参数资料
| 型号： | LT3028EDHC#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .5A/.1A 16-DFN |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 73 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.22 V ~ 20 V |
| 输入电压： | 1.8 V ~ 20 V |
| 电压 - 压降（标准）： | 0.32V @ 500mA，0.3V @ 100mA |
| 稳压器数量： | 2 |
| 电流 - 输出： | 500mA，100mA |
| 电流 - 限制（最小）： | 520mA，110mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFDFN 裸露焊盘 |
| 供应商设备封装： | 16-DFN（5x3） |
| 包装： | 管件 |
| 产品目录页面： | 1330 (CN2011-ZH PDF) |
LT3028
APPLICATIO S I FOR ATIO
used to bypass the reference (for low noise operation),
larger values of output capacitors are needed. For 100pF
of bypass capacitance on Output 2, 2.2 μ F of output
capacitor is recommended. With a 330pF bypass capaci-
tor or larger on this output, a 3.3 μ F output capacitor is
recommended. For Output 1, 4.7 μ F of output capacitor is
recommended for 100pF of bypass capacitance. With
1000pF or larger bypass capacitor on this output, a 6.8 μ F
output capacitor is recommended. The shaded region of
Figures 2 and 3 define the regions over which the LT3028
regulator is stable. The minimum ESR needed is defined
by the amount of bypass capacitance used, while the
maximum ESR is 3 ? .
4.0
3.5
3.0
STABLE REGION
2.5
2.0
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
dielectrics 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 4 and 5. 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.
4.0
3.5
3.0
STABLE REGION
2.5
2.0
1.5
1.0
0.5
0
C BYP = 0
C BYP = 100pF
C BYP = 330pF
C BYP > 3300pF
1.5
1.0
0.5
0
C BYP = 0
C BYP = 100pF
C BYP = 330pF
C BYP ≥ 1000pF
1
2
3
4 5 6 7 8 9 10
1
2
3
4 5 6 7 8 9 10
OUTPUT CAPACITANCE ( μ F)
3028 F02
Figure 2. Output 2 Stability
OUTPUT CAPACITANCE ( μ F)
3028 F03
Figure 3. Output 1 Stability
20
0
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10 μ F
40
20
X5R
0
X5R
–20
–20
–40
–40
Y5V
–60
Y5V
–60
–80
–80
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10 μ F
–100
0
2
4
6
8
10
12
14
16
–100
–50 –25 0 25
50
75
100
125
DC BIAS VOLTAGE (V)
3028 F04
Figure 4. Ceramic Capacitor DC Bias Characteristics
TEMPERATURE ( ° C)
3028 F05
Figure 5. Ceramic Capacitor Temperature Characteristics
3028f
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3028EFE | 制造商:Linear Technology 功能描述:LDO Regulator Pos 1.22V to 20V 0.1A/0.5A 16-Pin TSSOP EP |
| LT3028EFE#PBF | 功能描述:IC REG LDO ADJ .5A/.1A 16-TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:8V 输入电压:10.5 V ~ 23 V 电压 - 压降（标准）:1.7V @ 40mA 稳压器数量:1 电流 - 输出:100mA（最小值） 电流 - 限制（最小）:- 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:剪切带 (CT) 产品目录页面:1075 (CN2011-ZH PDF) 其它名称:296-24390-1 |
| LT3028EFE#TRPBF | 功能描述:IC REG LDO ADJ .5A/.1A 16-TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:800 系列:- 稳压器拓扑结构:正，固定式 输出电压:2.5V 输入电压:最高 16V 电压 - 压降（标准）:0.7V @ 4A 稳压器数量:1 电流 - 输出:4A 电流 - 限制（最小）:4.2A 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-263-6，D²Pak（5 引线+接片），TO-263BA 供应商设备封装:TO-263-5 包装:带卷 (TR) 其它名称:AP1184K525L-13AP1184K525LDITR |
| LT3028EFEPBF | 制造商:Linear Technology 功能描述:LT3028 dual adj 500/100mA LDO regulator |
| LT3028IDHC | 制造商:Linear Technology 功能描述:LDO Regulator Pos 1.22V to 20V1.22V to 20V 0.1A/0.5A 16-Pin DFN EP |
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