S8353 datasheet(2/49 Pages) SII

Part #	S8353

Description	STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR

PDF	49 Pages

Scroll/Zoom	100%

Manufacturer	SII [Seiko Instruments Inc]

Direct Link	http://www.sii.co.jp

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2 / 49 page

STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR

S-8353/8354 Series

Rev.3.0_01



Block Diagrams

(1) A, C and H Types (Without Shutdown Function)

CONT

VOUT

Oscillation circuit

PWMcontrol circuit

or PWM / PFM

swiching control

circuit

VSS

Phase

compensation

circuit

Soft start built-in

reference power

supply

IC internal

power supply

−

Figure 1

(2) A and H Types (With Shutdown Function)

CONT

VOUT

Oscillation circuit

PWMcontrol circuit

or PWM / PFM

swiching control

circuit

VSS

OFF

Soft start built-in

reference power

supply

Phase

compensation

circuit

IC internal

power supply

−

Figure 2

(3) D and J Types (VDD / VOUT Separate Type)

CONT

VOUT

VDD

Oscillation circuit

PWMcontrol circuit

or PWM / PFM

swiching control

circuit

VSS

IC internal

power supply

Soft start built-in

reference power

supply

Phase

compensation

circuit

−

Figure 3

S8353 Datasheet(PDF) 2 Page - Seiko Instruments Inc

S8353 Datasheet(HTML) 2 Page - Seiko Instruments Inc

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