RT8270 Ver la hoja de datos (PDF) - Richtek Technology

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RT8270

2A, 22V, 1.2MHz Step-Down Converter

Richtek Technology 

Typical Operating Characteristics

Efficiency vs. Output Current

100

90

80

VIN = 4.75V

70

VIN = 12V

VIN = 22V

60

50

40

30

20

10

0

0

VOUT = 3.3V

0.4

0.8

1.2

1.6

2

Output Current (A)

Output Voltage vs. Output Current

3.300

3.297

3.294

3.291

3.288

3.285

VIN = 9V

VIN = 12V

VIN = 22V

3.282

3.279

0

VOUT = 3.3V

0.4

0.8

1.2

1.6

2

Output Current (A)

1.40

1.35

1.30

1.25

1.20

1.15

1.10

1.05

1.00

4

Frequency vs. Input Voltage

VIN = 4.75V to 22V, VOUT = 3.3V

6 8 10 12 14 16 18 20 22

Input Voltage (V)

DS8270-01 March 2011

RT8270

Reference Voltage vs. Input Voltage

1.226

1.224

1.222

1.220

1.218

1.216

1.214

4

VIN = 4.75V to 22V, VOUT = 3.3V

7

10

13

16

19

22

Input Voltage (V)

Output Voltage vs. Temperature

3.400

3.375

3.350

3.325

3.300

3.275

3.250

3.225

3.200

-50 -25

VIN = 12V, VOUT = 3.3V, IOUT = 0A

0

25 50 75

Temperature (°C)

100 125

1.40

1.35

1.30

1.25

1.20

1.15

1.10

1.05

1.00

-50

Frequency vs. Temperature

VIN = 12V, VOUT = 3.3V

-25

0

25 50 75 100 125

Temperature (°C)

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