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參數(shù)資料
| 型號(hào)： | LT3010 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 442060007 |
| 中文描述： | 50mA的，3V至80V的微功率低壓差線性穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 9/16頁(yè) |
| 文件大?。?/td> | 244K |
| 代理商： | LT3010 |
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9
LT3010/LT3010-5
3010f
Extra consideration must be given to the use of ceramic
capacitors. Ceramic capacitors are manufactured with a
variety of dielectrics, each with different behavior across
temperature and applied voltage. The most common di-
electrics used are Z5U, Y5V, X5R and X7R. The Z5U and
Y5V dielectrics are good for providing high capacitances
in a small package, but exhibit strong voltage and tem-
perature coefficients as shown in Figures 3 and 4. When
used with a 5V regulator, a 10
μ
F Y5V capacitor can exhibit
an effective value as low as 1
μ
F to 2
μ
F over the operating
temperature range. The X5R and X7R dielectrics result in
more stable characteristics and are more suitable for use
as the output capacitor. The X7R type has better stability
across temperature, while the X5R is less expensive and
is available in higher values.
Voltage and temperature coefficients are not the only
sources of problems. Some ceramic capacitors have a
piezoelectric response. A piezoelectric device generates
voltage across its terminals due to mechanical stress,
similar to the way a piezoelectric accelerometer or micro-
phone works. For a ceramic capacitor the stress can be
induced by vibrations in the system or thermal transients.
Thermal Considerations
The power handling capability of the device will be limited
by the maximum rated junction temperature (125
°
C). The
power dissipated by the device will be made up of two
components:
1. Output current multiplied by the input/output voltage
differential: I
OUT
(V
IN
– V
OUT
) and,
2. GND pin current multiplied by the input voltage:
I
GND
V
IN
.
The GND pin current can be found by examining the GND
Pin Current curves in the Typical Performance Character-
istics. Power dissipation will be equal to the sum of the two
components listed above.
APPLICATIOU
W
U
U
Figure 3. Ceramic Capacitor DC Bias Characterics
Figure 4. Ceramic Capacitor Temperature Characterics
DC BIAS VOLTAGE (V)
C
3010 F03
20
0
–20
–40
–60
–80
–1000
4
8
10
2
6
12
14
X5R
Y5V
16
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10
μ
F
TEMPERATURE (
°
C)
–50
40
20
0
–20
–40
–60
–80
–100
25
75
3010 F04
–25
0
50
100
125
Y5V
C
X5R
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10
μ
F
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3010_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:50mA, 3V to 80V Low Dropout Micropower Linear Regulator |
| LT30100-1 | 制造商:LITTELFUSE 制造商全稱:Littelfuse 功能描述:Class T Fuse Blocks - 300 and 600 Volt |
| LT301001C | 功能描述:熔絲座 ACS 300V Class T 100A 1 Pole RoHS:否 制造商:Littelfuse 產(chǎn)品: 電流額定值:30 A 電壓額定值:1000 VDC 極數(shù):1 系列: 安裝風(fēng)格:DIN Rail 端接類型: 軸類型: 工作溫度范圍: |
| LT30100-2 | 制造商:LITTELFUSE 制造商全稱:Littelfuse 功能描述:Class T Fuse Blocks - 300 and 600 Volt |
| LT301002C | 功能描述:熔絲座 ACS 300V Class T 100A 2 Pole RoHS:否 制造商:Littelfuse 產(chǎn)品: 電流額定值:30 A 電壓額定值:1000 VDC 極數(shù):1 系列: 安裝風(fēng)格:DIN Rail 端接類型: 軸類型: 工作溫度范圍: |
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