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LM3253 Datasheet(PDF) 9 Page - Texas Instruments

Part # LM3253
Description  LM3253 High-Current Step-Down Converter for 2G/3G/4G RF Power Amplifiers
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM3253 Datasheet(HTML) 9 Page - Texas Instruments

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INPUT VOLTAGE (V)
DROPOUT
IOUT= 1.5A
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
VCON (V)
2.5X GAIN
0
200
400
600
800
1000
70
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100
LOAD CURRENT (mA)
VOUT = 1.6V
VOUT = 2.0V
VOUT = 2.5V
VOUT = 3.0V
VOUT = 3.5V
900
1200 1500 1800 2100 2400 2700
0
10
20
30
40
50
60
70
80
90
100
LOAD CURRENT (mA)
VOUT = 2.0V
VOUT = 2.5V
VOUT = 3.0V
VOUT = 3.5V
0
20
40
60
80 100 120 140 160
60
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70
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80
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LOAD CURRENT (mA)
VOUT = 1.0V
VOUT = 1.5V
VOUT = 2.0V
VOUT = 2.5V
VOUT = 3.0V
0
100 200 300 400 500 600 700 800
60
65
70
75
80
85
90
95
100
LOAD CURRENT (mA)
VOUT = 1.6V
VOUT = 2.0V
VOUT = 2.5V
VOUT = 3.0V
VOUT = 3.5V
LM3253
www.ti.com
SNVS791Q – FEBRUARY 2012 – REVISED MAY 2013
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs. Load Current
Efficiency vs. Load Current
VIN = 3.8V, IOUT = 10mA to 150mA
VIN = 3.8V, IOUT = 150mA to 750mA
Figure 2.
Figure 3.
Efficiency vs. Load Current
Efficiency vs. Load Current
VIN = 3.8V, IOUT = 100mA to 1A
VIN = 5V, IOUT = 1A to 2.5A
Figure 4.
Figure 5.
Output Voltage vs. Supply Voltage
Output Voltage vs. VCON Voltage
VOUT = 3.4V, VIN = 4.3V down to dropout
VIN = 4.2V, RLOAD = 6.8Ω, 0.16V < VCON < 1.4V
Figure 6.
Figure 7.
Copyright © 2012–2013, Texas Instruments Incorporated
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