BU28TA2WHFV View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BU28TA2WHFV

1ch 200mA CMOS LDO Regulators

ROHM Semiconductor 

BUTA2WNVX series, BUTA2WHFV series

●Reference data BU33TA2WNVX / HFV (Unless otherwise specified, Ta=25℃)

3.5

3.0

2.5

2.0

IO=0uA

1.5

IO=100uA

IO=50mA

1.0

IO=200mA

0.5

Temp.=25°C

VIN = STBY

0.0

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5

Vin Voltage (V)

Fig. 150 Output Voltage

3.35

3.34

3.33

3.32

3.31

3.30

3.29

3.28

3.27

3.26

3.25

3.2

IO=0uA

IO=100uA

IO=50mA

IO=200mA

Temp=25°C

VIN = STBY

3.3

3.4

3.5

3.6

3.7

Vin Voltage (V)

Fig. 151 Line Regulation

Technical Note

100

80

60

40

Temp.=-40°C

20

Temp.=25°C

Temp.=85°C

IO=0uA

VIN = STBY

0

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5

Vin Voltage (V)

Fig. 152 Circuit Current IGND

0.35

0.30

Temp.=85°C

0.25

0.20

Temp.=25°C

0.15

Temp.=-40°C

0.10

0.05

0.00

0

VIN=0.98 x VOUT

STBY = 1.5V

0.05

0.1

0.15

0.2

Output Current (A)

Fig. 153 Dropout Voltage

3.35

3.34

3.33

3.32

Temp.=25°C

Temp.=-40°C

3.31

3.30

3.29

3.28

Temp.=85°C

3.27

3.26

VIN = 4.3V

STBY = 1.5V

3.25

0

0.05

0.1

0.15

0.2

Output Current (A)

Fig. 156 Load Regulation

3.35

3.34

3.33

3.32

3.31

3.30

3.29

3.28

3.27

3.26

3.25

-40

VIN=4.3V

STBY=1.5V

Io=0.1mA

-15

10

35

60

85

Temp. (°C)

Fig. 159 VOUT vs Temp

10

8

Temp.=85°C

Temp.=25°C

6

Temp.=-40°C

4

2

VIN = STBY

0

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5

VSTBY Voltage (V)

Fig. 154 STBY Input Current

3.50

3.00

2.50

2.00

1.50

1.00

0.50

0.00

0

VIN=5.5V

VIN=3.8V

VIN=4.3V

STBY = 1.5V

Temp=25℃

0.1

0.2

0.3

0.4

0.5

0.6

Output Current (A)

Fig. 157 OCP Threshold

50.00

40.00

30.00

20.00

10.00

0.00

-40

-15

10

35

Temp. (°C)

VIN=4.3V

STBY=1.5V

Io=0mA

60

85

Fig. 160 IGND vs Temp

120

110

100

90

80

70

60

50

40

0

Temp.=85°C

Temp.=25°C

Temp.=-40°C

VIN = 4.3V

STBY = 1.5V

0.05

0.1

0.15

0.2

Output Current (A)

Fig. 155 IOUT - IGND

3.50

VIN=4.3V

3.00

2.50

2.00

1.50

1.00

Temp.=85°C

Temp.=25°C

0.50

Temp.=-40°C

0.00

0

0.5

1

1.5

STBY Voltage (V)

Fig. 158 STBY Threshold

1.000

0.900

0.800

0.700

0.600

0.500

0.400

0.300

0.200

0.100

0.000

-0.100

-40

VIN=4.3V

STBY=0V

-15

10

35

60

85

Temp. (°C)

Fig. 161 IGND vs Temp (STBY)

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21/29

2011.01 - Rev.C

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