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MAX864

Dual-Output Charge Pump with Shutdown

Maxim Integrated 

Dual-Output Charge Pump with Shutdown

____________________________Typical Operating Characteristics (continued)

(VIN = 5.0V, capacitor values in Table 1, TA = +25°C, unless otherwise noted.)

OUTPUT CURRENT vs. PUMP CAPACITANCE

(VIN = 4.75V, V+ + V- = 16V)

14

33kHz

12

10

100kHz

8

6

7kHz

185kHz

4

2

C1 = C2 = C3 = C4

0

0 5 10 15 20 25 30 35 40 45 50

PUMP CAPACITANCE (µF)

OUTPUT VOLTAGE RIPPLE

vs. PUMP CAPACITANCE

(VIN = 1.9V, V+ + V- = 6V)

400

C1 = C2 = C3 = C4

350

OUTPUT RIPPLE IS

300

MEASURED FOR THE

LOAD CURRENT INDICATED

250

IN THE "OUTPUT CURRENT

vs. PUMP CAPACITANCE"

200

GRAPH AT VIN = 1.9V.

150

33kHz

100kHz

100

185kHz 7kHz

50

0

0 5 10 15 20 25 30 35 40 45 50

PUMP CAPACITANCE (µF)

OUTPUT VOLTAGE RIPPLE

vs. PUMP CAPACITANCE

(VIN = 3.15V, V+ + V- = 10V)

600

C1 = C2 = C3 = C4

500

OUTPUT RIPPLE IS

MEASURED FOR THE

LOAD CURRENT INDICATED

400

IN THE "OUTPUT CURRENT

vs. PUMP CAPACITANCE"

300

7kHz GRAPH AT VIN = 3.15V.

100kHz

200

185kHz

33kHz

100

0

0 5 10 15 20 25 30 35 40 45 50

PUMP CAPACITANCE (µF)

OUTPUT VOLTAGE RIPPLE

vs. PUMP CAPACITANCE

(VIN = 4.75V, V+ + V- = 16V)

800

C1 = C2 = C3 = C4

700

OUTPUT RIPPLE IS

600

MEASURED FOR THE

LOAD CURRENT INDICATED

500

IN THE "OUTPUT CURRENT

vs. PUMP CAPACITANCE"

400

GRAPH AT VIN = 4.75V.

7kHz

300

100kHz

200

33kHz

185kHz

100

0

0 5 10 15 20 25 30 35 40 45 50

PUMP CAPACITANCE (µF)

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

600

500

400

300

200

100

0

1.0 2.0

3.0 4.0

5.0 6.0

SUPPLY VOLTAGE (V)

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

3.0

2.5

2.0

1.5

1.0

VIN = 5.0V

0.5

VIN = 3.3V

0

-55 -35 -15 5 25 45 65 85 105 125

TEMPERATURE (°C)

SUPPLY CURRENT vs. TEMPERATURE

(VIN = 3.3V)

7

6

FC1 = 1, FC0 = 1

5

4

FC1 = 1, FC0 = 0

3

2

FC1 = 0, FC0 = 1

1

FC1 = 0, FC0 = 0

0

-55 -35 -15 5 25 45 65 85 105 125

TEMPERATURE (°C)

SUPPLY CURRENT vs. TEMPERATURE

(VIN = 5V)

14

FC1 = 1, FC0 = 1

12

10

8

FC1 = 1, FC0 = 0

6

4

FC1 = 0, FC0 = 1

2

FC1 = 0, FC0 = 0

0

-55 -35 -15 5 25 45 65 85 105 125

TEMPERATURE (°C)

PUMP FREQUENCY

vs. TEMPERATURE

200

FC1 = 1, FC0 = 1

180

160

140

120

FC1 = 1, FC0 = 0

100

80

60

40

FC1 = 0, FC0 = 1

20

FC1 = 0, FC0 = 0

0

-55 -35 -15 5 25 45 65 85 105 125

TEMPERATURE (°C)

4 _______________________________________________________________________________________

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