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TPS54226RGTT Datasheet(PDF) 3 Page - Texas Instruments

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No. de pieza TPS54226RGTT
Descripción Electrónicos  4.5V to 18V Input, 2-A Synchronous Step-Down SWIFTTM Converter with Eco-Mode
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54226RGTT Datasheet(HTML) 3 Page - Texas Instruments

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TPS54226
www.ti.com
SLVSA14E
– OCTOBER 2009 – REVISED JULY 2011
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
VCC
Supply input voltage range
4.5
18
V
VIN
Power input voltage range
2
18
V
VBST
–0.1
24
VBST (vs SW1, SW2)
–0.1
5.7
SS, PG
–0.1
5.7
EN
–0.1
18
VI
Input voltage range
V
VO, VFB
–0.1
5.5
SW1, SW2
–1.8
18
SW1, SW2 (10 ns transient)
–3
18
PGND1, PGND2
–0.1
0.1
VO
Output voltage range
VREG5
–0.1
5.7
V
IO
Output Current range
IVREG5
0
10
mA
TA
Operating free-air temperature
–40
85
°C
TJ
Operating junction temperature
–40
125
°C
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range, VCC,VIN = 12V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
VCC current, TA = 25°C, EN = 5 V,
IVCC
Operating - non-switching supply current
800
1200
μA
VFB = 0.8 V
IVCCSDN
Shutdown supply current
VCC current, TA = 25°C, EN = 0 V
1.8
10
μA
LOGIC THRESHOLD
VENH
EN high-level input voltage
EN
1.5
V
VENL
EN low-level input voltage
EN
0.4
V
VFB VOLTAGE AND DISCHARGE RESISTANCE
VFB voltage light load mode, TA = 25°C,
771
VO = 1.05 V, IO=10mA
TA = 25°C, VO = 1.05 V, continuous mode
757
765
773
VFBTH
VFB threshold voltage
mV
TA = 0°C to 85°C, VO = 1.05 V, continuous
753
777
mode(1)
TA = –40°C to 85°C, VO = 1.05 V, continuous
751
779
mode(1)
IVFB
VFB input current
VFB = 0.8 V, TA = 25°C
0
±0.1
μA
RDischg
VO discharge resistance
EN = 0 V, VO = 0.5 V, TA = 25°C
50
100
VREG5 OUTPUT
TA = 25°C, 6 V < VCC < 18 V,
VVREG5
VREG5 output voltage
5.3
5.5
5.7
V
0
< IVREG5 < 5 mA
VLN5
Line regulation
6.0 V
< VCC < 18 V, IVREG5 = 5 mA
20
mV
VLD5
Load regulation
0 mA
< IVREG5 < 5 mA
100
mV
IVREG5
Output current
VCC = 6 V, VREG5 = 4 V, TA = 25°C
70
mA
MOSFET
Rdsonh
High side switch resistance
25
°C, VBST - SW1,2 = 5.5 V
160
m
Rdsonl
Low side switch resistance
25
°C
110
m
CURRENT LIMIT
Iocl
Current limit
L out = 2.2
μH(1)
2.5
3.1
4.5
A
(1)
Not production tested.
Copyright
© 2009–2011, Texas Instruments Incorporated
3
Product Folder Link(s): TPS54226


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