APEK8672EEG-01-T

• Product introduction

The A8672 is oneSynchronous buck converter, which can supply up to 8 A. The A8672 utilizes minimal current-mode control for very short on-times. This is ideal for applications that require an output voltage well below the input voltage and require a high switching frequency. Minimum current mode control uses a voltage feed-forward loop that adjusts the frequency during large variations in signal load, providing better transient response than traditional switching schemes.

The A8672 includes a complete set of diagnostic identifiers to allow the host platform to respond to a variety of situations. The fault output indicates an abnormal rise in temperature or a single point of fault, such as a short to ground at a switch node (LX) or an open time-stamp resistor. A Power Good Operating (POK) output is also available after a fixed delay to show when the output voltage is within regulation. Optional pulse-by-pulse current limit eliminates the need to increase inductor specifications to overcome large fault currents.

The unit is available in a 28-contact, 4 mm × 5 mm, 0.75 mm nominal total height QFN package (EG) with exposed heat sink. The package is lead (Pb) free and features 100% matte tin leadframe plating.

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• server
• Networking and telecommunications
• Point-of-load supply
• stockpile
• • Incorporates high-efficiency FETs to improve voltage conversion at lower duty cycles: 27 27 mΩ high-side, 12 mΩ low-side
  • Power supply input voltage range: 3 to 16 V
  • Control input voltage range: 4.5 to 16 V
  • The output voltage is adjustable down to 0.6 V
  • 5 V LDO regulator
  • Ultra-short minimum controllable turn-on time; Example: Conversion of 12 V to 0.6 V can be achieved at >1 MHz
  • Reference accuracy of ±1% over temperature range
  • faultand power supply good indicator pins can be used for operation and protection mode
  • Low Power Mode (LPM) or Fixed Continuous Conduction Mode (FCCM) operation
  • Programmable soft-start/hiccup shutdown time
  • Ultrafast transient response