S8337 datasheet(9/51 Pages) SII

Part #	S8337

Description	STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER

PDF	51 Pages

Scroll/Zoom	100%

Manufacturer	SII [Seiko Instruments Inc]

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

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9 / 51 page

STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER

Rev.4.0_01

S-8337/8338 Series



External Parts When Measuring Electrical Characteristics

Table 6 External Parts

Element Name

Symbol

Manufacturer

Part Number

Inductor

TDK Corporation

LDR655312T 4.7

μH

Diode

Rohm Co., Ltd.

RB491D

Output capacitor

⎯

Ceramic 10

μF

Transistor

Sanyo Electric Co., Ltd.

MCH3406

Oscillation frequency setting resistor

ROSC

⎯

200 k

Ω (when fOSC = 700 kHz)

Maximum duty ratio setting resistor

RDuty

⎯

300 k

Ω (when MaxDuty = 77%)

Short-circuit protection delay time

setting capacitor

CSP

⎯

0.1

μF (when tPRO = 50 ms)

Output voltage setting resistor 1

RFB1

⎯

8.2 k

Ω (when VOUT = 9.2 V)

Output voltage setting resistor 2

RFB2

⎯

1.0 k

Ω (when VOUT = 9.2 V)

FB pin capacitor

CFB

⎯

180 pF

Phase compensation resistor

⎯

200 k

Phase compensation capacitor

⎯

0.01

μF

S8337 Datasheet(PDF) 9 Page - Seiko Instruments Inc

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