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| 型號： | TL-SCSI285Y |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | FIXED-VOLTAGE REGULATORS FOR SCSI ACTIVE TERMINATION |
| 中文描述： | 固定用于SCSI主動終止電壓調節(jié)器 |
| 文件頁數(shù)： | 2/6頁 |
| 文件大小： | 82K |
| 代理商： | TL-SCSI285Y |
TL-SCSI285
FIXED-VOLTAGE REGULATORS
FOR SCSI ACTIVE TERMINATION
SLVS065F – NOVEMBER 1991 – REVISED JULY 1999
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating virtual junction temperature range (unless otherwise
noted)
Continuous input voltage, V
I
Operating virtual junction temperature range, T
J
Package thermal impedance,
θ
JA
(see Notes 1 and 2): KC package
7.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55
°
C to 150
°
C
22
°
C/W
83
°
C/W
260
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: KC or PW package
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
NOTES:
1. Maximum power dissipation is a function of TJ(max),
θ
JA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) – TA)/
θ
JA. Operating at the absolute maximum TJ of 150
°
C can impact reliability. Due to
variations in individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be
activated at power levels slightly above or below the rated dissipation.
2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
. . . . . . . . . . . . .
–65
°
C to 150
°
C
recommended operating conditions
TL-SCSI285
MIN
UNIT
MAX
Input voltage, VI
Input voltage, VI
TJ = 25
°
C
TJ = 0
°
C to 125
°
C
KC package
V
3.55
5.5
V
Output current IO
Output current, IO
0
620
mA
PW package
0
500
Operating virtual junction temperature range, TJ
0
125
°
C
electrical characteristics, V
I
= 4.5 V, I
O
= 500 mA, T
J
= 25
°
C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TL-SCSI285KC
UNIT
MIN
2.82
TYP
2.85
MAX
2.88
Output voltage
IO = 20 mA to 500 mA,
IO = 500 mA to 620 mA,
VI = 3.55 V to 5.5 V
f = 120 Hz,
VI = 3.55 V to 5.5 V,
VI = 3.65 V to 5.5 V,
TJ = 25
°
C
TJ = 0 to 125
°
C
V
2.79
2.91
Input regulation
5
15
mV
Ripple rejection
Vripple = 1 VO(PP)
–62
dB
Output regulation
IO = 20 mA to 620 mA
IO = 20 mA to 500 mA
f = 10 Hz to 100 kHz
5
30
mV
5
30
Output noise voltage
500
μ
V
Dropout voltage
IO = 500 mA
IO = 620 mA
IO = 0
IO = 27 mA, equivalent 1 line asserted
IO = 500 mA, equivalent 18 lines asserted (8-bit)
IO = 620 mA
0.7
V
0.8
2
5
Bias current
3
6
mA
26
37
49
62
Pulse-testing techniques are used to maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects
must be taken into account separately. All characteristics are measured with a 0.1-
μ
F capacitor across the input and a 22.0-
μ
F tantalum capacitor
with equivalent series resistance of 1.5
on the output.
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