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TPS2480 Datasheet(PDF) 4 Page - Texas Instruments

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Part # TPS2480
Description  Positive Voltage Intelligent Protection Device Hotswap Controller and I2C Current Monitor
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS2480 Datasheet(HTML) 4 Page - Texas Instruments

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TPS2480
TPS2481
SLUS939A – APRIL 2010 – REVISED JUNE 2010
www.ti.com
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Supply Current (VCC)
Enabled
VEN = Hi VSENSE = VOUT = VVCC
450
1000
IVCC
mA
Disabled
VEN = Lo VSENSE = VVCC = VOUT = 0
90
250
Quiescent current
operating
0.7
1.0
mA
IVS
Quiescent current
Power down mode
6
15
mA
VPOR
Power On reset threshold
2
V
Current Sense Input (SENSE)
ISENSE
Input bias current
VSENSE = VVCC VOUT = VVCC
7.5
20
mA
Reference Voltage Output (VREF)
VREF
Reference voltage
0 < IVREF < 1 mA
3.9
4
4.1
V
Power Limiting Input (PROG)
Input bias current; device
IPROG
0 < VPROG < 4 V VEN = 48 V
5
mA
enabled; sourcing or sinking
Pulldown resistance; device
RPROG
IPROG = 200 mA; VEN = 0 V
375
600
disabled
Power Limiting and Current Limiting (SENSE)
Current sense threshold
VPROG = 2.4 V; VOUT = 0 V or VPROG = 0.9 V; VOUT
VCL
V(VCC-SENSE) with power
17
25
33
= 30 V; VVCC = 48 V
limiting trip
mV
Current sense threshold
VSENSE
V(VCC-sense) without power
VPROG = 4 V; VSENSE = VOUT
45
50
55
limiting trip
VPROG = 4 V; VOUT = VSENSE; V(VCC-SENSE): 0
Large overload response time
tF_TRIP
rising to 200 mV; C(GATE-OUT) = 2 nF; V(GATE-OUT) =
1.2
ms
to GATE low
1 V
Timer Operation (TIMER)
VTIMER = 0 V
15.0
25.0
34.0
ISOURCE
Charge current (sourcing)
VTIMER = 0 V; TJ = 25°C
20.0
25.0
30.0
mA
VTIMER = 5 V
1.50
2.5
3.70
ISINK
Discharge current (sinking)
VTIMER = 5 V; TJ = 25°C
2.10
2.5
3.10
TIMER upper threshold
3.9
4.0
4.1
voltage
V
TIMER lower reset threshold
TPS2481 only
0.96
1.0
1.04
voltage
DRETRY
Fault retry duty cycle
TPS2481 only
0.5%
0.75%
1.0%
Gate Drive Output (GATE)
IGATE
GATE sourcing current
VSENSE = VVCC; V(GATE-OUT) = 7 V; VEN = Hi
15
22
35
mA
VEN = Lo; VGATE = VVCC
1.8
2.4
2.8
GATE sinking current
mA
VEN = Hi; VGATE = VVCC; V(VCC-SENSE)³ 200 mV
75
125
250
VGATE-OUT GATE output voltage
12
16
V
Propagation delay: EN going
VEN = 0 → 2.5 V, 50% of VEN to 50% of VGATE,
tD_ON
25
40
true to GATE output high
VOUT = VVCC, R(GATE-OUT) = 1 MOhm
Propagation delay: EN going
VEN = 2.5 V → 0 V, 50% of VEN to 50% of VGATE,
tD_OFF
false (0 V) to GATE output
0.5
1
ms
VOUT = VVCC, R(GATE-OUT) = 1 MΩ, tFALL < 0.1 ms
low
Propagation delay: TIMER
VTIMER: 0 → 5 V, tRISE < 0.1 ms. 50% of VTIMER to
0.8
1
expires to GATE output low
50% of VGATE, VOUT = VCC , R(GATE-OUT) = 1 MΩ,
4
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Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2480 TPS2481


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