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NCP1509 - High Efficiency Synchronous Step-Down DC-DC Converter

Description

Ground connection for the Analog Section of the IC.

Features

  • High Efficiency: 92.5% for 1.8 V Output at 3.6 V Input and 125 mA Load Current 91% for 1.8 V Output at 3.6 V Input and 300 mA Load Current.
  • Digital Programmable Output Voltages: 1.05, 1.35, 1.57 or 1.8 V.
  • Output Current up to 500 mA at Vin = 3.6 V.
  • Low Quiescent Current of 14 mA in Pulsed Switching Mode.
  • Low 0.2 mA Shutdown Current.
  • 30°C to 85°C Operation Temperature.
  • Low Profile DFN Package.
  • Pb.
  • Free Packag.

📥 Download Datasheet

Datasheet Details

Part number NCP1509
Manufacturer onsemi
File Size 461.04 KB
Description High Efficiency Synchronous Step-Down DC-DC Converter
Datasheet download datasheet NCP1509 Datasheet

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Full PDF Text Transcription

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NCP1509 Up to 500 mA, 1 MHz, High Efficiency Synchronous Step−Down DC−DC Converter in DFN Package The NCP1509 step−down PWM DC−DC converter is optimized for portable applications powered from 1−cell Li−ion or 3 cell Alkaline/NiCd/NiMH batteries. This DC−DC converter utilizes a current−mode control architecture for easy compensation and better line regulation. It also uses synchronous rectification to increase efficiency and reduce external part count. The NCP1509 optimizes efficiency in light load conditions when switched from a normal PWM mode to a “pulsed switching” mode. The device also has a built−in 1 MHz (nominal) oscillator for the PWM circuitry, or it can be synchronized to an external 500 kHz to 1000 kHz clock signal.
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