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參數資料
| 型號： | SG237 |
| 廠商： | Microsemi Corporation |
| 英文描述： | 1.5 AMP NEGATIVE ADJUSTABLE REGULATOR |
| 中文描述： | 1.5放大器的負調節(jié)調壓器 |
| 文件頁數： | 4/6頁 |
| 文件大小： | 110K |
| 代理商： | SG237 |
SG137A/SG137 SERIES
2/92 Rev 1.1 2/94
Copyright
1994
L
IN
F
IN
ITY
Microelectronics Inc.
11861 Western Avenue
∞
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
4
FIGURE 6.
ADJUSTMENT CURRENT VS. TEMPERATURE
FIGURE 5.
INPUT/OUTPUT DIFFERENTIAL
VS. OUTPUT CURRENT
FIGURE 3.
CURRENT VS. INPUT/OUTPUT DIFFERENTIAL
FIGURE 2.
REFERENCE VOLTAGE VS. TEMPERATURE
FIGURE 1.
INPUT/OUTPUT DIFFERENTIAL
VS. OUTPUT CURRENT
FIGURE 4. *
OUTPUT VOLTAGE DEVIATION
VS. OUTPUT CURRENT
CHARACTERISTIC CURVES
* The SG137A has load regulation compensation which
makes the typical unit read close to zero. This band
represents the typical production spread.
APPLICATION INFORMATION
OUTPUT VOLTAGE
The output voltage is determined by two external resistors, R
1
&
R
2
(see Figure 7).
The exact formula for the output voltage is:
( )
V
OUT
= V
REF
+ I
ADJ
(R
2
)
Where: V
=Reference Voltage, I
= Adjustment Pin Current.
In most applications, the second term is small enough to be
ignored, typically about 0.5% of V
. In more critical applica-
tions, the exact formula should be used, with I
ADJ
equal to 65
μ
A.
Solving for R
2
yields:
Smaller values of R
and R
will reduce the influence of I
on the
output voltage, but the no-load current drain on the regulator will
be increased. Typical values for R
are between 100
and 300
,
giving 12.5 mA and 4.2mA no-load current respectively. There
is an additional consideration in selecting R
the minimum load
current specification of the regulator. The operating current of
R
2
=
V
OUT
- V
REF
V
REF
R
1
+ I
ADJ
FIGURE 6
2
1
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| SG3503 | PRECISION 2.5-VOLT REFERENCE |
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相關代理商/技術參數 |
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|---|---|
| SG237A | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:1.5 AMP NEGATIVE ADJUSTABLE REGULATOR |
| SG237AK | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:1.5 AMP NEGATIVE ADJUSTABLE REGULATOR |
| SG237AR | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:1.5 AMP NEGATIVE ADJUSTABLE REGULATOR |
| SG237AT | 制造商:Microsemi Corporation 功能描述:SG237AT - Bulk |
| SG237K | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:1.5 AMP NEGATIVE ADJUSTABLE REGULATOR |
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