參數(shù)資料
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(diào)節(jié)器
文件頁數(shù): 5/6頁
文件大?。?/td> 82K
代理商: TL-SCSI285Y
TL-SCSI285
FIXED-VOLTAGE REGULATORS
FOR SCSI ACTIVE TERMINATION
SLVS065F – NOVEMBER 1991 – REVISED JULY 1999
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
COMPENSATION CAPACITOR SELECTION INFORMATION
The TL-SCSI285 is a low-dropout regulator. This means that the capacitance loading is important to the
performance of the regulator because it is a vital part of the control loop. The capacitor value and the equivalent
series resistance (ESR) both affect the control loop and must be defined for the load range and the temperature
range. Figures 2 and 3 can be used to establish the capacitance value and ESR range for best regulator
performance.
0.02
0.015
0.005
00
0.5
1
1.5
2
2.5
1/ESR
3
0.025
0.035
3.5
4
4.5
5
0.01
0.03
IL – Load Current – A
2.4
2.2
2
1.8
1.6
E
2.6
2.8
3
0.04
1.2
0.8
0.6
0.4
0.2
1.4
ESR OF OUTPUT CAPACITOR
vs
LOAD CURRENT
STABILITY
vs
ESR
L
C
Applied Load
Current
Load
Voltage
IL
VL
Min ESR
Boundary
CL = 22.0
μ
F
CI = 0.1
μ
F
TJ = 25
°
C
400
μ
F
Figure 3
Max ESR Boundary
Not Recommended
Potential Instability
200
μ
F
Region of
Not Recommended
Potential Instability
Recommended Min ESR
22
F
Figure 2
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