Wide 4.5V to 28V Input, Dual-Output

Synchronous Buck Controller

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5

EFFICIENCY

vs. LOAD CURRENT

LOAD CURRENT (A)

10

1

35

40

45

50

55

60

65

70

75

80

85

90

95

30

0.1

100

EFFICIENCY

vs. LOAD CURRENT

LOAD CURRENT (A)

10

1

35

40

45

50

55

60

65

70

75

80

85

90

95

100

30

0.1

100

OUTPUT VOLTAGE CHANGE

vs. LOAD CURRENT

LOAD CURRENT (A)

10

8

6

4

2

99.2

99.4

99.6

99.8

100.0

100.2

100.4

100.6

100.8

101.0

99.0

012

OUT1

vs. LOAD CURRENT

LOAD CURRENT (mA)

135

120

15 30 45

75 90

60

105

5.05

5.10

5.15

5.20

5.25

5.30

5.35

5.40

5.00

0150

vs. IN VOLTAGE

IN VOLTAGE (V)

24

20

16

12

8

4.15

4.30

4.45

4.60

4.75

4.90

5.05

5.20

5.35

5.50

4.00

428

vs. TEMPERATURE

TEMPERATURE (

°C)

30

35

10

-15

5.05

5.10

5.15

5.20

5.25

5.30

5.35

5.40

5.45

5.50

5.00

-40

85

SWITCHING FREQUENCY

Ω)

80

70

50

60

30

40

20

200

300

400

500

600

700

800

900

1000

1100

1200

1300

100

10

90

SWITCHING FREQUENCY

vs. TEMPERATURE

TEMPERATURE (

°C)

60

35

10

-15

250

300

350

400

450

500

550

600

650

700

750

800

200

-40

85

Ω

Ω

Ω

vs. SWITCHING FREQUENCY

SWITCHING FREQUENCY (kHz)

900

800

700

600

500

400

300

30

60

90

120

150

180

210

0

200

1000

Typical Operating Characteristics

(Supply = IN = 12V, unless otherwise noted. See

Typical Application Circuit of Figure 6.)