Technical Note

BU4015B,BU4015BF,BU4021B,BU4021BF,

BU4094BC,BU4094BCF,BU4094BCFV,BU4538B,BU4028B

2/17

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2009.06 - Rev.A

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When used at Ta=25℃ or higher the value above is reduced per 1℃. Power Dissipation

is measured by using the sample mounted on a 70mm×70mm×1.6mm

FR4 glass-epoxy PCB (cupper area is less than 3%)

●

Absolute Maximum Ratings

Parameter

Symbol

Limit

Unit

BU4015B

BU4021B

BU4094BC

BU4538B

BU4028B

Power Supply Voltage

VDD

-0.3 to 18

V

Supply Current

Iin

±10

mA

Operating Temperature

Topr

-40 to 85

℃

Storage Temperature

Tstg

-55 to 150

℃

Input Voltage

VIN

-0.3 to VDD+0.3

V

Maximum Junction Temperature

Tjmax

150

℃

●

Recommended Operating Conditions

Parameter

Symbol

Limit

Unit

BU4015B

BU4021B

BU4094BC

BU4538B

BU4028B

Operating Power Supply

VDD

3 to 16 (3 to 18V @BU4094BC)

V

Input Voltage

VIN

0 to VDD

V

●

Thermal Derating Curve

●

Input / Output Equivalent Circuits

(*1)

(*2)

(*3)

Unit

10.0

5.0

3.1

mW/℃

＜

Input＞

＜

Output＞

VDD

GND

VDD

GND

VDD

VDD

GND

GND

1400

1200

1000

800

400

0

25

50

75

100

125

150

175

Ambient temperature Ta [℃]

85℃

600

200

1250[mV] BU4＊＊＊

(*1)

620[mV] BU4＊＊＊FV

(*2)

380[mV] BU4＊＊＊F

(*3)

(＊)Below shows BU4＊＊＊

BU4015B

BU4021B

BU4094BC

BU4538B

BU4028B