LM3243_14 datasheet(9/29 Pages) TI1

Il numero della parte	LM3243

Spiegazioni elettronici	High-Current Step-Down Converter for 2G/3G/4G RF Power Amplifiers

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Produttore elettronici	TI1 [Texas Instruments]

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100 s/DIV

50 mV/DIV

VOUT

1V/DIV

VIN

20 s/DIV

2V/DIV

VOUT

1V/DIV

VSW

2V/DIV

EN

100 Ps/DIV

100 mV/

DIV

VOUT

IOUT

500 mA/

DIV

100 s/DIV

50 mV/DIV

VOUT

1V/DIV

VIN

100 Ps/DIV

20 mV/

DIV

VOUT

200 mA/

DIV

IOUT

100 Ps/DIV

50 mV/

DIV

VOUT

500 mA/

DIV

IOUT

LM3243

www.ti.com

SNVS782B – OCTOBER 2010 – REVISED FEBRUARY 2013

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

Load Transient in PWM Mode

VIN = 3.8V, VOUT = 2.5V, IOUT = 0mA to 300mA

VIN = 3.8V, VOUT = 3.0V, IOUT = 0mA to 700mA

Figure 13.

Figure 14.

Load Transient in PWM Mode

Line Transient

VIN = 4.2V, VOUT = 3.0V, IOUT = 0mA to 1.2A

VIN = 3.6V to 4.2V, VOUT = 2.5V, RLOAD = 6.8Ω

Figure 15.

Figure 16.

Line Transient

Startup in PFM Mode

VIN = 3.6V to 4.2V, VOUT = 1.0V, RLOAD = 6.8Ω

VIN = 3.8V, VOUT = 1.0V, No Load, EN = LOW to HIGH

Figure 17.

Figure 18.

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