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LM21305 Folha de dados(PDF) 7 Page - Texas Instruments

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Nome de Peças LM21305
Descrição Electrónicos  5A Adjustable Frequency Synchronous Buck Regulator
Download  33 Pages
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

LM21305 Folha de dados(HTML) 7 Page - Texas Instruments

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background image
-40
-20
0
20
40
60
80
100
0
10
20
30
40
50
60
70
TEMPERATURE (°C)
High-Side RDSon(m )
Low-Side RDSon(m )
0
20 40 60 80 100 120 140 160 180
0
200
400
600
800
1000
1200
1400
1600
1800
RFRQ(k )
-40°C
25°C
125°C
-40
-20
0
20
40
60
80
100
-1.0
-0.5
0.0
0.5
1.0
TEMPERATURE (°C)
3
6
9
12
15
18
5
6
7
8
9
10
INPUT VOLTAGE (V)
-40°C
25°C
85°C
0
1
2
3
4
5
-0.10
-0.05
0.00
0.05
0.10
LOAD CURRENT (A)
3
6
9
12
15
18
-0.10
-0.05
0.00
0.05
0.10
INPUT VOLTAGE, PVIN (V)
LM21305
www.ti.com
SNVS639F – DECEMBER 2009 – REVISED MARCH 2013
Typical Performance Characteristics (continued)
Unless otherwise specified: VIN = 12V, VOUT = 3.3V, fS = 500 kHz, TA = 25°C, L = 3.3 µH, COUT = 100 µF ceramic.
Load Regulation (%)
Line Regulation (%)
Figure 8.
Figure 9.
VOUT Regulation (%) vs. Temperature
Quiescent Current, Not Switching
Figure 10.
Figure 11.
High-Side and Low-Side MOSFET RDSon vs. Temperature
Switching Frequency vs. RFRQ
Figure 12.
Figure 13.
Copyright © 2009–2013, Texas Instruments Incorporated
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