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ISL8016 Synchronous Buck Regulators


Intersil's ISL8016 is a 6 A, low quiescent current, high efficiency, synchronous buck regulator


Intersil's ISL8016 Synchronous Buck RegulatorsIntersil's ISL8016 is a high efficiency, monolithic, synchronous step-down DC/DC converter that can deliver up to 6 A continuous output current from a 2.7 V to 5.5 V input supply. The output voltage is adjustable from 0.6 V to VIN. With an adjustable current limit, reverse current protection, pre-bias start and over temperature protection the ISL8016 offers a highly robust power solution. It uses current control architecture to deliver fast transient response and excellent loop stability.

The ISL8016 integrates a pair of low ON-resistance P-Channel and N-Channel internal MOSFETs to maximize efficiency and minimize external component count. 100% duty-cycle operation allows less than 200 mV dropout at 6 A output current. Adjustable frequency and synchronization allow the ISL8016 to be used in applications requiring low noise. Paralleling capability with phase interleaving allows the IC to support output current greater than 6 A while offering reduced input and output noise.

The ISL8016 can be configured for discontinuous or forced continuous operation at light load. Forced continuous operation reduces noise and RF interference, while discontinuous mode provides high efficiency by reducing switching losses at light loads.

The ISL8016 is offered in a space saving 20 Ld, 3 x 4 QFN, lead-free package with exposed pad lead frames for excellent thermal performance. The complete converter occupies less than 0.15 in2 area.

Features Applications
  • High efficiency synchronous buck regulator with up to 97% efficiency
  • 1% reference accuracy over-temperature/load/line
  • Fixed output voltage option
  • ±10% output voltage margining
  • Adjustable current limit
  • Current sharing capable
  • Start-up with pre-biased output
  • Internal soft-start - 1 ms or adjustable, internal/external compensation
  • Soft-stop output discharge during disabled
  • Adjustable frequency from 500 kHz to 4 MHz - default at 1 MHz
  • External synchronization up to 4 MHz - master to slave phase shifting capability
  • Peak current limiting, hiccup mode short circuit protection and over-temperature protection
  • DC/DC POL modules
  • µC/µP, FPGA and DSP power
  • Plug-in DC/DC modules for routers and switchers
  • Portable instruments
  • Test and measurement systems
  • Li-ion battery powered devices

Digi-Key P/N Manufacturer P/N Description
ISL8016IR12Z-T7ACT-ND ISL8016IR12Z-T7A IC REG BUCK SYNC 1.2V 6A 20QFN Datasheet
ISL8016IR15Z-T7ACT-ND ISL8016IR15Z-T7A IC REG BUCK SYNC 1.5V 6A 20QFN
ISL8016IR18Z-T7ACT-ND ISL8016IR18Z-T7A IC REG BUCK SYNC 1.8V 6A 20QFN
ISL8016IR25Z-T7ACT-ND ISL8016IR25Z-T7A IC REG BUCK SYNC 2.5V 6A 20QFN
ISL8016IR33Z-T7ACT-ND ISL8016IR33Z-T7A IC REG BUCK SYNC 3.3V 6A 20QFN
ISL8016IRAJZ-T7ACT-ND ISL8016IRAJZ-T7A IC REG BUCK SYNC ADJ 6A 20QFN
ISL8016CIR1EVAL1Z-ND ISL8016CIR1EVAL1Z EVAL BOARD 1 FOR ISL8016CIR
Available in Tape & Reel (TR-ND), Cut Tape (CT-ND), and custom Digi-Reel® (DKR-ND)