参数资料
| 型号： | LT3085MPMS8E#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 11/28页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .5A 8-MSOP |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 可调 |
| 输入电压： | 1.2 V ~ 36 V |
| 电压 - 压降（标准）： | 1.35V @ 500mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA |
| 电流 - 限制（最小）： | 500mA |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 8-MSOP-EP |
| 包装： | 带卷 (TR) |
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LT3085
APPLICATIONS INFORMATION
in a small package, but they tend to have strong voltage
and temperature coef?cients as shown in Figures 2
and 3. 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 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. 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 signi?cant enough
to drop capacitor values below appropriate levels. Capacitor
piezoelectric response. A piezoelectric device generates
voltage across its terminals due to mechanical stress,
ceramic capacitor the stress can be induced by vibrations
in the system or thermal transients.
Paralleling Devices
LT3085’s may be paralleled with other LT308X devices to
obtain higher output current. The SET pins are tied together
and the IN pins are tied together. This is the same whether
it’s in three terminal mode or has separate input supplies.
The outputs are connected in common using a small piece
of PC trace as a ballast resistor to equalize the currents.
PC trace resistance in milliohms/inch is shown in Table
1. Only a tiny area is needed for ballasting.
Table 1. PC Board Trace Resistance
DC bias characteristics tend to improve as component
case size increases, but expected capacitance at operating
voltage should be veri?ed.
WEIGHT (oz)
1
2
10 mil WIDTH
54.3
27.1
20 mil WIDTH
27.1
13.6
Voltage and temperature coef?cients are not the only
Trace resistance is measured in mΩ/in
sources of problems. Some ceramic capacitors have a
40
20
BOTH CAPACITORS ARE 16V,
20
0
1210 CASE SIZE, 10μF
X5R
0
–20
X5R
–20
–40
Y5V
–40
–60
–60
–80
Y5V
–80
–100
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10μF
–50 –25
0
25
50
75
100
125
–100
0
2
4
6
8
10
12
14
16
TEMPERATURE (°C)
3085 F03
DC BIAS VOLTAGE (V)
3085 F02
Figure 3. Ceramic Capacitor Temperature Characteristics
Figure 2. Ceramic Capacitor DC Bias Characteristics
3085fb
11
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3090EDD#PBF | 制造商:Linear Technology 功能描述:IC REG LDO NEG ADJ 0.6A 10DFN 制造商:Linear Technology 功能描述:IC, LINEAR VOLT REG, -36V, DFN-10 制造商:Linear Technology 功能描述:LDO, ADJ, 0V-32V, 600MA, DFN-10, Primary Input Voltage:-36V, Dropout Voltage Vdo 制造商:Linear Technology 功能描述:LDO, ADJ, 0V-32V, 600MA, DFN-10, Input Voltage Min:-36V, Input Voltage Max:-1.5V, Output Voltage Min:-32V, Output Voltage Max:0V, Output Current:600mA, Dropout Voltage Vdo:300mV, No. of Pins:10, Operating Temperature Min:-40C , RoHS Compliant: Yes |
| LT3090EMSE#PBF | 制造商:Linear Technology 功能描述:IC REG LDO NEG ADJ 0.6A 12MSOP 制造商:Linear Technology 功能描述:IC, LINEAR VOLT REG, -36V, MSOP-12 制造商:Linear Technology 功能描述:LDO, ADJ, 0V-32V, 600MA, MSOP-12, Primary Input Voltage:-36V, Dropout Voltage Vd |
| LT3090EMSE#TRPBF | 制造商:Linear Technology 功能描述:IC REG LDO NEG ADJ 0.6A 12MSOP 制造商:Linear Technology 功能描述:LDO, ADJ, 0V-32V, 600MA, MSOP-12, Primary Input Voltage:-36V, Dropout Voltage Vd |
| LT3090HDD#PBF | 制造商:Linear Technology 功能描述:IC REG LDO NEG ADJ 0.6A 10DFN 制造商:Linear Technology 功能描述:IC, LINEAR VOLT REG, -36V, DFN-10 制造商:Linear Technology 功能描述:LDO, ADJ, 0V-32V, 600MA, DFN-10, Input Voltage Min:-36V, Input Voltage Max:-1.5V, Output Voltage Min:-32V, Output Voltage Max:0V, Output Current:600mA, Dropout Voltage Vdo:300mV, No. of Pins:10, Operating Temperature Min:-40C , RoHS Compliant: Yes |
| LT3090HMSE#PBF | 制造商:Linear Technology 功能描述:IC REG LDO NEG ADJ 0.6A 12MSOP 制造商:Linear Technology 功能描述:IC, LINEAR VOLT REG, -36V, MSOP-12 |
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