S-8353 Seiko Instruments, S-8353 Datasheet - Page 23

• Manufacturer Part Number: S-8353
• Description: (S-8353 / S-8354) PWM Control Switchable Built-in Transistor Switching Regulator
• Manufacturer: Seiko Instruments

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Rev.1.4
STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
Precautions
• Mount external capacitors, diodes, and coils as close as possible to the IC. Especially, mounting the output capacitor
• Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover rush current flows
• Make sure that the dissipation of the switching transistor (especially at a high temperature) does not exceed the
• The performance of this IC varies depending on the design of the PCB patterns, peripheral circuits and external parts.
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic
• SII claims no responsibility for any and all disputes arising out of or in connection with any infringement of the products
(capacitor between VDD pin and VSS pin for V
can enable stable output characteristics. If it is impossible, it is recommended to mount and wire a ceramic capacitor
of around 0.1 µF close to the IC.
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.
allowable power dissipation of the package.
Thoroughly test all settings with your device. The recommended external part should be used wherever possible, but if
this is not possible for some reason, contact an SII sales person.
protection circuit.
including this IC upon patents owned a third party.
_00
Seiko Instruments Inc.
DD
/ V
OUT
separate type) in the power supply line of the IC close to the IC
S-8353/8354 Series
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