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LM3243 Datasheet(PDF) 8 Page - Texas Instruments

Part # LM3243
Description  High-Current Step-Down Converter for 2G/3G/4G RF Power Amplifiers
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3243 Datasheet(HTML) 8 Page - Texas Instruments

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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
0
2
4
6
8
10
12
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.
8
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Product Folder Links: LM3243


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