Datasheet
TPS2552, TPS2553
TPS2552-1, TPS2553-1
SLVS841E –NOVEMBER 2008– REVISED FEBRUARY 2012
www.ti.com
RECOMMENDED OPERATING CONDITIONS
MIN MAX UNIT
V
IN
Input voltage, IN 2.5 6.5 V
V
EN
TPS2552/52-1 0 6.5
Enable voltage V
V
EN
TPS2553 /53-1 0 6.5
V
IH
High-level input voltage on EN or EN 1.1
V
V
IL
Low-level input voltage on EN or EN 0.66
–40 °C ≤ T
J
≤ 125 °C 0 1.2
I
OUT
Continuous output current, OUT A
–40 °C ≤ T
J
≤ 105 °C 0 1.5
R
ILIM
Current-limit threshold resistor range (nominal 1%) from ILIM to GND 15 232 kΩ
I
O
Continuous FAULT sink current 0 10 mA
Input de-coupling capacitance, IN to GND 0.1 μF
I
OUT
≤ 1.2 A –40 125
Operating virtual junction
T
J
°C
temperature
(1)
I
OUT
≤ 1.5 A -40 105
(1) See "Dissipation Rating Table" and "Power Dissipation and Junction Temperature" sections for details on how to calculate maximum
junction temperature for specific applications and packages.
ELECTRICAL CHARACTERISTICS
over recommended operating conditions, V
EN
= 0 V, or V
EN
= V
IN
, R
FAULT
= 10 kΩ (unless otherwise noted)
PARAMETER TEST CONDITIONS
(1)
MIN TYP MAX UNIT
POWER SWITCH
DBV package, T
J
= 25°C 85 95
DBV package, –40°C ≤T
J
≤125°C 135
r
DS(on)
Static drain-source on-state resistance DRV package, T
J
= 25°C 100 115 mΩ
DRV package, –40°C ≤T
J
≤105°C 140
DRV package, –40°C ≤T
J
≤125°C 150
V
IN
= 6.5 V 1.1 1.5
t
r
Rise time, output
V
IN
= 2.5 V 0.7 1
C
L
= 1 μF, R
L
= 100 Ω,
ms
(see Figure 2)
V
IN
= 6.5 V 0.2 0.5
t
f
Fall time, output
V
IN
= 2.5 V 0.2 0.5
ENABLE INPUT EN OR EN
Enable pin turn on/off threshold 0.66 1.1 V
I
EN
Input current V
EN
= 0 V or 6.5 V, V
EN
= 0 V or 6.5 V –0.5 0.5 μA
t
on
Turnon time 3 ms
C
L
= 1 μF, R
L
= 100 Ω, (see Figure 2)
t
off
Turnoff time 3 ms
CURRENT LIMIT
R
ILIM
= 15 kΩ –40°C ≤T
J
≤105°C 1610 1700 1800
T
J
= 25°C 1215 1295 1375
R
ILIM
= 20 kΩ
–40°C ≤T
J
≤125°C 1200 1295 1375
Current-limit threshold (Maximum DC output current I
OUT
delivered to
I
OS
T
J
= 25°C 490 520 550 mA
load) and Short-circuit current, OUT connected to GND
R
ILIM
= 49.9 kΩ
–40°C ≤T
J
≤125°C 475 520 565
R
ILIM
= 210 kΩ 110 130 150
ILIM shorted to IN 50 75 100
t
IOS
Response time to short circuit V
IN
= 5 V (see Figure 3) 2 μs
REVERSE-VOLTAGE PROTECTION
Reverse-voltage comparator trip point
95 135 190 mV
(V
OUT
– V
IN
)
Time from reverse-voltage condition to
V
IN
= 5 V 3 5 7 ms
MOSFET turn off
(1) Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account
separately.
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