BD8311NUV

Technical Note

8/14

www.rohm.com

2010.11 - Rev.C

© 2010 ROHM Co., Ltd. All rights reserved.

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Reference Application Data 2 (VCC = 3.5 V, 6.0 V, 8.4 V, VOUT = 10 V)

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Reference Board Pattern

The radiation plate on the rear should be a GND flat surface of low impedance in common with the PGND flat surface.

It is recommended to install a GND pin in another system as shown in the drawing without connecting it directly to this PGND

-60

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0

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周波数

[Hz]

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-60

0

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Fig.26 Frequency response property 1

(VCC = 3.5 V, Io = 200 mA)

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0

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周波数

[Hz]

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0

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Fig.30 Frequency response property 5

(VCC = 6.0 V, Io = 500 mA)

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0

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100000 1000000

周波数

[Hz]

-180

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-60

0

60

120

180

Fig.27 Frequency response property 2

(VCC = 6.0 V, Io = 200 mA)

-60

-40

-20

0

20

40

60

100

1000

10000

100000 1000000

周波数

[Hz]

-180

-120

-60

0

60

120

180

Fig.28 Frequency response property 3

(VCC = 8.4 V, Io = 200 mA)

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0

20

40

60

100

1000

10000

100000 1000000

周波数

[Hz]

-180

-120

-60

0

60

120

180

Fig.29 Frequency response property 4

(VCC = 3.5 V, Io = 500 mA)

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0

20

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60

100

1000

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100000 1000000

周波数

[Hz]

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0

60

120

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Fig.31 Frequency response property 6

(VCC = 8.4 V, Io = 500 mA)

Phase

Gain

Phase

Gain

Phase

Gain

Phase

Gain

Phase

Gain

Phase

Gain

100

1k

10k

100k

1M

100

1k

10k

100k

1M

100

1k

10k

100k

1M

100

1k

10k

100k

1M

100

1k

10k

100k

1M

100

1k

10k

100k

1M

100

1k

10k

100k

1M

VOUT

GND

VBAT

Lx

Frequency [Hz]

Frequency [Hz]

Frequency [Hz]

Frequency [Hz]

Frequency [Hz]

Frequency [Hz]