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TPS2490 Fiches technique(PDF) 7 Page - Texas Instruments

No de pièce TPS2490
Description  Positive High-Voltage Power-Limiting Hot Swap Controller
Download  36 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS2490 Fiches technique(HTML) 7 Page - Texas Instruments

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TPS2490, TPS2491
www.ti.com
SLVS503E – NOVEMBER 2003 – REVISED FEBRUARY 2017
Product Folder Links: TPS2490 TPS2491
Submit Documentation Feedback
Copyright © 2003–2017, Texas Instruments Incorporated
Electrical Characteristics (continued)
unless otherwise noted, minimum and maximum limits apply across the recommended operating junction temperature and
voltage range, VTIMER = 0 V, and all outputs unloaded; typical specifications are at TJ = 25°C, VVCC = 48 V, VTIMER = 0 V, and
all outputs unloaded; positive currents are into pins.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ENABLE INPUT (EN)
VEN_H
Threshold, VEN going high
1.32
1.35
1.38
V
VEN_L
Threshold, VEN going low
1.22
1.25
1.28
V
VEN hysteresis
100
mV
Leakage current
VEN = 48 V
1
µA
INPUT SUPPLY UVLO (VCC)
VVCC turn on
Rising
8.4
8.8
V
VVCC turn off
Falling
7.5
8.3
V
Hysteresis
75
mV
6.6 Switching Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER LIMITING AND CURRENT LIMITING (SENSE)
tF_TRIP
Large overload response time to
GATE low
VPROG = 4 V, VOUT = VSENSE,
V(VCC-SENSE): 0 → 200 mV,
C(GATE-OUT) = 2 nF, V(GATE-OUT) = 1
V
1.2
µs
GATE DRIVE OUTPUT (GATE)
tD_ON
Propagation delay: EN going true to
GATE output high
VEN = 0 → 2.5 V, 50% of VEN to
50% of VGATE, VOUT = VVCC, R(GATE-
OUT)= 1 MΩ
25
40
µs
tD_OFF
Propagation delay: EN going false (0
V) to GATE output low
VEN = 2.5 V → 0, 50% of VEN to
50% of VGATE, VOUT = VVCC,
R(GATE-OUT)= 1 MΩ, tFALL < 0.1 µs
0.5
1
µs
Propagation delay: TIMER expires to
GATE output low
VTIMER: 0 → 5 V, tRISE < 0.1 µs, 50%
of VTIMER to 50% of VGATE, VOUT =
VVCC, R(GATE-OUT) = 1 MΩ,
0.8
1
µs
POWER GOOD OUTPUT (PG)
tDPG
PG deglitch delay, detection to
output, rising and falling edges
VSENSE = VVCC
5
9
15
ms


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