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參數(shù)資料
| 型號(hào)： | LT3060EDC#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類(lèi)： | 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器 |
| 英文描述： | FIXED POSITIVE LDO REGULATOR, PDSO8 |
| 封裝： | 2 X 2 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, DFN-8 |
| 文件頁(yè)數(shù)： | 5/20頁(yè) |
| 文件大小： | 277K |
| 代理商： | LT3060EDC#PBF |
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LT3060
13
3060f
voltages set for greater than 24V, use a minimum output
capacitor of 4.7μF. The LT3060 is a micropower device
and output load transient response is a function of output
capacitance. Larger values of output capacitance decrease
the peak deviations and provide improved transient
responseforlargerloadcurrentchanges.Bypasscapacitors,
used to decouple individual components powered by the
LT3060, increase the effective output capacitor value. For
applications with large load current transients, a low ESR
ceramic capacitor in parallel with a bulk tantalum capacitor
often provides an optimally damped response.
Give extra consideration to the use of ceramic capacitors.
Manufacturers make ceramic capacitors with a variety of
dielectrics, each with different behavior across tempera-
ture and applied voltage. The most common dielectrics
are specied with EIA temperature characteristic codes
of Z5U, Y5V, X5R and X7R. The Z5U and Y5V dielectrics
provide high C-V products in a small package at low cost,
but exhibit strong voltage and temperature coefcients, as
shown in Figures 4 and 5. When used with a 5V regulator,
a 16V 10μF Y5V capacitor can exhibit an effective value
as low as 1μF to 2μF for the DC bias voltage applied, and
over the operating temperature range. The X5R and X7R
dielectrics yield much more stable characteristics and are
more suitable for use as the output capacitor.
The X7R type works over a wider temperature range and
has better temperature stability, while the X5R is less
expensive and is available in higher values. Care still must
be exercised when using X5R and X7R capacitors; the X5R
and X7R codes only specify operating temperature range
and maximum capacitance change over temperature.
Capacitance change due to DC bias with X5R and X7R
capacitors is better than Y5V and Z5U capacitors, but can
still be signicant enough to drop capacitor values below
appropriate levels. Capacitor DC bias characteristics tend
to improve as component case size increases, but expected
capacitance at operating voltage should be veried.
Voltageandtemperaturecoefcientsarenottheonlysources
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 microphone works. For a
ceramic capacitor, the stress is induced by vibrations in
the system or thermal transients. The resulting voltages
produced cause appreciable amounts of noise. A ceramic
capacitor produced the trace in Figure 6 in response to light
tapping from a pencil. Similar vibration induced behavior
can masquerade as increased output voltage noise.
Figure 4. Ceramic Capacitor DC Bias Characteristics
APPLICATIONS INFORMATION
DC BIAS VOLTAGE (V)
CHANGE
IN
VALUE
(%)
3060 F04
20
0
–20
–40
–60
–80
–100
0
4
8
10
26
12
14
X5R
Y5V
16
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10μF
TEMPERATURE (°C)
–50
40
20
0
–20
–40
–60
–80
–100
25
75
3060 F05
–25
0
50
100
125
Y5V
CHANGE
IN
VALUE
(%)
X5R
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10μF
Figure 5. Ceramic Capacitor Temperature Characteristics
4ms/DIV
3060 F06
VOUT
500μV/DIV
VOUT = 0.6V
COUT = 10μF
CREF/BYP = 10nF
ILOAD = 100mA
Figure 6. Noise Resulting from Tapping on a Ceramic Capacitor
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3060EDCTR | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:45V VIN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator |
| LT3060EDCTRPBF | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:45V VIN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator |
| LT3060ETS8 | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:45V VIN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator |
| LT3060ETS8#PBF | 制造商:Linear Technology 功能描述:IC ADJ LDO REG 0.6V TO 44.5V 0.1A TSOT-8; Primary Input Voltage:45V; Dropout Voltage Vdo:300mV; No. of Pins:8; Output Current:100mA; Operating Temperature Min:-40C; Operating Temperature Max:125C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
| LT3060ETS8#TRMPBF | 功能描述:IC REG LDO ADJ .1A 8TSOT RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品培訓(xùn)模塊:MIC5365/66 Ultra-small LDO Regulators 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:3V 輸入電壓:最高 5.5V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.155V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?200mA 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:表面貼裝 封裝/外殼:4-UDFN 裸露焊盤(pán)，4-TMLF? 供應(yīng)商設(shè)備封裝:4-TMLF?（1x1） 包裝:Digi-Reel® 其它名稱(chēng):576-3192-6 |
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