參數(shù)資料
型號(hào)： US3855BQ
英文描述： Analog IC
中文描述： 模擬IC
文件頁(yè)數(shù)： 2/13頁(yè)
文件大小： 265K
代理商： US3855BQ
SLUS212E NOVEMBER 1999 REVISED FEBRUARY 2004
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
VIN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction temperature
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature (soldering, 10 seconds)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.5 V
1.2 V to 6.0 V
65
°
C to 150
°
C
55
°
C to 150
°
C
300
°
C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
AVAILABLE OPTIONS(1)
PACKAGED DEVICES
TJ
TO-220 (T)
TO263 (TD)(2)
OUTPUT VOLTAGE
2.1 V
285T-2
OUTPUT VOLTAGE
2.1 V
285TD-2
1.5 V
285T-1
2.5 V
285T-3
1.2 V or ADJ
285T-ADJ
1.5 V
285TD-1
2.5 V
285TD-3
1.2 V or ADJ
285TD-ADJ
–40
°
C to 100
°
C
0
°
C to 100
°
C
385T-1
385T-2
385T-3
385T-ADJ
385TD-1
385TD-2
385TD-3
385TD-ADJ
1. For more package and ordering information, see the Package Option Addendum located at the end of this data sheet.
2. For 50 piece reel, add KTTT (e.g., UC285TDKTTT1); for 500 piece reel, add TR (e.g., UC285TDTR1).
electrical characteristics unless otherwise stated, these parameters apply for T
A
= 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, T
A
= T
J
.
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNIT
UC385-3 Fixed 2.5 V, 5-A Family
Output voltage
UC385-3
IVOUT = 100 mA
IVOUT = 100 mA
IVOUT = 10 mA to 5 A
2.475
2.5
2.525
V
UC285-3
2.45
2.5
2.525
V
Load regulation
0.5
4
mV
VIN PSRR
80
110
dB
VB PSRR
50
65
dB
VIN dropout voltage (VIN - VOUT)
IVOUT = 5 A,
IVOUT = 5 A
IVOUT = 5 A
IVOUT = 5 A
IVOUT = 5 A
TJ = 25
°
C
350
425
mV
UC385-3
350
490
mV
UC285-3
350
500
mV
VB dropout (VB - VOUT)
UC385-3
1.8
2.1
V
UC285-3
1.8
2.2
V
Short circuit current limit
VB current
5.1
7.5
A
IVOUT = 10 mA
IVOUT = 5 A
IVOUT = 5 A
8
15
mA
40
100
mA
VIN current
4.9
4.96
A
UC385-2 Fixed 2.1 V, 5-A Family
Output voltage
UC385-2
IVOUT = 100 mA
IVOUT = 100 mA
IVOUT = 10 mA to 5 A
2.079
2.1
2.121
V
UC285-2
2.058
2.1
2.121
V
Load regulation
0.5
4
mV
VIN PSRR
80
110
dB
VB PSRR
50
67
dB
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