagelockout (UVLO), overvoltage protection (OVP),overcurrent protection (OCP) and thermal shutdown (TSD)

Eigenschaften

Input voltage range: 2.75 V to 6.0 VProgrammable output voltage range: 0.5 V to 0.9 × PVINxLow output noise: ~25 μV rms when VOUT ≤ VREF±1.0% output accuracy over full temperature range500 kHz to 2.5 MHz adjustable switching frequencyPower regulationChannel 1 and Channel 2: programmable 2 A/4 A syncbuck regulators, or single 8 A output in parallelChannel 3 and Channel 4: programmable 1 A/2 A syncbuck regulators, or single 4 A output in parallelFlexible parallel operationPrecision enable with 0.6 V thresholdManual or sequence mode for power-up and power-downsequenceSelective FPWM or PSM operation modePrecision undervoltage comparatorFrequency synchronization input or outputActive output discharge switchPower-good flag on selective channels via factory fuseUVLO, OVP, OCP, and TSD protection40-lead, 6 mm × 6 mm LFCSP package−40°C to +125°C junction temperatureAPPLICATIONSRF transceiver, high speed analog-to-digital converter(ADC)/digital-to-analog converter (DAC), mixed signal ASICFPGA and processor applicationsSecurity and surveillanceMedical applications

Weiterführende Informationen

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