LM3243_14 datasheet(10/29 Pages) TI1

Part #	LM3243

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

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Manufacturer	TI1 [Texas Instruments]

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20 s/DIV

2V/DIV

VOUT

2V/DIV

VSW

2V/DIV

EN

40 s/DIV

2V/DIV

VOUT

2V/DIV

VSW

1A/DIV

Inductor

Current

LM3243

SNVS782B – OCTOBER 2010 – REVISED FEBRUARY 2013

www.ti.com

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

Startup in PWM Mode

Timed-Current Limit

VIN = 4.2V, VOUT = 3.4V, No Load, EN = LOW to HIGH

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

Figure 19.

Figure 20.

10

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