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參數資料
| 型號： | FAN1582P25X |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 3A Adjustable/Fixed Ultra Low Dropout Linear Regulator |
| 中文描述： | 2.5 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PSSO5 |
| 封裝： | PLASTIC, SPAK-5 |
| 文件頁數： | 5/12頁 |
| 文件大小： | 393K |
| 代理商： | FAN1582P25X |
PRODUCT SPECIFICATION
FAN1582
REV. 1.1.2 2/26/03
5
Typical Perfomance Characteristics (continued)
6
5
4
S
P
R
3
2
-75 -50 -25
25
50
75 100
125 150 175
20
25
45
65
85
105
125
15
10
5
0
0
JUNCTION TEMPERATURE (
°
C)
CASE TEMPERATURE
FREQUENCY (HZ)
(V
IN
—
V
OUT
)
≤
3V
0.5V
≤
V
RIPPLE
≤
2V
I
OUT
= 3A
90
90
70
60
50
40
30
20
10
0
10
100
1K
10K
100K
Short-Circuit Current vs.Temeperature
Ripple Rejection vs. Frequency
Maximum Power Dissipation
General
The FAN1582, FAN1582-1.5, and FAN1582-2.5 are three-
terminal regulators optimized for GTL+ V
TT
termination and
logic applications. These devices are short-circuit protected,
and offer thermal shutdown to turn off the regulator when the
junction temperature exceeds about 150°C. The FAN1582
series provides low dropout voltage and fast transient
response. Frequency compensation uses capacitors with low
ESR while still maintaining stability. This is critical in
addressing the needs of low voltage high speed microproces-
sor buses like GTL+.
V
IN
and V
CNTL
Functions
The FAN1582 utilizes a dual supply approach to maximize
efficiency. The collector of the power device is brought out
to the V
IN
pin to minimize internal power dissipation under
high current loads. V
CNTL
provides power for the control
circuitry and the drive for the output NPN transistor. V
CNTL
should be at least 1.2 V higher than the output voltage.
Special care was taken to ensure there are no supply-
sequencing problems. The output voltage will not turn on
until both supplies are operating. If the control voltage
comes up first, the output current will be typically limited to
about 3.0 mA until the power input voltage comes up. If the
power input voltage comes up first the output will not turn on
at all until the control voltage comes up. The output can
never come up unregulated.
The FAN1582 can also be used as a single supply device
with the control and power inputs tied together. In this mode,
the dropout is determined by the minimum control voltage.
Stability
The FAN1582 series requires an output capacitor as a part of
the frequency compensation. It is recommended to use a 22μF
solid tantalum or a 100μF aluminum electrolytic on the output
to ensure stability. The frequency compensation of these
devices optimizes the frequency response with low ESR capaci-
tors. In general, it is suggested to use capacitors with an ESR
of <0.3
. It is also recommended to use bypass capacitors
such as a 22μF tantalum or a 100μF aluminum on the adjust
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FAN1582PX | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:3A Adjustable/Fixed Ultra Low Dropout Linear Regulator |
| FAN1582T | 功能描述:低壓差穩壓器 - LDO DISC BY MFG 2/02 RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| FAN1582T-1.5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator |
| FAN1582T15 | 功能描述:低壓差穩壓器 - LDO DISC BY MFG 2/02 RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| FAN1582T-2.5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator |
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