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TPS40053PWPRG4 Fiches technique(PDF) 11 Page - Texas Instruments

No de pièce TPS40053PWPRG4
Description  IDE-INPUT SYNCHRONOUS BUCK CONTROLLER
Download  37 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS40053PWPRG4 Fiches technique(HTML) 11 Page - Texas Instruments

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TPS40050
TPS40051
TPS40053
SLUS540F − DECEMBER 2002 − REVISED JUNE 2004
www.ti.com
11
APPLICATION INFORMATION
UDG−03034
DA
CA
470 pF
RA
562 k
W
RKFF
182 k
W
1
2
3
4
16
15
14
13
ILIM
VIN
BOOST
HDRV
KFF
RT
BP5
SYNC
TPS40050PWP
TPS40051PWP
5
6
7
8
12
11
10
9
SW
BP10
LDRV
PGND
SGND
SS
VFB
COMP
VIN
+
PWP
1N914, 1N4150
Type Signal Diode
Figure 5. Hysteresis for Programmable UVLO
BP5 AND BP10 INTERNAL VOLTAGE REGULATORS
Start-up characteristics of the BP5 and BP10 regulators over different temperature ranges are shown in
Figures 6 and 7. Slight variations in the BP5 occurs dependent upon the switching frequency. Variation in the
BP10 regulation characteristics is also based on the load presented by switching the external MOSFETs.
28
46
12
10
1
2
3
4
5
6
INPUT VOLTAGE
vs
BP5 VOLTAGE
25
°C
110
°C
−55
°C
Figure 6.
VIN− Input Voltage − V
28
46
12
10
0
2
4
6
8
10
INPUT VOLTAGE
vs
BP10 VOLTAGE
Figure 7.
VIN− Input Voltage − V
−55
°C
110
°C
25
°C


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