Datasheet
TPS2540, TPS2540A
TPS2541, TPS2541A
www.ti.com
SLVSAG2C –OCTOBER 2010– REVISED OCTOBER 2011
ELECTRICAL CHARACTERISTICS
Conditions are -40 ≤ T
J
≤ 125°C unless otherwise noted. V
EN
(if TPS2540 or TPS2540A) = V
DSC
(if TPS2541 or TPS2541A) =
V
IN
= 5 V, R
FAULT
= 10 kΩ, R
ILIM0
= 210 kΩ, R
ILIM1
= 20 kΩ, I
LIM_SEL
= 0 V, CTL1 = CTL2 = GND, CTL3 = V
IN
(TPS2540/40A) or
CTL3 = GND (TPS2541/41A), unless otherwise noted. Positive currents are into pins. Typical values are at 25°C. All voltages
are with respect to GND unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Power Switch
I
OUT
= 2 A, V
ILIM_SEL
= Logic HI 73 120
I
OUT
= 100 mA, V
ILIM_SEL
= Logic LO 73 120
Static drain-source
R
DS(on)
mΩ
on-state resistance
-40°C ≤ T
A
= T
J
≤ 85°C, I
OUT
= 2 A, V
ILIM_SEL
= Logic HI 73 105
T
A
= T
J
= 25°C, I
OUT
= 2 A, V
ILIM_SEL
= Logic HI 73 84
t
r
Rise time, output C
L
= 1 µF, RL = 100 Ω, (see Figure 27, Figure 28) 1 1.5
ms
t
f
Fall time, output C
L
= 1 µF, RL = 100 Ω, (see Figure 27, Figure 28) 0.2 0.5
OUT discharge
R
DIS
400 500 630 Ω
resistance
I
REV
Reverse leakage current V
OUT
= 5.5 V, V
IN
= V
EN
= 0 V , T
J
= 25°C 0 1 µA
Enable Input EN (TPS2540/40A), Output Discharge Input DSC (TPS2541/41A)
Enable pin turn on/off
V
EN
0.9 1.1 1.65 V
threshold, falling
V
EN_HYS
EN Hysteresis 200 mV
I
EN
Input current V
EN
= 0 V or 5.5 V -0.5 0.5 µA
DSC pin turn on/off
V
DSC
0.9 1.1 1.65 V
threshold, falling
V
DSC_HYS
DSC Hysteresis 200 mV
I
DSC
Input current V
DSC
= 0 V or 5.5 V -0.5 0.5 µA
t
ON
Turn-on time C
L
= 1 µF, R
L
= 100 Ω(see Figure 27, Figure 29) 3.4 5
ms
t
OFF
Turn-off time C
L
= 1 µF, R
L
= 100 Ω(see Figure 27, Figure 29) 1.7 3
Current Limit
I
LIM_SEL
turn on/off
V
ILIM_SEL
0.9 1.1 1.65 V
threshold, falling
V
ILIM_HYS
I
LIM_SEL
Hysteresis 200 mV
ILIM_SEL input current V
ILIM_SEL
= 0 V or 5.5 V -0.5 0.5 µA
R
ILIM0
= 210 kΩ 185 230 265
V
ILIM_SEL
= Logic LO
R
ILIM0
= 100 kΩ 420 480 530
R
ILIM1
= 20 kΩ 2150 2430 2650
Maximum DC output
I
SHORT
V
ILIM_SEL
= Logic HI mA
current from IN to OUT
R
ILIM1
= 16.9 kΩ 2550 2840 3100
R
ILIM0
= 698 kΩ
V
ILIM_SEL
= Logic LO 25 55 85
-40 ≤ T
J
≤ 85°C
Response time to
t
IOS
V
IN
= 5.0 V (see Figure 30) 1.5 µs
short-circuit
Supply Current
Supply current, switch
I
CCL
V
EN
= V
DSC
= 0 V, OUT grounded, -40 ≤ T
J
≤ 85°C 0.1 2
disabled
V
ILIM_SEL
= Logic
150 185 µA
HI
I
CCH
Supply current, operating V
EN
= V
DSC
= V
IN
,
V
ILIM_SEL
= Logic
130 170
LOW
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