LTC3214 datasheet(4/12 Pages) LINER

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LTC3214

3214fa

3214 G12

VCPO

50mV/DIV

A/C COUPLED

500ns/DIV

VIN = 3.6V

ICPO = 400mA

3214 G11

VCPO

50mV/DIV

500ns/DIV

VIN = 3.6V

ICPO = 200mA

TYPICAL PERFOR A CE CHARACTERISTICS

1.5x Mode CPO Output Ripple

2x Mode CPO Output Ripple

Input Shutdown Current

vs Input Voltage

Oscillator Frequency

vs Supply Voltage

Efficiency vs VIN

ISET/ILED Current Ratio

vs ILED Current

VIN (V)

2.9

100

3.3

3.7

3.9

3215 G08

3.1

3.5

4.1

4.3

4.5

100mA

50mA

300mA

200mA

LED = AOT2015

VF = 2.9V TYP AT 100mA

ILED CURRENT (mA)

2700

2800

2900

3000

–40

°C

3100

200

100

300

400

500

3214 G09

3200

3300

°C

(TA = 25°C unless otherwise specified)

ILED Current vs Input Voltage

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

3214 G06

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

910

900

870

890

880

860

850

840

830

3214 G07

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)

600

500

400

300

200

100

3214 G10

2.9

4.5

3.3

3.7

4.1

3.1

3.5

3.9

4.3

72.2k

36.6k

17.4k

11.8k

7.15k

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