ADP2105ACPZ-1.2-R7 datasheet(10/32 Pages) AD

Part #	ADP2105ACPZ-1.2-R7

Description	1 Amp/1.5 Amp/2 Amp Synchronous, Step-Down DC-to-DC Converters

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ADP2105/ADP2106/ADP2107

Rev. 0 | Page 10 of 32

3.00

2.50

2.7

5.7

INPUT VOLTAGE (V)

2.95

2.90

2.85

2.80

2.75

2.70

2.65

2.60

2.55

3.0

3.3

3.6

3.9

4.2

4.5

4.8

5.1

5.4

ADP2107 (2A)

TA =25°C

Figure 22. Peak Current Limit of ADP2107

150

0

2.7

5.7

INPUT VOLTAGE (V)

3.0

3.3

3.6

3.9

4.2

4.5

4.8

5.1

5.4

135

120

105

90

75

60

45

30

15

VOUT =2.5V

VOUT =1.2V

VOUT =1.8V

TA = 25°C

Figure 23. Pulse Skipping Threshold vs. Input Voltage for ADP2106

4

3

1

LX NODE (SWITCH NODE)

OUTPUT VOLTAGE

INDUCTOR CURRENT

Δ: 260mV

@: 3.26V

CH1 1V

45.8%

CH4 1AΩ

CH3 5V

M 10µs

A CH1

1.78V

T

Figure 24. Short Circuit Response at Output

135

0

2.7

5.7

INPUT VOLTAGE (V)

120

105

90

75

60

45

30

15

3.0

3.3

3.6

3.9

4.2

4.5

4.8

5.1

5.4

VOUT =1.8V

VOUT =1.2V

VOUT =2.5V

TA =25°C

Figure 25. Pulse Skipping Threshold vs. Input Voltage for ADP2105

195

0

2.7

5.7

INPUT VOLTAGE (V)

3.0

3.3

3.6

3.9

4.2

4.5

4.8

5.1

5.4

180

165

150

135

120

105

90

75

60

45

30

15

VOUT =2.5V

VOUT =1.8V

VOUT =1.2V

TA =25°C

Figure 26. Pulse Skipping Threshold vs. Input Voltage for ADP2107

–40

JUNCTION TEMPERATURE (°C)

–20

0

20

40

60

80

100

120

0

20

40

60

80

100

120

140

PMOS POWER SWITCH

NMOS SYNCHRONOUS RECTIFIER

Figure 27. Switch On Resistance vs. Temperature

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ADP2105ACPZ-1.2-R7 Datasheet(PDF) 10 Page - Analog Devices

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