- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄372217 > SPX1580T5-2.5 122 x 32 pixel format, Compact LCD size PDF資料下載
參數(shù)資料
| 型號(hào)： | SPX1580T5-2.5 |
| 英文描述： | 122 x 32 pixel format, Compact LCD size |
| 中文描述： | 第7A超低壓降穩(wěn)壓器快速響應(yīng)，可調(diào) |
| 文件頁(yè)數(shù)： | 4/8頁(yè) |
| 文件大?。?/td> | 168K |
| 代理商： | SPX1580T5-2.5 |
4
Date: 5/14/04
SPX1580 7A Ultra Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
Output Capacitor
An output capacitor for SPX1580 is for circuit
compensation for the device to prevent
oscilliation. The minimum size of the output
capacitor is either a 330
μ
F aluminum electro-
lytic capacitor or 33uF tantalum. Larger capaci-
tor values improve the regulator transient re-
sponse performance and increase surge load
capability. The output capacitor should have an
ESR not more than 0.3
.
Adjustable Regulator Design
1.25V reference voltage is being developed be-
tween the SENSE pin and the ADJ pin of the
SPX1580. Adding two external resistors (see fig
1.) will allow setting the output voltage from
1.25V to 6V. R
1
is chosen so that this current is
specified minimum load current of 10mA. R
2
is
given by the formula: V
OUT
= V
REF
(1+ R
2
/R
1
)
+ I
ADJ
(R
2
). The current flowing from the ADJ
pin is typicaly 50uA. This ADJ pin contributes
to the final V
OUT
but is usually neglected.
Connecting the sense pin to the top of the resis-
tor divider will improve load regualtion.
Lowering Noise
Using the SENSE pin to Kelvin the load will
increase accuracy of the output voltage during
load regulation. For the fixed voltage device,
adding a bypass capacitor from ADJ pin to
ground improves transient response. A 330pF
ceramic capacitor is recommended.
C3
68
μ
F
2.5V
V
OUT
R1
124
R2
124
V
OUT
SENSE
C2
10
μ
F
V
CTRL
C1
33
μ
F
3.3V
V
IN
5V
V
CTRL
SPX1580
5
4
2
3
1
(1) V
CTRL
needed when V
IN
< 5V.
(2) V
OUT
= V
(1+R
/R
)+I
R
.
(3) V
REF
is measured across adjust to sense.
ADJ
V
IN
C4
0.033
μ
F
Figure 1. Adjustable Regulator.
APPLICATION INFORMATION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SPX1580T5-2.8 | 122 x 32 pixel format, Compact LCD size |
| SPX1580U5-2.5 | 320 x 240 pixel format, CFL backlight available with power harness |
| SPX1581T-2.5 | 5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1581T-3.3 | 5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1581T5 | 5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SPX1580T5-3.3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:7A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1580T5-3.3/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:7A Ultra Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1580T5-L | 制造商:Exar Corporation 功能描述:IC V REG LDO 7A 2% ADJ SMD 1580 |
| SPX1580T5-L-2-5 | 制造商:Exar Corporation 功能描述:V REG LDO 7A 2% +2.5V SMD 1580 |
| SPX1580T5-L-3-3 | 制造商:Exar Corporation 功能描述:V REG LDO 7A 2% +3.3V SMD 1580 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。