4-54

TELCOM SEMICONDUCTOR, INC.

TC7660

CHARGE PUMP DC-TO-DC

VOLTAGE CONVERTER

TYPICAL CHARACTERISTICS (Cont.)

2

0

Output Voltage vs. Load Current

1

0

–1

–2

123

4

5

6

7

8

LOAD CURRENT (mA)

SLOPE 150

Ω

TA = +25°C

V+ = +2V

LOAD CURRENT (mA)

0

10

20

30

40

50

60

70

80

90

100

0

10

20

30

40

50

60

70

80

90

100

10

20

30

40

50

60

TA = +25°C

V+ = +5V

Supply Current and Power Conversion Efficiency vs. Load Current

0

LOAD CURRENT (mA)

10

20

30

40

50

60

70

80

90

100

1.5

3.0

4.5

6.0

7.5

9.0

0

2

4

6

8

10

12

14

16

18

20

TA = +25°C

V+ = 2V

OUTPUT CURRENT (mA)

0

0

Output Voltage vs. Output Current

–1

–2

–3

–4

–5

–6

–7

–8

–9

–10

10

20 30 40 50

60 70 80

90 100

TA = +25°C

LV OPEN

LOAD CURRENT (mA)

Output Voltage vs. Load Current

1

0

5

4

3

2

0

–1

–2

–3

–4

–5

10

20

30

40

50

60

70

80

TA = +25°C

V+ = +5V

SLOPE 55

Ω