LTC3216 datasheet(4/12 Pages) LINER

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LTC3216

3216fc

TYPICAL PERFORMANCE CHARACTERISTICS

Input Shutdown Current

vs Input Voltage

Oscillator Frequency

vs Supply Voltage

Efﬁciency vs VIN

ISET/ILED Current Ratio vs ILED

Current

1.5x Mode CPO Output Ripple

1x Mode Charge Pump Open-

Loop Output Resistance vs

Temperature

1.5x Mode Charge Pump

Open-Loop Output Resistance

(1.5VIN – VCPO)/ICPO vs Temperature

2x Mode Charge Pump

Open-Loop Output Resistance

(2VIN – VCPO)/ICPO vs Temperature

(TA = 25°C unless otherwise speciﬁed)

TEMPERATURE (°C)

–40

3216 G04

–15

0.31

0.29

0.27

0.25

0.23

0.21

0.19

0.17

0.15

ICPO = 200mA

VIN = 3.6V

VIN = 3.3V

VIN = 3.9V

TEMPERATURE (°C)

–40

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

3216 G05

–15

VIN = 3V

VCPO = 4.2V

CIN = C1 = C2 = 2.2μF

CCPO = 4.7μF

–40

–15

TEMPERATURE (°C)

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

3216 G06

VIN = 3V

VCPO = 4.8V

CIN = C1 = C2 = 2.2μF

CCPO = 4.7μF

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

3216 G07

INPUT VOLTAGE (V)

2.9

4.5

3.3

3.7

4.1

3.1

3.5

3.9

4.3

TA = 85°C

TA = –40°C

TA = 25°C

930

920

910

900

890

880

870

860

850

840

3216 G08

SUPPLY VOLTAGE (V)

2.9

4.5

3.3

3.7

4.1

3.1

3.5

3.9

4.3

TA = 85°C

TA = –40°C

TA = 25°C

VIN (V)

2.8

100

3.2

3.6

3.8

3216 G09

3.0

3.4

4.0

4.2

4.4

LED = LXCL-PWF1 LUMILEDS

600mA

ILED = 800mA

400mA

200mA

ILED CURRENT(mA)

200

400 500

900

3216 G10

100

300

600 700 800

3400

3350

3300

3250

3200

3150

3100

TA = 85°C

TA = –40°C

TA = 25°C

3216 G11

VCPO

50mV/DIV

A/C COUPLED

500ns/DIV

VIN = 3.6V

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