BD8305MUV-E2 datasheet(5/16 Pages) ROHM

Part #	BD8305MUV-E2

Description	High-effciency Step-up/down Switching Regulators with Built-in Power MOSFET

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Manufacturer	ROHM [Rohm]

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Technical Note

5/15

BD8305MUV

www.rohm.com

2010.05 - Rev.D

○

c

●

Reference Data

(Unless otherwise specified, Ta = 25°C, VCC = 3.7 V)

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

012

34

FB VOLTAGE [V]

INV=1.1V

-40

-35

-30

-25

-20

-15

-10

-5

0

0.0

0.5

1.0

1.5

2.0

FB VOLTAGE [V]

INV=0.5V

0.790

0.795

0.800

0.805

0.810

-50

0

50

100

150

TEMPERATURE [℃]

VCC=2.4V

VCC=3.7V

VCC=5.5V

VCC=7.0V

1.8

1.9

2.0

2.1

2.2

2.3

2.4

2.5

2.6

-50

0

50

100

150

TEMPARATURE [℃]

DETECT

RESET

0.790

0.795

0.800

0.805

0.810

0.0

2.0

4.0

6.0

8.0

VCC [V]

UVLO

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-50

0

50

100

150

TEMPERATURE [℃]

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

23456

VCC [℃]

0

50

100

150

200

250

300

-60

-10

40

90

140

TEMPERATURE [℃]

VCC=2.0V

VCC=3.0V

VCC=3.7V

VCC=6.0V

Fig.3 INV threshold

Fig.8

FB sink current

Fig.9

FB source current

Fig.5 Oscillation frequency

Fig.7 UVLO threshold

Fig.4 INV threshold (power supply property)

Fig.11 Lx1 Nch FET ON resistance

Fig.6

Oscillation frequency

(power supply property)

Fig.10 Lx1 Pch FET ON resistance

0

50

100

150

200

250

300

-60

-10

40

90

140

TEMPERATURE [℃]

VCC=2.0V

VCC=3.0V

VCC=3.7V

VCC=6.0V

Io=500mA

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BD8305MUV-E2 Datasheet(PDF) 5 Page - Rohm

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