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TPS54428DDAR Datasheet(PDF) 9 Page - Texas Instruments

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Part # TPS54428DDAR
Description  4.5V to 18 V Input, 4-A Synchronous Step-Down SWIFT??Converter with Eco-Mode?
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54428DDAR Datasheet(HTML) 9 Page - Texas Instruments

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0
5
10
15
20
EN Input Voltage - V
V = 18 V
I
0
5
10
15
20
25
30
35
40
45
50
1
1.025
1.05
1.075
1.1
0
1
2
3
4
I
- Output Current - A
O
V = 18 V
I
V = 5 V
I
V = 12 V
I
100
s/div
m
Vout (50 mV/div)
Iout (2 A/div)
1.04
1.05
1.06
1.07
1.08
0
5
10
15
20
V - Input Voltage - V
I
I = 10 mA
O
I = 1 A
O
1 ms/div
EN (10 V/div)
VREG5 (5 V/div)
Vout (0.5 V/div)
40
50
60
70
80
90
100
V
= 1.8 V
O
V
= 2.5 V
O
V
= 3.3 V
O
1
2
3
4
5
I - Output Current - A
O
0
TPS54428
www.ti.com
SLVSB42A
– NOVEMBER 2011 – REVISED JANUARY 2012
TYPICAL CHARACTERISTICS (continued)
VIN = 12 V, TA = 25
°C (unless otherwise noted)
Figure 3. EN CURRENT vs EN VOLTAGE
Figure 4. 1.05V OUTPUT VOLTAGE vs OUTPUT CURRENT
Figure 5. 1.05V OUTPUT VOLTAGE vs VIN VOLTAGE
Figure 6. 1.05V LOAD TRANSIENT RESPONSE
Figure 7. START UP WAVEFORM
Figure 8. EFFICIENCY vs OUTPUT CURRENT
Copyright
© 2011–2012, Texas Instruments Incorporated
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9
Product Folder Link(s) :TPS54428


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