LTC660 datasheet(3/12 Pages) LINER

Part #	LTC660

Description	100mA CMOS Voltage Converter

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC660

TYPICAL PERFORMANCE CHARACTERISTICS (Using Test Circuit in Figure 1)

Output Voltage and Efficiency

vs Load Current, V + = 5V

LOAD CURRENT (mA)

0

–3.8

–3.4

–3.0

80

LTC660 • TPC06

–4.2

–4.6

–5.0

84

92

100

76

68

80

88

96

72

64

60

20

40

60

10

90

30

50

70

100

LTC660

EFFICIENCY

LTC660

OUTPUT VOLTAGE

TA = 25°C

BOOST = OPEN

OSCILLATOR FREQUENCY (kHz)

0.1

40

50

60

70

80

1

10

100

LTC660 • TPC03

30

20

10

0

90

100

C1 = C2 = 22

µF

C1 = C2 = 150

µF

C1 = C2 = 1500

µF

TA = 25°C

V+ = 5V

BOOST = OPEN

Output Resistance

vs Oscillator Frequency

LOAD CURRENT (mA)

0

90

100

80

LTC660 • TPC07

80

70

85

95

75

65

60

20

40

60

10

90

30

50

70

100

V+ = 5.5V

TA = 25°C

BOOST = OPEN

V+ = 4.5V

V+ = 3.5V

V+ = 2.5V

V+ = 1.5V

Efficiency vs Load Current

SUPPLY VOLTAGE (V)

0

2

6

8

10

2

18

LTC690 • TPC04

4

13

4

5

6

12

14

16

TA = 25°C

BOOST = OPEN

Output Resistance

vs Supply Voltage

TEMPERATURE (

°C)

–60

15

20

25

100

LTC660 • TPC05

10

5

0

–20

20

60

140

80

–40

0

40

120

V+ = 1.5V

BOOST = OPEN

V+ = 3V

V+ = 5V

Output Resistance vs Temperature

Output Voltage Drop

vs Load Current

LOAD CURRENT (mA)

0

0.8

1.0

80

LTC660 • TPC09

0.6

0.4

0.7

0.9

0.5

0.3

0.2

0.1

0

20

40

60

10

90

30

50

70

100

V+ = 5.5V

TA = 25°C

BOOST = OPEN

V+ = 2.5V

V+ = 1.5V

V+ = 3.5V

V+ = 4.5V

Efficiency vs Load Current

LOAD CURRENT (mA)

0

90

100

80

LTC660 • TPC08

80

70

85

95

75

65

60

20

40

60

10

90

30

50

70

100

V+ = 5.5V

TA = 25°C

BOOST = V+

V+ = 3.5V

V+ = 2.5V

V+ = 1.5V

V+ = 4.5V

SUPPLY VOLTAGE (V)

1.5

0

50

100

150

200

2.5

3.5

4.5

5.5

LTC660 • G01

250

300

23

4

5

BOOST = V+

BOOST = OPEN

TA = 25°C

Supply Current vs Supply Voltage

OSCILLATOR FREQUENCY (kHz)

10

100

1000

0.01

1

10

1000

LTC660 • G02

1

0.1

100

TA = 25°C

V+ = 5V

Supply Current

vs Oscillator Frequency

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