CMOS Monolithic Voltage Converter

4

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14

0

1.5

2.5

4.5

OUTPUT SOURCE RESISTANCE

vs. SUPPLY VOLTAGE

8

12

SUPPLY VOLTAGE (V)

3.5

10

6

4

2

2.0

3.0

4.0

5.5

5.0

76

0.1

10

100

EFFICIENCY

vs. OSCILLATOR FREQUENCY

96

OSCILLATOR FREQUENCY (kHz)

1

88

60

100

92

84

80

72

68

64

100

0

1.0

OSCILLATOR FREQUENCY

vs. SUPPLY VOLTAGE

20

80

SUPPLY VOLTAGE (V)

3.5

40

1.5

2.0

4.0

60

2.5

3.0

4.5

5.0 5.5

FC = V+, OSC = OPEN

LV = GND

LV = OPEN

12

0

1.5

5.5

OSCILLATOR FREQUENCY

vs. SUPPLY VOLTAGE

2

10

SUPPLY VOLTAGE (V)

4.5

6

4

2.5

3.5

8

LV = GND

LV = OPEN

FC = OPEN, OSC = OPEN

100

0.01

1

100

OSCILLATOR FREQUENCY

vs. EXTERNAL CAPACITANCE

0.1

CAPACITANCE (pF)

1

10

10

1000

FC = OPEN

FC = V+

10000

100

0

-60

140

OSCILLATOR FREQUENCY

vs. TEMPERATURE

20

80

TEMPERATURE (°C)

0

60

40

-40 -20

100

20

40

60 80

120

FC = V+, OSC = OPEN, RL = 100

Ω

12

0

-60

140

OSCILLATOR FREQUENCY

vs. TEMPERATURE

2

10

TEMPERATURE (°C)

80

6

4

0

20

100

8

-40 -20

40 60

120

FC = OPEN, OSC = OPEN

30

0

-60

140

OUTPUT SOURCE RESISTANCE

vs. TEMPERATURE

5

25

TEMPERATURE (°C)

0

15

10

-40 -20

20

20

40 60

80 100 120

V+ = 5.0V

C1, C2 = 150

µF ALUMINUM

ELECTROLYTIC

CAPACITORS

V+ = 3.0V

V+ = 1.5V

_____________________________Typical Operating Characteristics (continued)

30

0

-60

140

OUTPUT SOURCE RESISTANCE

vs. TEMPERATURE

5

25

TEMPERATURE (°C)

0

15

10

-40 -20

20

20

40 60

80 100 120

C1, C2 = 150

µF OS-CON CAPACITORS

V+ = 5.0V

V+ = 1.5V

V+ = 3.0V

100

0

1.0

OSCILLATOR FREQUENCY

vs. SUPPLY VOLTAGE

20

80

SUPPLY VOLTAGE (V)

3.5

40

1.5

2.0

4.0

60

2.5

3.0

4.5

5.0 5.5

FC = V+, OSC = OPEN

LV = GND

LV = OPEN