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LM21305 Fiches technique(PDF) 6 Page - Texas Instruments

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No de pièce LM21305
Description  5A Adjustable Frequency Synchronous Buck Regulator
Download  34 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM21305 Fiches technique(HTML) 6 Page - Texas Instruments

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LOAD CURRENT (A)
VOUT = 3.3V
VOUT = 1.8V
VOUT = 1.2V
VOUT = 0.8V
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LOAD CURRENT (A)
VOUT = 5V
VOUT = 3.3V
VOUT = 1.8V
VOUT = 1.2V
VOUT = 0.8V
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75
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85
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LOAD CURRENT (A)
VOUT = 3.3V
VOUT = 1.8V
VOUT = 1.2V
VOUT = 0.8V
0
1
2
3
4
5
50
55
60
65
70
75
80
85
90
95
100
LOAD CURRENT (A)
VOUT = 5V
VOUT = 3.3V
VOUT = 1.8V
VOUT = 1.2V
VOUT = 0.8V
0
1
2
3
4
5
50
55
60
65
70
75
80
85
90
95
100
LOAD CURRENT (A)
VOUT = 3.3V
VOUT = 1.8V
VOUT = 1.2V
VOUT = 0.8V
0
1
2
3
4
5
50
55
60
65
70
75
80
85
90
95
100
LOAD CURRENT (A)
VOUT = 5V
VOUT = 3.3V
VOUT = 1.8V
VOUT = 1.2V
VOUT = 0.8V
LM21305
SNVS639F – DECEMBER 2009 – REVISED MARCH 2013
www.ti.com
Typical Performance Characteristics
Unless otherwise specified: VIN = 12V, VOUT = 3.3V, fS = 500 kHz, TA = 25°C, L = 3.3 µH, COUT = 100 µF ceramic.
Efficiency with PVIN = AVIN = 5V, fS = 300 kHz
Efficiency with PVIN = AVIN = 12V, fS = 300 kHz
Figure 2.
Figure 3.
Efficiency with PVIN = AVIN = 5V, fS = 500 kHz
Efficiency with PVIN = AVIN = 12V, fS = 500 kHz
Figure 4.
Figure 5.
Efficiency with PVIN = AVIN = 5V, fS = 1 MHz
Efficiency with PVIN = AVIN = 12V, fS = 1 MHz
Figure 6.
Figure 7.
6
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