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參數(shù)資料
| 型號(hào)： | MAX667 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | +5V/Programmable Low-Dropout Voltage Regulator(5V/可調(diào),低輸出步降線性穩(wěn)壓器) |
| 中文描述： | +5V可調(diào)、低壓差穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 6/8頁(yè) |
| 文件大?。?/td> | 96K |
| 代理商： | MAX667 |
M
put-capacitor ESR and this series resistance should, at
minimum, meet the requirements shown in Figure 4.
An upper limit to the output-capacitor ESR is important
only if step changes to the load are anticipated. Higher
ESR results in higher-amplitude output-voltage tran-
sients when the output current is varied. A Sanyo
OS-CON capacitor, whose ESR is nearly flat over tem-
perature (and is low to begin with), in series with the
appropriate resistor ensures the best load-transient
performance. A less expensive alternative is to use a
tantalum capacitor in series with the resistor.
In most cases, inexpensive aluminum-electrolytic
capacitors work well with the MAX667 over their entire
temperature range, having sufficient ESR to ensure sta-
bility without the need for a series resistor. The ESR of
aluminium electrolytics rises, often dramatically, as
temperature decreases. For surface-mount applica-
tions, certain tantalum capacitors have sufficient ESR;
an example is the TAJ B106K016 chip capacitor made
by AVX (phone: (803) 448-9411, fax: (803) 448-1943).
Battery Drain
The MAX667 uses a PNP output transistor. When the
input voltage falls below the desired output voltage, the
+5V /Programmable Low-Dropout
Voltage Regulator
6
_______________________________________________________________________________________
MAX667
GND
4
SHDN
5
SET
6
OUT
R1
47k
DD
+5V OUT
IN
8
2
1
C1
10
μ
F
C2
0.1
μ
F
Figure 6. Quiescent-Current Reduction Below Dropout
MAX667
DD
1
GND
4
OUT
R3
1M
R1
332k
R2
1M
SET
+5V OUT
IN
8
2
6
C1
10
μ
F
SHDN
5
Figure 7. Connection for Minimum Quiescent Current Near
Dropout
10
0
0
1
2
3
4
5
6
2
M
INPUT VOLTAGE (V)
Q
4
6
8
VSHDN = 0V
Figure 8. Quiescent Current Below Dropout for Circuit of
Figure 2
MAX667
SHDN
5
SET
6
GND
4
OUT
R
+5V OUT
IN
8
2
10
μ
F
Figure 5. Alternative Stability Scheme Using Resistor R
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| MAX6670AUB050 | 制造商:Maxim Integrated Products 功能描述:REMOTE TEMPERATURE SWITCHES WITH INTEGRATED F - Bulk |
| MAX6670AUB055 | 制造商:Maxim Integrated Products 功能描述:REMOTE TEMPERATURE SWITCHES WITH INTEGRATED F - Bulk |
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