S8355 datasheet(2/72 Pages) SII

tên linh kiện	S8355

Giải thích chi tiết về linh kiện	STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

PDF	72 Pages

Scroll/Zoom	100%

nhà sản xuất	SII [Seiko Instruments Inc]

Trang chủ	http://www.sii.co.jp

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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



Block Diagrams

(1) S-8357/58 Series B, H and F Types

(Without Shutdown Function)

(2) S-8357/58 Series B, H, F and N Types

(With Shutdown Function)

VOUT

EXT

VSS

PWMcontrol circuit or

PWM / PFM switching

control circuit

Oscillation circuit

Soft start built-in

reference power

supply

Phase

compensation

circuit

IC internal

power supply

−

VOUT

VSS

EXT

Phase

compensation

circuit

Soft start built-in

reference power

supply

PWMcontrol circuit or

PWM / PFM switching

control circuit

Oscillation circuit

OFF

IC internal

power

supply

−

Figure 1

Figure 2

(3) S-8357/58 Series E, J, G and P Types

(VDD / VOUT Separate Type)

(4) S-8355/56 Series K, L, M and Q Types

(With Shutdown Function, VDD / VOUT Separate Type)

EXT

VSS

Oscillation circuit

PWMcontrol circuit or

PWM / PFM switching

control circuit

Soft start built-in

reference power

supply

VOUT

VDD

Phase

compensation

circuit

IC internal

power

supply

−

EXT

VDD

VOUT

VSS

Oscillation circuit

PWMcontrol circuit or

PWM / PFM switching

control circuit

−

Soft start built-in

reference power

supply

Phase

compensation

circuit

IC internal

power

supply

OFF

Figure 3

Figure 4

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