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LM2642 Datasheet(PDF) 12 Page - Texas Instruments

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Part # LM2642
Description  LM2642 Two-Phase Synchronous Step-Down Switching Controller
PDF  31 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM2642 Datasheet(HTML) 12 Page - Texas Instruments

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40
1.E-02
1.E-01
1.E+00
1.E+01
LOAD CURRENT(A)
VIN=7V
VIN=22V
VIN=12V
50
60
70
80
90
100
40
1.E-02
1.E-01
1.E+00
1.E+01
LOAD CURRENT(A)
VIN=7V
VIN=22V
VIN=12V
50
60
70
80
90
100
700.0
JUNCTION TEMPEARTURE (
oC)
650.0
600.0
550.0
500.0
450.0
400.0
-40 -20
0
20
40
60 80 100 120 140
40
1.E-02
1.E-01
1.E+00
1.E+01
LOAD CURRENT(A)
VIN=7V
VIN=22V
VIN=12V
50
60
70
80
90
100
-40
-20
0
20
40
60
80
100
120
TEMPERATURE (
oC)
1.234
1.236
1.238
1.240
1.242
1.244
1.232
320
315
310
305
300
295
290
-40
-20
0
20
40
60
80
100 120
285
280
275
270
TEMPERATURE (
oC)
LM2642
SNVS203I – MAY 2002 – REVISED APRIL 2013
www.ti.com
FB Reference Voltage
Operating Frequency
vs
vs
Temperature
Temperature
Figure 16.
Figure 17.
Efficiency
Error Amplifier Gain
vs
vs
Load Current
Temperature
Ch.1 = 5V, Ch.2 = Off
Figure 18.
Figure 19.
Efficiency
Efficiency
vs
vs
Load Current
Load Current
Ch.2 = 2.5V, Ch.1 = Off
Ch.2 = 3.3V, Ch.1 = Off
Figure 20.
Figure 21.
12
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Copyright © 2002–2013, Texas Instruments Incorporated
Product Folder Links: LM2642



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