LTC3205 datasheet(4/16 Pages) LINER

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LTC3205

3205f

TYPICAL PERFOR A CE CHARACTERISTICS

2:3 Mode CPO Voltage

vs Load Current

1:1 Mode Switch Resistance

vs Temperature

2:3 Mode Charge Pump Open-

Loop Output Resistance vs

Temperature (3/2VIN – VCPO)/ICPO

TEMPERATURE (

°C)

–40

0.8

0.9

3205 G04

0.7

0.6

–15

1.0

ICPO = 100mA

VIN = 3.3V

VIN = 3.9V

VIN = 3.6V

TEMPERATURE (

°C)

–40

2.0

2.2

2.4

2.6

2.8

3.0

3.2

–15

3205 G05

VIN = 3V

VCPO = 4.2V

CIN = CCPO = CFLY1 = CFLY2 = 1µF

LOAD CURRENT (mA)

4.4

4.6

4.8

200

3205 G06

4.2

4.0

4.3

4.5

4.7

4.1

3.9

3.8

100

150

250

VIN = 3.6V

VIN = 3.4V

VIN = 3.0V

VIN = 3.3V

VIN = 3.2V

VIN = 3.1V

TA = 25°C

VIN = 3.5V

2:3 Mode CPO Voltage in

Current Limit

DVCC Shutdown Current

vs DVCC

DVCC VOLTAGE (V)

2.7

0.1

0.2

0.3

0.4

0.5

3.0

3.3

3.6

3.9

3205 G08

4.2

4.5

VIN = DVCC

TA = –40°C

TA = 85°C

TA = 25°C

VIN Shutdown Current

vs Input Voltage

VIN INPUT VOLTAGE (V)

2.7

0.2

0.4

0.6

0.8

1.0

3.0

3.3

3.6

3.9

3205 G09

4.2

4.5

DVCC = VIN

TA = –40°C

TA = 85°C

TA = 25°C

2:3 Mode Supply Current

vs ICPO (IIN – 3/2ICPO)

LOAD CURRRENT (mA)

100

3205 G10

150

200

VIN = 3.6V

TA = 25°C

INPUT VOLTAGE (V)

2.7

3.3

3.6

3.9

3205 G12

4.2

4.5

TA = 25°C

IMS = IRGB = 0µA

1:1 Mode No Load Supply Current

vs VIN

Oscillator Frequency

vs VIN Voltage

VIN VOLTAGE (V)

2.7

600

700

800

900

1000

3.0

3.3

3.6

3.9

3205 G07

4.2

4.5

TA = –40°C

TA = 85°C

TA = 25°C

LOAD CURRENT (mA)

0.5

1.0

1.5

2.5

3.5

4.5

2.0

3.0

4.0

5.0

100

300

3205 G13

600

200

500

400

VIN = 4.2V

TA = 25°C

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