TPS2550_0807 Datasheet, PDF (3/31 Pages) Texas Instruments – ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

TPS2550
TPS2551
www.ti.com .................................................................................................................................................... SLVS736A – FEBRUARY 2008 – REVISED JULY 2008
RECOMMENDED OPERATING CONDITIONS
V_IN
V_EN
V_/EN
I_OUT
R_ILIM
I_/FAULT
T_J
Input voltage, IN
Enable voltage
TPS2550
TPS2551
Continuous output current, OUT
Current-limit set resistor from ILIM to GND
FAULT sink current
Operating virtual junction
temperature
DRV
DBV
MIN
MAX UNIT
2.5
6.5 V
0
6.5
V
0
6.5
0
1.1 A
14.3
80.6 kΩ
0
10 mA
–40
105
°C
–40
125
ELECTRICAL CHARACTERISTICS
over recommended operating junction temperature range, 2.5 V ≤ V_IN ≤ 6.5 V, R_ILIM = 14.3 kΩ, V_/EN = 0 V, or V_EN = 5.0 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS⁽¹⁾
POWER SWITCH
r_DS(on)
Static drain-source on-state resistance
t_r
Rise time, output
t_f
Fall time, output
ENABLE INPUT EN OR EN
DBV package, T_J = 25 °C
DBV package, –40 °C ≤T_J ≤125 °C
DRV package, T_J = 25 °C
DRV package, –40 °C ≤T_J ≤105 °C
V_IN = 6.5 V
V_IN = 2.5 V
V_IN = 6.5 V
C_L = 1 µF, R_L = 100 Ω,
(see Figure 2)
V_IN = 2.5 V
V_IH
High-level input voltage
V_IL
Low-level input voltage
I_EN
Input current
t_on
Turnon time
t_off
Turnoff time
CURRENT LIMIT
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 Figure 2)
I_OS
Short-circuit current, OUT connected to GND
I_OC
Current-limit threshold (Maximum DC output current I_OUT delivered to load)
t_IOS
Response time to short circuit
REVERSE-VOLTAGE PROTECTION
V_IN = 5.0 V (see Figure 3)
R_ILIM = 80.6 kΩ
R_ILIM = 38.3 kΩ
R_ILIM = 15 kΩ
R_ILIM = 80.6 kΩ
R_ILIM = 38.3 kΩ
R_ILIM = 15 kΩ
Reverse-voltage comparator trip point
(V_OUT – V_IN)
Time from reverse-voltage condition to
MOSFET turn off
V_IN = 5.0 V
SUPPLY CURRENT
I_{IN_off}
I_{IN_on}
I_REV
Supply current, low-level output
Supply current, high-level output
Reverse leakage current
V_IN = 6.5 V, No load on OUT, V_EN = 6.5 V or V_EN = 0 V, 14.3 kΩ
≤ R_ILIM ≤ 80.6 kΩ
V_IN = 6.5 V, No load on OUT, V_EN = 0 V or
V_EN = 6.5 V
R_ILIM = 15 kΩ
R_ILIM = 80.6 kΩ
V_OUT = 6.5 V, V_IN = 0 V
T_J = 25 °C
MIN TYP
85
100
1.0
0.65
0.2
0.2
1.1
–0.5
110
300
1050
290
620
1550
215
500
1400
315
665
1650
2
95 135
3
5
0.1
0.01
MAX UNIT
95
135
mΩ
115
145
1.5
1.0
ms
0.5
0.5
V
0.66
0.5 µA
3 ms
3 ms
300
650
1650
mA
340
705
1750
µs
190 mV
7 ms
1 µA
150 µA
130 µA
1 µA
(1) Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account
separately.
Copyright © 2008, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Link(s): TPS2550 TPS2551