LTC1550 datasheet(3/12 Pages) LINER

Part #	LTC1550

Description	Low Noise, Switched Capacitor Regulated Voltage Inverters

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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3

LTC1550/LTC1551

VCC = 4.5V to 6.5V, C1 = C2 = 0.1µF, COUT = 10µF, TA = 25°C unless otherwise specified. (Note 3)

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VOUT

Output Regulation

3.05V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 5mA

q

– 2.625

– 2.5

– 2.375

V

(LTC1550CGN/LTC1550IGN)

3.45V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 10mA

q

– 2.625

– 2.5

– 2.375

V

4.1V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 20mA

q

– 2.625

– 2.5

– 2.375

V

VOUT

Output Regulation

3.45V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 5mA

q

– 3.15

– 3.0

– 2.85

V

(LTC1550CGN/LTC1550IGN)

3.85V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 10mA

q

– 3.15

– 3.0

– 2.85

V

4.5V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 20mA

q

– 3.15

– 3.0

– 2.85

V

VOUT

Output Regulation

3.9V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 5mA

q

– 3.675

– 3.5

– 3.325

V

(LTC1550CGN/LTC1550IGN)

4.2V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 10mA

q

– 3.675

– 3.5

– 3.325

V

4.85V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 20mA

q

– 3.675

– 3.5

– 3.325

V

VOUT

Output Regulation

4.5V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 5mA

q

– 4.3

– 4.1

– 3.9

V

(LTC1550CGN/LTC1550IGN)

4.75V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 10mA

q

– 4.3

– 4.1

– 3.9

V

5.35V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 20mA

q

– 4.3

– 4.1

– 3.9

V

VOUT

Output Regulation

4.8V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 5mA

q

– 4.725

– 4.5

– 4.275

V

(LTC1550CGN/LTC1550IGN)

5.1V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 10mA

q

– 4.725

– 4.5

– 4.275

V

5.7V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 20mA

q

– 4.725

– 4.5

– 4.275

V

VOUT

Output Regulation

4.5V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 5mA

q

– 4.3

– 4.1

– 3.9

V

(LTC1550CS8-4.1/LTC1551CS8-4.1)

4.75V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 10mA

q

– 4.3

– 4.1

– 3.9

V

5.35V

≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 20mA

q

– 4.3

– 4.1

– 3.9

V

ISC

Output Short-Circuit Current

VOUT = 0V, VCC = 5V

q

50

150

mA

VOUT = 0V, VCC = 6.5V

q

80

200

mA

VRIPPLE

Output Ripple Voltage

1mV

The q denotes specifications which apply over the specified

temperature range.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: All currents into device pins are positive; all currents out of device

pins are negative. All voltages are referenced to ground unless otherwise

specified. All typicals are given at TA = 25°C.

Note 3: C-grade device specifications are guaranteed over the 0

°C to 70°C

temperature range. In addition, C-grade device specifications are assured

over the – 40

°C to 85°C temperature range by design or correlation, but

are not production tested.

TYPICAL PERFORMANCE CHARACTERISTICS

TEMPERATURE (˚C)

–45

875

925

975

15

55

LTC1550/51 G01

825

775

–25

–5

35

75

95

725

675

VOUT = –4.1V

VCC = 5V

OUTPUT CURRENT (mA)

0

–3.6

–3.8

–4.0

–4.2

–3.4

–3.0

5

10

15

20

LTC1550/51 G03

25

30

–3.2

TA = 25°C

VCC = 4.5V

VCC = 5V

VCC = 6.5V

Supply Current vs Temperature

TEMPERATURE (

°C)

–45

3.0

3.5

4.5

5.0

5.5

–25

15

35

95

LTC1550/51 G02

4.0

–5

55

75

6.0

VOUT = –4.1V

VCC = 5V

Oscillator Frequency

vs Temperature

Output Voltage vs Output Current

(LTC1550CS8-4.1/LTC1551CS8-4.1)

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