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TPS40021 Datasheet(PDF) 18 Page - Texas Instruments

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Part # TPS40021
Description  ENHANCED LOW INPUT VOLTAGE MODE SYNCHRONOUS BUCK CONTROLLER
PDF  32 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS40021 Datasheet(HTML) 18 Page - Texas Instruments

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TPS40020
TPS40021
SLUS535C − MARCH 2003 − REVISED SEPTEMBER 2004
www.ti.com
18
TYPICAL CHARACTERISTICS
Figure 10
TJ − Junction Temperature − °C
MAXIMUM DUTY CYCLE
vs
JUNCTION TEMPERATURE
−50
93
−25
94
95
96
97
98
99
0
25
50
75
100
125
VDD = 3.3 V, RT = 69.8 kΩ
VDD = 5 V, RT = 35 kΩ
Figure 11
TJ − Junction Temperature − °C
OSCILLATOR FREQUENCY
vs
JUNCTION TEMPERATURE
−50
450
−25
950
650
700
800
900
1000
0
25
50
75
100
125
550
850
600
750
500
RT = 35 kΩ
RT = 69.8 kΩ
Figure 12
50
0.500
−50
−25
0
25
125
75
100
0.525
0.550
0.650
0.675
0.700
0.625
0.600
0.575
TJ − Junction Temperature − °C
SHUTDOWN SUPPLY CURRENT
vs
JUNCTION TEMPERATURE
Figure 13
TJ − Junction Temperature − °C
REFERENCE VOLTAGE
vs
JUNCTION TEMPERATURE
683
685
687
689
691
693
695
697
−50
−25
0
25
50
75
100
125



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