Datasheet
www.ti.com
RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS
TPS2045B , TPS2055B
TPS2046B , TPS2047B
SLVS532C – JULY 2004 – REVISED OCTOBER 2007
MIN MAX UNIT
V
I(IN)
, V
I(INx)
Input voltage 2.7 5.5 V
V
I(/ENx)
, V
I(ENx)
Input voltage 0 5.5 V
I
O(OUT)
, I
O(OUTx)
Continuous output current 0 250 mA
T
J
Operating virtual junction temperature -40 125 ° C
over recommended operating junction temperature range, V
I(IN)
= 5.5 V, I
O
= 0.25 A, V
I( ENx)
= 0 V (unless otherwise noted)
PARAMETER TEST CONDITIONS
(1)
MIN TYP MAX UNIT
POWER SWITCH
Static drain-source on-state resistance,
V
I(IN)
= 5 V or 3.3 V, I
O
= 0.25 A – 40 ° C ≤ T
J
≤ 125 ° C 70 135 m Ω
5-V operation and 3.3-V operation
r
DS(on)
Static drain-source on-state resistance,
V
I(IN)
= 2.7 V, I
O
= 0.25 A – 40 ° C ≤ T
J
≤ 125 ° C 75 150 m Ω
2.7-V operation
(2)
V
I(IN)
= 5.5 V 0.6 1.5
t
r
(2)
Rise time, output
V
I(IN)
= 2.7 V 0.4 1
C
L
= 1 μ F,
T
J
= 25 ° C ms
R
L
= 20 Ω
V
I(IN)
= 5.5 V 0.05 0.5
t
f
(2)
Fall time, output
V
I(IN)
= 2.7 V 0.05 0.5
ENABLE INPUT ENx
V
IH
High-level input voltage 2.7 V ≤ V
I(IN)
≤ 5.5 V 2
V
V
IL
Low-level input voltage 2.7 V ≤ V
I(IN)
≤ 5.5 V 0.8
I
I
Input current V
I(/ENx)
= 0 V or 5.5 V -0.5 0.5 μ A
t
on
(2)
Turnon time C
L
= 100 μ F, R
L
= 20 Ω 3
ms
t
off
(2)
Turnoff time C
L
= 100 μ F, R
L
= 20 Ω 10
CURRENT LIMIT
V
I(IN)
= 5 V, OUT connected to GND, device enabled into
I
OS
Short-circuit output current 0.3 0.5 0.7 A
short-circuit
SUPPLY CURRENT (TPS2045B, TPS2055B)
T
J
= 25 ° C 0.5 1
No load on OUT, V
I(/ENx)
= 5.5 V
Supply current, low-level output μ A
or V
I(/ENx)
= 0 V
– 40 ° C ≤ T
J
≤ 125 ° C 0.5 5
T
J
= 25 ° C 43 60
No load on OUT, V
I(/ENx)
= 0 V
Supply current, high-level output μ A
or V
I(/ENx)
= 5.5 V
– 40 ° C ≤ T
J
≤ 125 ° C 43 70
OUT connected to ground,
Leakage current – 40 ° C ≤ T
J
≤ 125 ° C 1 μ A
V
I(/ENx)
= 5.5 V, or V
I(ENx)
= 0 V
Reverse leakage current V
I(OUTx)
= 5.5 V, IN = ground
(2)
T
J
= 25 ° C 0 μ A
SUPPLY CURRENT (TPS2046B)
T
J
= 25 ° C 0.5 1
Supply current, low-level output No load on OUT, V
I(/ENx)
= 5.5 V μ A
– 40 ° C ≤ T
J
≤ 125 ° C 0.5 5
T
J
= 25 ° C 50 70
Supply current, high-level output No load on OUT, V
I(/ENx)
= 0 V μ A
-40 ° C ≤ T
J
≤ 125 ° C 50 90
OUT connected to ground,
Leakage current -40 ° C ≤ T
J
≤ 125 ° C 1 μ A
V
I(ENx)
= 5.5 V
Reverse leakage current V
I(OUTx)
= 5.5 V, IN = ground
(2)
T
J
= 25 ° C 0.2 μ A
(1) Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account
separately.
(2) Not tested in production, specified by design.
Copyright © 2004 – 2007, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Link(s): TPS2045B TPS2055B TPS2046B TPS2047B