ISL8016 Synchronous Buck Regulators

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

Image of 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. One hundred percent 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.

  • 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


ImageManufacturer Part NumberDescriptionFunctionOutput ConfigurationAvailable QuantityView Details
ISL8016IRAJZ-T7A datasheet linkIC REG BUCK ADJ 6A SYNC 20QFNISL8016IRAJZ-T7AIC REG BUCK ADJ 6A SYNC 20QFNStep-DownPositive1385 - Immediate
ISL8016IRAJZ-T7A product page link
ISL8016IR18Z-T7A datasheet linkIC REG BUCK 1.8V 6A SYNC 20QFNISL8016IR18Z-T7AIC REG BUCK 1.8V 6A SYNC 20QFNStep-DownPositive279 - Immediate
ISL8016IR18Z-T7A product page link
ISL8016IR25Z-T7A datasheet linkIC REG BUCK 2.5V 6A SYNC 20QFNISL8016IR25Z-T7AIC REG BUCK 2.5V 6A SYNC 20QFNStep-DownPositive495 - Immediate
ISL8016IR25Z-T7A product page link
ISL8016IR15Z-T7A datasheet linkIC REG BUCK 1.5V 6A SYNC 20QFNISL8016IR15Z-T7AIC REG BUCK 1.5V 6A SYNC 20QFNStep-DownPositive456 - Immediate
ISL8016IR15Z-T7A product page link
ISL8016IR12Z-T7A datasheet linkIC REG BUCK 1.2V 6A SYNC 20QFNISL8016IR12Z-T7AIC REG BUCK 1.2V 6A SYNC 20QFNStep-DownPositive363 - Immediate
ISL8016IR12Z-T7A product page link
ISL8016IR33Z-T7A datasheet linkIC REG BUCK 3.3V 6A SYNC 20QFNISL8016IR33Z-T7AIC REG BUCK 3.3V 6A SYNC 20QFNStep-DownPositive180 - Immediate
ISL8016IR33Z-T7A product page link

Eval Board

ImageManufacturer Part NumberDescriptionMain PurposeOutputs and TypeAvailable QuantityView Details
ISL8016CIR1EVAL1Z datasheet linkEVAL BOARD 1 FOR ISL8016CIRISL8016CIR1EVAL1ZEVAL BOARD 1 FOR ISL8016CIRDC/DC, Step Down1, Non-Isolated0ISL8016CIR1EVAL1Z product page link
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Published: 2013-07-02