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SLVS841A – NOVEMBER 2008 – REVISED DECEMBER 2008
RECOMMENDED OPERATING CONDITIONS
MIN
V
IN
V
EN
V
/EN
V
IH
V
IL
I
OUT
R
ILIM
I
O
Input voltage, IN
Enable voltage
High-level input voltage on EN or EN
Low-level input voltage on EN or EN
Continuous output current, OUT
Current-limit threshold resistor range (nominal 1%) from ILIM to GND
Continuous FAULT sink current
Input de-coupling capacitance, IN to GND
T
J
Operating virtual junction
temperature
DRV and DBV
0
19.1
0
0.1
–40
125
TPS2552/52-1
TPS2553/53-1
2.5
0
0
1.1
0.66
1.2
232
10
MAX
6.5
6.5
6.5
UNIT
V
V
V
A
kΩ
mA
µF
°C
ELECTRICAL CHARACTERISTICS
over recommended operating junction temperature range, 2.5 V
≤
V
IN
≤
6.5 V, 19.1 kΩ
≤
R
ILIM
≤
232 kΩ, V
/EN
= 0 V, or V
EN
=
V
IN
, R
FAULT
= 10 kΩ (unless otherwise noted)
PARAMETER
POWER SWITCH
DBV package, T
J
= 25 °C
DBV package, –40 °C
≤T
J
≤125
°C
r
DS(on)
Static drain-source on-state resistance DRV package, T
J
= 25 °C
DRV package, –40 °C
≤T
J
≤105
°C
DRV package, –40 °C
≤T
J
≤125
°C
t
r
t
f
Rise time, output
V
IN
= 6.5 V
V
IN
= 2.5 V
V
IN
= 6.5 V
V
IN
= 2.5 V
C
L
= 1
µF,
R
L
= 100
Ω,
(see
0.2
0.2
1.1
0.7
100
85
95
135
115
140
150
1.5
1.0
0.5
0.5
ms
mΩ
TEST CONDITIONS
(1)
MIN
TYP
MAX
UNIT
Fall time, output
ENABLE INPUT EN OR EN
Enable pin turn on/off threshold
I
EN
t
on
t
off
Input current
Turnon time
Turnoff time
V
EN
= 0 V or 6.5 V, V
/EN
= 0 V or 6.5 V
C
L
= 1
µF,
R
L
= 100
Ω,
(see
0.66
–0.5
1.1
0.5
3
3
V
µA
ms
ms
CURRENT LIMIT
R
ILIM
=
20 kΩ
I
OS
Current-limit threshold (Maximum DC output current I
OUT
delivered to load) &
Short-circuit current, OUT connected to GND
R
ILIM
=
49.9 kΩ
T
J
= 25 °C
–40 °C
≤T
J
≤125
°C
T
J
= 25 °C
–40 °C
≤T
J
≤125
°C
1215
1200
490
475
110
50
1295
1295
520
520
130
75
2
1375
1375
550
565
150
100
µs
mA
R
ILIM
= 210 kΩ
ILIM shorted to IN
t
IOS
Response time to short circuit
V
IN
= 5.0 V (see
REVERSE-VOLTAGE PROTECTION
Reverse-voltage comparator trip point
(V
OUT
– V
IN
)
Time from reverse-voltage condition
to MOSFET turn off
V
IN
= 5.0 V
95
3
135
5
190
7
mV
ms
(1)
Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account
separately.
Copyright © 2008, Texas Instruments Incorporated
3
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