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LM3243 bảng dữ liệu(PDF) 8 Page - Texas Instruments

tên linh kiện LM3243
Giải thích chi tiết về linh kiện  High-Current Step-Down Converter for 2G/3G/4G RF Power Amplifiers
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nhà sản xuất  TI1 [Texas Instruments]
Trang chủ  http://www.ti.com
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LM3243 bảng dữ liệu(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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