ADP2140 datasheet(7/32 Pages) AD

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Data Sheet

ADP2140

Rev. B | Page 7 of 32

TYPICAL PERFORMANCE CHARACTERISTICS

BUCK OUTPUT

VIN1 = 4 V, VOUT = 1.8 V, IOUT = 10 mA, CIN = COUT = 10 µF, TA = 25°C, unless otherwise noted.

2.3

2.8

3.3

3.8

4.3

4.8

5.3

INPUT VOLTAGE (V)

–40°C

–5°C

+25°C

+85°C

+125°C

Figure 4. Quiescent Supply Current vs. Input Voltage, Different Temperatures

3.1

2.5

2.6

2.7

2.8

2.9

3.0

2.3

2.8

3.3

3.8

4.3

4.8

5.3

INPUT VOLTAGE (V)

–40°C

–5°C

+25°C

+85°C

+125°C

Figure 5. Switching Frequency vs. Input Voltage, Different Temperatures

3.10

2.60

2.65

2.70

2.75

2.80

2.85

2.90

2.95

3.00

3.05

–60

–40

–20

100

120

140

TEMPERATURE (°C)

5.5V

4.6V

3.1V

2.3V

Figure 6. Switching Frequency vs. Temperature, Different Input Voltages

1.82

1.76

1.77

1.78

1.79

1.80

1.81

–40

125

–5

JUNCTION TEMPERATURE (°C)

LOAD CURRENT = 1mA

LOAD CURRENT = 10mA

LOAD CURRENT = 50mA

LOAD CURRENT = 100mA

LOAD CURRENT = 300mA

LOAD CURRENT = 600mA

Figure 7. Output Voltage vs. Temperature, VIN1 = 2.3 V, Different Loads

1200

700

750

800

850

900

950

1000

1050

1100

1150

–60

–40

–20

100

120

140

JUNCTION TEMPERATURE (°C)

2.3V

3.0V

4.0V

5.0V

5.5V

Figure 8. Current Limit vs. Temperature, Different Input Voltages

140

100

120

3.50

5.50

5.25

5.00

4.75

4.50

4.25

4.00

3.75

INPUT VOLTAGE (V)

–40°C

–5°C

+25°C

+85°C

+125°C

Figure 9. PSM to PWM Mode Transition vs. Input Voltage, Different

Temperatures

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