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S-8356 Datasheet PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Manufacturer: Seiko Instruments

Download the S-8356 datasheet PDF. This datasheet also includes the S-8355 variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (S-8355_SeikoInstruments.pdf) that lists specifications for multiple related part numbers.

Overview

S-8355/56/57/58 Series STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or www.sii-ic.com PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER © SII Semiconductor Corporation, 2002-2015 Rev.8.1_01 The S-8355/56/57/58 Series is a CMOS step-up switching regulator controller which mainly consists of a reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM control circuit (S-8355/57 Series) and a PWM/PFM switching control circuit (S-8356/58 Series).

With an external low-ON-resistance Nch Power MOS, this product is ideal for applications requiring high efficiency and a high output current.

The S-8355/57 Series realizes low ripple, high efficiency, and excellent transient characteristics due to its PWM control circuit whose duty ratio can be varied linearly from 0 to 83% (from 0 to 78% for 250 kHz, 300 kHz, and 600 kHz models), an excellently designed error amplifier and a phase compensation circuits.

Key Features

  • Low voltage operation : Startup at 0.9 V min. (IOUT = 1 mA) guaranteed.
  • Low current consumption : During operation 25.9 μA (3.3 V, 100 kHz, typ. ) During shutdown 0.5 μA (max. ).
  • Duty ratio : Built-in PWM/PFM switching control circuit (S-8356/58 Series) 15 to 83% (100 kHz models) 15 to 78% (250 kHz, 300 kHz, and 600 kHz models).
  • External parts : Coil, diode, capacitor, and transistor.
  • Output voltage : Selectable in 0.1 V steps between 1.5 and 6.5 V (f.

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