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參數資料
| 型號： | TK71590AS |
| 廠商： | TOKO Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | LOW DROPOUT VOLTAGE REGULATOR |
| 中文描述： | 低壓差穩(wěn)壓器 |
| 文件頁數： | 10/15頁 |
| 文件大?。?/td> | 114K |
| 代理商： | TK71590AS |
Page 10
March 2001 TOKO, Inc.
TK715xxAS
APPLICATION INFORMATION
INPUT-OUTPUT CAPACITORS
Linear regulators require input and output capacitors in order to maintain regulator loop stability. The output capacitor
should be selected within the Equivalent Series Resistance (ESR) range as shown in the graphs below for stable
operation. The output capacitor C
L
can be reduced as the output voltage is increased. However, the output noise will
increase as C
L
is reduced, so the largest value of C
L
possilbe is recommended (C
L
= 4.7 F or more).
Note: It is very important to check the selected manufacturers electrical characteristics (capacitance and ESR) over
temperature.
Range which can be used:
Range which can be used: V
OUT
+ 2.2
Capacitor used for evaluation: V
OUT
F + 2.2
1.9V I
OUT
= 1 mA ~ Max, TANTALUM CAP. 0.1 F (CERAMIC CAP 0.22 F
1.5V I
OUT
= 1 mA ~ Max, TANTALUM CAP. 0.22 F (CERAMIC CAP 0.22
V
OUT
V
OUT
V
OUT
2.8V I
OUT
= 1 mA ~ Max, MULTI LAYER CERAMIC CAP. 0.68 F
2.0V I
OUT
= 1 mA ~ Max, MULTI LAYER CERAMIC CAP. 1.0 F
1.5V I
OUT
= 1 mA ~ Max, MULTI LAYER CERAMIC CAP. 4.7 F
ESR
≥
0.01
0.68
μ
F
≤
CL
≤
4.7
μ
F or More
ESR
≥
1.0
0.1
μ
F
≤
CL
≤
0.22
μ
F or More
MULTI LAYER CERAMIC CAP
IOUT (mA)
5.0
1.5
1.6
2.0
2.2
2.4
2.6
2.8
3.0
3.2
3.6
3.8
0 20 40 60 80 100
CL = 4.7
μ
F MLCC or More
CL = 0.68
μ
F MLCC
CIN = 0.1
μ
F
Stable area is
above the line
UNSTABLE AREA UNDER
AND TO THE LEFT
3.3
μ
F
2.2
μ
F
1.0
μ
F
TANTALUM CAP
IOUT (mA)
5.0
1.6
1.5
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
3.8
0 20 40 60 80 100
V
Stable area is
above the line
UNSTABLE AREA UNDER
AND TO THE LEFT
CL = 0.22
μ
F (TANTALUM) or More
CL = 0.1
μ
F TANTALUM
0.1
μ
F
CIN = 0.1
μ
F
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相關代理商/技術參數 |
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| TK71590ASCL | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT VOLTAGE REGULATOR |
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| TK71590S | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT VOLTAGE REGULATOR |
| TK71590SCL | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT VOLTAGE REGULATOR |
| TK71590SCL/90 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT VOLTAGE REGULATOR |
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