BD3523HFN, BD35230HFN, BD35231HFN

Technical Note

2/20

www.rohm.com

2009.04 - Rev.B

© 2009 ROHM Co., Ltd. All rights reserved.

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Absolute maximum ratings

Parameter

Symbol

Limit

Unit

BD3523HFN

BD35230HFN

BD35231HFN

Input Voltage 1

+6.0

*1

V

Input Voltage 2

+6.0

*1

V

Maximum Output Current

2

*1

A

Enable Input Voltage

-0.3～+6.0

V

Power Dissipation 1

Pd1

0.63

*2

W

Power Dissipation 2

Pd2

1.35

*3

W

Power Dissipation 3

Pd3

1.75

*4

W

Operating Temperature Range

Topr

-10～+100

℃

Storage Temperature Range

Tstg

-55～+125

℃

Maximum Junction Temperature

Tjmax

+150

℃

*1 Should not exceed Pd.

*2 Reduced by 5.04mW/℃ for each increase in Ta≧25℃ (when mounted on a 70mm×70mm×1.6mm glass-epoxy board, 1-layer,

copper foil area : less than 0.2%)

*3 Reduced by 10.8mW/℃ for each increase in Ta≧25℃ (when mounted on a 70mm×70mm×1.6mm glass-epoxy board, 1-layer,

copper foil area : less than 7.0%)

*4 Reduced by 14.0mW/℃ for each increase in Ta≧25℃ (when mounted on a 70mm×70mm×1.6mm glass-epoxy board, 1-layer,

copper foil area : less than 65.0%)

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Operating Voltage(Ta=25℃)

Parameter

Symbol

BD3522EFV

BD35221EFV

BD35222EFV

Unit

Min.

Max.

Min.

Max.

Min.

Max.

Input Voltage 1

4.3

5.5

4.3

5.5

4.3

5.5

V

Input Voltage 2

0.95

VCC-1

*5

1.3

VCC-1

*5

1.5

VCC-1

*5

V

Output Voltage Setting Range

VFB

2.7

1.0 (fixed)

1.2 (fixed)

V

Enable Input Voltage

-0.3

5.5

-0.3

5.5

-0.3

5.5

V

NRCS Capacity

CNRCS

0.001

1

0.001

1

0.001

1

μ

F

*5 VCC and VIN do not have to be implemented in the order listed.

*This product is not designed for use in radioactive environments.