S8355 datasheet(34/72 Pages) SII

34 / 72 page

STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8355/56/57/58 Series

Rev.8.1_01



Precautions

• Mount external capacitors, the diode, and the coil as close as possible to the IC.

• Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover rush current flows

at the time of a power supply injection. Because these largely depend on the coil, the capacitor and impedance of

power supply used, fully check them using an actually mounted model.

• Make sure that the dissipation of the switching transistor (especially at a high temperature) does not exceed the

allowable power dissipation of the package.

• The performance of this IC varies depending on the design of the PCB patterns, peripheral circuits and external parts.

Thoroughly test all settings with your device. Also, try to use the recommended external parts. If not, contact an SII

Semiconductor Corporation sales person.

• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic

protection circuit.

• SII Semiconductor Corporation claims no responsibility for any disputes arising out of or in connection with any

infringement by products including this IC of patents owned by a third party.

S8355 Datasheet(PDF) 34 Page - Seiko Instruments Inc