S8333 datasheet(34/44 Pages) SII

Part #	S8333

Description	STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL, PWM CONTROL SWITCHING REGULATOR CONTROLLER

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Manufacturer	SII [Seiko Instruments Inc]

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

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34 / 44 page

STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL, PWM CONTROL SWITCHING REGULATOR CONTROLLER

S-8333 Series

Rev.4.2_01

34

3. 3 VOUT

= 6.1 V (RFB1 = 5.1 kΩ, RFB2 = 1.0 kΩ)

(1) fOSC

= 1080 kHz, MaxDuty = 73%

(ROSC

= 120 kΩ, RDuty = 180 kΩ)

(2) fOSC

= 650 kHz, MaxDuty = 73%

(ROSC

= 200 kΩ, RDuty = 300 kΩ)

0.01

1

10

100

1000

100

90

80

70

60

50

40

30

20

10

0

IOUT [mA]

0.1

VIN = 3.3 V

VIN = 2.5 V

0.01

1

10

100

1000

100

90

80

70

60

50

40

30

20

10

0

IOUT [mA]

0.1

VIN = 3.3 V

VIN = 2.5 V

(3) fOSC

= 280 kHz, MaxDuty = 73%

(ROSC

= 470 kΩ, RDuty = 750 kΩ)

0.01

1

10

100

1000

100

90

80

70

60

50

40

30

20

10

0

IOUT [mA]

0.1

VIN = 3.3 V

VIN = 2.5 V

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S8333 Datasheet(PDF) 34 Page - Seiko Instruments Inc

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