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ST1S09 - 1.5 MHz PWM step-down switching regulator

Description

The ST1S09 is a step-down DC-DC converter optimized for powering low output voltage applications.

It supplies a current in excess of 2A over an input voltage range from 2.7V to 6V.

A high PWM switching frequency (1.5MHz) allows the use of tiny surface-mount components.

Features

  • 1.5MHz fixed frequency PWM with current control mode.
  • 2A output current capability www. DataSheet4U. com.
  • Typical efficiency: > 90%.
  • 2% DC output voltage tolerance Two versions available: Power Good or Inhibit Integrated output over-voltage protection Non switching quiescent current: (typ) 1.5mA over temperature range RDSON (typ) 100mΩ Utilizes tiny capacitors and inductors Operating junction temp. -30°C to 125°C Available in DFN6 3.

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Full PDF Text Transcription

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ST1S09 2A, 1.5 MHz PWM step-down switching regulator with synchronous rectification Features ■ 1.5MHz fixed frequency PWM with current control mode ■ 2A output current capability www.DataSheet4U.com ■ Typical efficiency: > 90% ■ ■ ■ ■ ■ ■ ■ ■ 2% DC output voltage tolerance Two versions available: Power Good or Inhibit Integrated output over-voltage protection Non switching quiescent current: (typ) 1.5mA over temperature range RDSON (typ) 100mΩ Utilizes tiny capacitors and inductors Operating junction temp. -30°C to 125°C Available in DFN6 3x3mm exposed pad Moreover, since the required synchronous rectifier is integrated, the number of the external components is reduced to minimum: a resistor divider, an inductor and two capacitors.
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