LM3243 datasheet(8/29 Pages) TI1

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20 s/DIV

IOUT

2V/DIV

1A/DIV

VCON

2V/DIV

VOUT

20 s/DIV

5 mV/DIV

VOUT

50 mA/DIV

IOUT

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

INPUT VOLTAGE (V)

20 s/DIV

IOUT

2V/DIV

500 mA/DIV

VCON

2V/DIV

VOUT

3.0

3.5

4.0

4.5

5.0

5.5

6.0

2.50

2.55

2.60

2.65

2.70

2.75

2.80

2.85

2.90

2.95

3.00

INPUT VOLTAGE (V)

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

210

220

230

240

250

260

270

280

290

INPUT VOLTAGE (V)

LM3243

SNVS782B – OCTOBER 2010 – REVISED FEBRUARY 2013

www.ti.com

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

Center-Switching Frequency vs. Supply Voltage

Quiescent Current (PFM) vs. Supply Voltage

VOUT = 2.5V, IOUT = 700mA, VIN = 3.8V

VOUT = 1V, 2.7V < VIN< 5.5V (No Load)

Figure 7.

Figure 8.

Quiescent Current (PWM) vs. Supply Voltage

VCON Transient (3G/4G)

VOUT = 2.5V, 2.7V < VIN< 5.5V (No Load)

VOUT = 0V to 3V, RLOAD = 6.8Ω, VIN = 3.8V

Figure 9.

Figure 10.

VCON Transient (PWM)

Load Transient in PFM Mode

VOUT = 1.4V to 3.4V, RLOAD = 1.9Ω, VIN = 4.2V

VOUT = 1V, IOUT = 0mA to 60mA, VIN = 3.6V

Figure 11.

Figure 12.

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