LTC1515CS8 datasheet(3/8 Pages) LINER

Part #	LTC1515CS8

Description	Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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3

LTC1515 Series

LTC1515-X 3.3V Output Voltage

vs Input Voltage

INPUT VOLTAGE (V)

0

120

100

80

60

40

20

8

1515 G06

2

4

6

10

85

°C

–40

°C

25

°C

VOUT = 5V

IOUT = 0mA

LTC1515-X Operating Current

vs Input Voltage

TYPICAL PERFORMANCE CHARACTERISTICS

LTC1515-X

5V Efficiency vs Output Current

OUTPUT CURRENT (mA)

0.01

1

10

1515 G02

0.1

100

80

60

40

20

0

VOUT = 5V

TA = 25°C

VIN = 8V

VIN = 3.3V

VIN = 6V

VIN = 2.7V

LTC1515-X 3.3V Output Voltage

Ripple vs Input Voltage

ELECTRICAL CHARACTERISTICS

VIN = 2V to 10V, SHDN = 3V, C1 = 0.22µF, CIN = COUT = 10µF unless otherwise noted (Note 2).

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

POR Leakage Current

VPOR = 5V

q

–1

1

µA

POR Trip Point (With Respect to VOUT)VOUT Ramping Negative

q

–10

– 7.5

–5

%

POR Trip Point Hysteresis

1%

IOUT Short-Circuit Current

VOUT = 0V

q

12

40

mA

tON

Soft Start Turn-On Time

4

ms

POR Delay

After VOUT Above POR Threshold

q

140

200

280

ms

The q denotes specifications which apply over the full operating

temperature range.

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

of the device may be impaired.

Note 2: For VIN ≥ 8V, COUT = 22µF.

INPUT VOLTAGE (V)

0

250

200

150

100

50

0

8

1515 G03

2

4

6

10

VOUT = 3.3V

IOUT = 10mA

TA = 25°C

COUT = 10µF

COUT = 22µF

COUT = 47µF

INPUT VOLTAGE (V)

0

250

200

150

100

50

0

8

1515 G04

2

4

6

10

VOUT = 5V

IOUT = 10mA

TA = 25°C

COUT = 10µF

COUT = 47µF

COUT = 22µF

LTC1515-X 5V Output Voltage

Ripple vs Input Voltage

LTC1515-X

3.3V Efficiency vs Output Current

OUTPUT CURRENT (mA)

0.01

1

10

1515 G01

0.1

100

80

60

40

20

0

VOUT = 3.3V

TA = 25°C

VIN = 2V

VIN = 4.4V

VIN = 2.7V

VIN = 6V

INPUT VOLTAGE (V)

0

3.45

3.40

3.35

3.30

3.25

3.20

8

1515 G05

2

4

6

10

VOUT = 3.3V

IOUT = 10mA

COUT = 10µF

TA = 25°C

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