Datasheet
Table Of Contents
- FEATURES
- DESCRIPTION
- FUNCTIONAL BLOCK DIAGRAMS
- DETAILED DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- DISSIPATION RATING TABLE
- RECOMMENDED OPERATING CONDITIONS
- ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING JUNCTION TEMPERATURE RANGE
- ENABLE INPUT ENx OR ENx
- CURRENT LIMIT
- SUPPLY CURRENT (TPS2045A, TPS2055A)
- SUPPLY CURRENT (TPS2046A, TPS2056A)
- SUPPLY CURRENT (TPS2047A, TPS2057A)
- SUPPLY CURRENT (TPS2048A, TPS2058A)
- UNDERVOLTAGE LOCKOUT
- OVERCURRENT OC
- PARAMETER MEASUREMENT INFORMATION
- TYPICAL CHARACTERISTICS
- APPLICATION INFORMATION
- POWER-SUPPLY CONSIDERATIONS
- OVERCURRENT
- OC RESPONSE
- POWER DISSIPATION AND JUNCTION TEMPERATURE
- THERMAL PROTECTION
- UNDERVOLTAGE LOCKOUT (UVLO)
- UNIVERSAL SERIAL BUS (USB) APPLICATIONS
- HOST/SELF-POWERED AND BUS-POWERED HUBS
- LOW-POWER BUS-POWERED FUNCTIONS AND HIGH-POWER BUS-POWERED FUNCTIONS
- USB POWER-DISTRIBUTION REQUIREMENTS
- GENERIC HOT-PLUG APPLICATIONS (see )

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TYPICAL CHARACTERISTICS
2
4
6
8
10
2.5 3 3.5 4 4.5 5 5.5 6
Turnon Delay Time − ms
V
I
− Input Voltage − V
C
L
= 1 µF
R
L
= 20 Ω
T
A
= 25°C
3.3
3
2.7
2.4
2.5 3 3.5 4 4.5
Turnon Delay Time − ms
3.6
3.9
5 5.5 6
V
I
− Input Voltage − V
C
L
= 1 µF
R
L
= 20 Ω
T
A
= 25°C
1.3
1.4
1.5
1.6
1.8
1.9
2.5 3 3.5 4 4.5 5 5.5 6
− Fall Time − ms
f
t
V
I
− Input Voltage − V
1.7
C
L
= 1 µF
R
L
= 20 Ω
T
A
= 25°C
2
2.1
2.3
2.5
2.7
2.5 3 3.5 4 4.5 5 5.5 6
− Rise Time − msr
t
V
I
− Input Voltage − V
2.2
2.4
2.6
C
L
= 1 µF
R
L
= 20 Ω
T
A
= 25°C
TPS2045A , , TPS2046A
TPS2047A , TPS2048A , TPS2055A
TPS2056A , TPS2057A , TPS2058A
SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008
TURNON DELAY TIME TURNOFF DELAY TIME
vs vs
INPUT VOLTAGE INPUT VOLTAGE
Figure 12. Figure 13.
RISE TIME FALL TIME
vs vs
INPUT VOLTAGE INPUT VOLTAGE
Figure 14. Figure 15.
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Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A