ADP5037 datasheet(10/28 Pages) AD

Part #	ADP5037

Description	Dual 3 MHz, 800 mA Buck Regulators with Two 300 mA LDOs

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ADP5037

Data Sheet

Rev. D | Page 10 of 28

0

10

20

30

40

50

60

70

80

90

100

0.001

0.01

0.1

1

IOUT (A)

–40°C

+25°C

+85°C

Figure 15. BUCK1 Efficiency vs. Load Current, Across Temperature,

VIN = 3.9 V, VOUT1 = 3.3 V, Auto Mode

0

10

20

30

40

50

60

70

80

90

100

0.001

0.01

0.1

1

IOUT (A)

+85°C

+25°C

–40°C

Figure 16. BUCK2 Efficiency vs. Load Current, Across Temperature,

VOUT2 = 1.8 V, Auto Mode

0

10

20

30

40

50

60

70

80

90

100

0.001

0.01

0.1

1

IOUT (A)

+85°C

+25°C

–40°C

Figure 17. BUCK1 Efficiency vs. Load Current, Across Temperature

VOUT1 = 0.8 V, Auto Mode

2.5

2.6

2.7

2.8

2.9

3.0

3.1

3.2

3.3

0

0.2

0.4

0.6

0.8

1.0

1.2

IOUT (A)

+85°C

+25°C

–40°C

Figure 18. BUCK2 Switching Frequency vs. Output Current, Across

Temperature, VOUT2 = 1.8 V, PWM Mode

2

4

T

1

CH1 50.0mV

M 4.00µs

A CH2

240mA

T 28.40%

CH2 500mA Ω

CH4 2.00V

ISW

VOUT

SW

Figure 19. Typical Waveforms, VOUT1 = 3.3 V, IOUT1 = 30 mA, Auto Mode

2

4

T

1

CH1 50.0mV BW

M 4.00µs

A CH2

220mA

T 28.40%

CH2 500mA Ω

CH4 2.00V BW

ISW

VOUT

SW

Figure 20. Typical Waveforms, VOUT2 = 1.8 V, IOUT2 = 30 mA, Auto Mode

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