CS51411 datasheet(13/16 Pages) ONSEMI

Part #	CS51411

Description	1.5A, 260 kHz AND 520 kHz, LOW VOLTAGE BUCK REGULATORS WITH EXTERNAL BIAS OR SYNCHRONIZATION CAPABILITY

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Manufacturer	ONSEMI [ON Semiconductor]

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CS51411, CS51412, CS51413, CS51414

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13

Figure 16. Additional Application Diagram, 5.0 V – 12 V to –5.0 V/400 mA Inverting Converter

VFB

VSW

2

GND

SHDNB

CS51412/4

1N4148

5.0 V

D3

15

µH

VIN

100

µF

100

µF

0.1

µF

C1

C3

R1

R2

C4

0.1

µF

Shutdown

L1

C1

12 V

D1

373

127

1

3

7

6

8

4

5

1N5821

BOOST

U1

BIAS

VC

D2 1N4148

Figure 17. Additional Application Diagram, 12 V to 5.0 V/1.0 A Buck Converter using the BIAS Pin

VFB

2

GND

SHDNB CS51411/3

–5.0 V output

D1

R2

VIN

0.01

µF

0.1

µF

22

µF

C1

C3

R1

R3

C4

0.1

µF

VSW

L1

C2

5.0 V – 12 V input

50 k

127

1

3

7

6

8

4

5

1N4148

BOOST

U1

SYNC

VC

C6

22

µ

C5

0.1

µF

D2

373

15

µH

MBR0520

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