BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

2/16

www.rohm.com

2009.04- Rev.B

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

●Absolute Maximum Ratings (Ta＝25℃)

Parameter

Symbol

Ratings

Unit

Supply Voltage (VCC-GND)

VCC

36

V

STBY-GND

36

V

OUT-GND

36

V

INV-GND

10

V

Maximum Switching Current

BD9701/BD9703

Iout

1.5

A

BD9702

3

Power Dissipation

TO252

Pd

0.8

(*1)

W

TO220

2

(*2)

Operating Temperature

Topr

-40～+85

℃

Storage Temperature

Tstg

-55～+150

℃

*1 Without external heat sink, the power dissipation reduces by 6.4mW/℃ over 25℃.

*2 Without external heat sink, the power dissipation reduces by 16.0mW/℃ over 25℃.

Reduced by 160mW/℃, when mounted on Infinity size heatsink.

●Operating Conditions(Ta=-40～+85℃)

Parameter

Symbol

Limit

Unit

MIN

TYP

MAX

Input Voltage

8.0 or Vo+3

(*3)

-

35.0

V

Output Voltage

Vo

1.0

-

32

V

*3The minimum value of an input voltage is the higher either 8.0V or Vo+3

●Electrical Characteristics

○BD9701FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V)

Parameter

Symbol

Limit

Unit

Conditions

MIN

TYP

MAX

Output ON Resistance

Ron

-

1.0

1.5

Ω

design guarantee

Efficiency

η

-

86

-

%

Io＝0.5A design guarantee

Switching Frequency

fosc

80

100

120

kHz

Load Regulation

ΔVOLOAD

-

10

40

mV

VCC=20V,Io=0.5～1.5A

Line Regulation

ΔVOLINE

-

40

100

mV

VCC=10～30V,Io=1.0A

Over Current Protection Limit

Iocp

1.6

-

-

A

INV Pin Threshold Voltage

VINV

0.98

1.00

1.02

V

INV Pin Threshold Voltage

Thermal Variation

ΔVINV

-

±0.5

-

%

Tj=0～85℃ design guarantee

INV Pin Input Current

IINV

-

1

-

μA

VINV=1.0V

STBY Pin

Threshold Voltage

ON

VSTBYON

2.0

-

36

V

OFF

VSTBYOFF

-0.3

-

0.3

V

STBY Pin Input Current

Istby

5

25

50

μASTBY=3V

Circuit Current

Icc

-

4

12

mA

Stand-by Current

Ist

-

0

5

μASTBY＝0V

This product is not designed to be resistant to radiation.