Synchronous Buck Controller, Single

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Overview

The NCP5217A is a synchronous step-down controller for high performance battery-power systems. The NCP5217A includes a high efficiency PWM controller. A pin is provided to enable or disable force PWM mode of operation. An internal power good voltage monitor tracks the SMPS output. NCP5217A also features soft-start sequence, UVLO for VCC and switcher, overvoltage protection, overcurrent protection, undervoltage protection and thermal shutdown. The IC is packaged in QFN-14.

  • Notebook computers
  • 0.8% accuracy 0.8 V reference
  • 4.5 V to 27 V battery/adapter voltage range
  • Selectable power saving mode/force PWM mode
  • Lossless inductor current sensing
  • Programmable adaptive voltage positioning (AVP)
  • Input supply feedforward control
  • Internal Soft-Start
  • Integrated output discharge (Soft Stop)
  • Built-in adaptive gate driver
  • PGOOD indication
  • Overvoltage, undervoltage and overcurrent protection
  • Thermal shutdown

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NCP5217AMNTXG

Last Shipments

Pb

A

H

P

QFN-14

1

260

REEL

3000

N

Step-Down

1

Current/Voltage Mode

4.5

27

300

Price N/A

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