BU28TA2WNVX(2009) Просмотр технического описания (PDF) - ROHM Semiconductor

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Компоненты Описание

производитель

BU28TA2WNVX
(Rev.:2009)

High-speed Load Response FULL CMOS LDO Regulators

ROHM Semiconductor 

BUTA2WNVX Series, BUTA2WHFV Series

 Reference data BU15TA2WNVX / HFV (Ta=25ºC unless otherwise specified.)

Technical Note

1.8

1.5

1.2

0.9

IO=0uA

IO=100uA

0.6

IO=50mA

IO=200mA

0.3

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. 5 Output Voltage

1.55

1.54

IO=0uA

1.53

IO=100uA

IO=50mA

1.52

IO=200mA

1.51

1.50

1.49

1.48

1.47

Temp=25°C

1.46

VIN = STBY

1.45

1.25 1.35 1.45 1.55 1.65 1.75 1.85 1.95 2.05 2.15 2.25

Vin Voltage (V)

Fig. 6 Line Regulation

100

80

60

40

Temp=-40°C

20

Temp=25°C

IO=0uA

Temp=85°C 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. 7 Circuit Current IGND

140

120

100

80

60

Temp=-40°C

40

Temp=25°C

Temp=85°C

20

IO=200mA

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. 8 Circuit Current IGND

1.55

1.54

1.53

1.52

1.51

1.50

1.49

1.48

1.47

1.46

1.45

0

Temp=25°C

Temp=-40°C

Temp=85°C

VIN = 3.5V

STBY = 1.5V

0.05

0.1

0.15

0.2

Output Current (A)

Fig. 11 Load Regulation

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

STBY Voltage (V)

Fig. 9 STBY Input Current

2.00

1.75

1.50

1.25

1.00

0.75

0.50

0.25

0.00

0.00

VIN=5.5V

VIN=3.5V

VIN=2.5V

Temp=25°C

STBY = 1.5V

0.10

0.20

0.30

0.40

0.50

0.60

Output Current (A)

Fig. 12 OCP Threshold

120

110

100

90

80

70

60

50

40

0

Temp=85°C

Temp=25°C

Temp=-40°C

VIN = 3.5V

STBY = 1.5V

0.05

0.1

0.15

0.2

Output Current (A)

Fig. 10 IOUT - IGND

2.00

1.75

1.50

1.25

1.00

0.75

Temp=85°C

0.50

Temp=25°C

Temp=-40°C

0.25

0.00

0

0.5

1

1.5

STBY Voltage (V)

Fig. 13 STBY Threshold

1.55

1.54

1.53

1.52

1.51

1.50

1.49

1.48

VIN=3.5V

1.47

STBY=1.5V

1.46

Io=0.1mA

1.45

-40

-15

10

35

60

85

Temp (°C)

Fig. 14 VOUT vs. Temp

50.00

40.00

30.00

20.00

10.00

VIN=3.5V

STBY=1.5V

Io=0mA

0.00

-40

-15

10

35

60

85

Temp (°C)

Fig. 15 IGND vs. Temp

1.000

0.900

0.800

0.700

0.600

0.500

0.400

0.300

0.200

0.100

0.000

VIN=3.5V

STBY=0V

-0.100

-40 -15 10 35 60 85

Temp (°C)

Fig. 16 IGND vs. Temp (STBY)

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

5/27

2009.05 - Rev.B

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