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UC285 Fiches technique(PDF) 3 Page - Texas Instruments

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No de pièce UC285
Description  FAST TRANSIENT RESPONSE 5A LOW-DROPOUT REGULATOR
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

UC285 Fiches technique(HTML) 3 Page - Texas Instruments

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UC2851, UC2852, UC2853, UC285ADJ, UC3851, UC3852, UC3853, UC385ADJ
FAST TRANSIENT RESPONSE 5A
LOW DROPOUT REGULATOR
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
3
www.ti.com
electrical characteristics unless otherwise stated, these parameters apply for TA = −40°C to 100°C
for the UC285-x series and 0
°C to 100°C for the UC385-x, VB = 5 V; VIN = 3.3 V, VOUT = 2.5 V, TA = TJ.
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNIT
UC385−2 Fixed 2.1 V, 5-A Family (continued)
VIN dropout voltage (VIN - VOUT)
IVOUT = 5 A,
TJ = 25°C
350
425
mV
VIN dropout voltage (VIN - VOUT)
UC385-2
IVOUT = 5 A
350
490
mV
UC285-2
IVOUT = 5 A
350
500
mV
VB dropout (VB - VOUT)
UC385-2
IVOUT = 5 A
1.8
2.1
V
VB dropout (VB - VOUT)
UC285-2
IVOUT = 5 A
1.8
2.2
V
Short circuit current limit
5.1
7.5
A
VB current
IVOUT = 10 mA
8
15
mA
VB current
IVOUT = 5 A
40
100
mA
VIN current
IVOUT = 5 A
4.9
4.96
A
UC385−1 Fixed 1.5 V, 5-A Family
Output voltage
UC385-1
IVOUT = 100 mA
1.485
1.5
1.515
V
Output voltage
UC285-1
IVOUT = 100 mA
1.470
1.5
1.515
V
Load regulation
IVOUT = 10 mA to 5 A
0.5
4
mV
VIN PSRR
80
110
dB
VB PSRR
50
65
dB
VIN dropout voltage (VIN - VOUT)
IVOUT = 5 A,
TJ = 25°C
350
425
mV
VIN dropout voltage (VIN - VOUT)
UC285-1
IVOUT 5 A
350
490
mV
UC285-2
IVOUT = 5 A
350
500
mV
VB dropout (VB - VOUT)
UC385-1
IVOUT = 5 A
1.8
2.1
V
VB dropout (VB - VOUT)
UC285-1
IVOUT = 5 A
1.8
2.2
V
Short circuit current limit
5.1
7.5
A
VB current
IVOUT = 10 mA
8
15
mA
VB current
IVOUT = 5 A
40
100
mA
VIN = current
IVOUT = 5 A
4.9
4.96
A
UC385-ADJ Adjustable, 5-A Family
ADJ voltage
UC385-ADJ
IVOUT - 100 mA
1.188
1.2
1.212
V
ADJ voltage
UC285-ADJ
IVOUT - 100 mA
1.176
1.2
1.212
V
Load regulation
IVOUT = 10 mA to 5 A
0.5
4
mV
VIN PSRR
VOUT programmed for 2.5 V
80
110
dB
VB PSRR VOUT
Programmed for 2.5 V
50
65
dB
VIN dropout voltage (VIN - VOUT)
IVOUT = 5 A,
TJ = 25°C
350
425
mV
VIN dropout voltage (VIN - VOUT)
UC385-ADJ
IVOUT = 5 A
350
490
mV
UC285-ADJ
IVOUT = 5 A
350
500
mV
VB dropout (VB - VOUT)
UC385-ADJ
IVOUT = 5 A
1.8
2.1
V
VB dropout (VB - VOUT)
UC285-ADJ
IVOUT = 5 A
1.8
2.2
V
Short circuit current limit
5.1
7.5
A
VB current
IVOUT = 10 mA
8
15
mA
VB current
IVOUT = 5 A
40
100
mA
VIN current
IVOUT = 5 A
4.9
4.96
A


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