ADM660/ADM8660

REV. A

–5–

CHARGE-PUMP FREQUENCY – kHz

5

4.5

0

1

1000

10

100

2

1.5

1

0.5

3

2.5

4

3.5

LOAD = 1mA

LOAD = 10mA

LOAD = 50mA

LOAD = 80mA

Figure 7. Output Voltage vs. Charge-Pump Frequency

SUPPLY VOLTAGE – Volts

30

25

0

1.5

6.5

2.5

3.5

4.5

5.5

20

15

10

5

Figure 8. Output Source Resistance vs. Supply Voltage

SUPPLY VOLTAGE – Volts

30

0

1.5

3.5

5.5

20

10

2.5

4.5

6.5

LV = GND

LV = OPEN

FC = OPEN

OSC = OPEN

C1, C2 = 10µF

Figure 9. Charge-Pump Frequency vs. Supply Voltage

TEMPERATURE –

°C

35

15

0

–40

–20

20

40

60

80

30

25

10

5

20

LV = GND

FC = OPEN

C1, C2 = 10µF

0

Figure 10. Charge-Pump Frequency vs. Temperature

CAPACITANCE – pF

1k

0.1

11k

10

100

10

1

100

FC = V+

LV = GND

FC = OPEN

LV = GND

Figure 11. Charge-Pump Frequency vs. External

Capacitance

SUPPLY VOLTAGE – Volts

140

0

37

3.5

4

4.5

5

5.5

6

6.5

120

80

60

40

20

100

LV = GND

LV = OPEN

FC = V+

OSC = OPEN

C1, C2 = 2.2µF

Figure 12. Charge-Pump Frequency vs. Supply Voltage