参数资料
| 型号： | LT3022EDHC#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 13/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 1A 16DFN |
| 产品培训模块： | LT3022 - 1A, 0.9V to 10V, Very Low Dropout Linear Regulator |
| 标准包装： | 73 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.2 V ~ 9.5 V |
| 输入电压： | 0.9 V ~ 10 V |
| 电压 - 压降（标准）： | 0.145V @ 1A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1A |
| 电流 - 限制（最小）： | 1.1A |
| 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 |
LT3022/LT3022-1.2
LT3022-1.5/LT3022-1.8
APPLICATIONS INFORMATION
and are more suitable for use as the output capacitor at
fractionally increased cost. X5R and X7R dielectrics both
exhibit excellent voltage coefficient characteristics. X7R
works over a larger temperature range and exhibits better
temperature stability whereas X5R is less expensive and
is available in higher values. Figures 2 and 3 show voltage
coefficient and temperature coefficient comparisons
between Y5V and X5R material.
20
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10μF
0
X5R
–20
–40
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
microphone works. For a ceramic capacitor, the stress can
be induced by vibrations in the system or thermal transients.
The resulting voltages produced can cause appreciable
amounts of noise. A ceramic capacitor produced Figure 4’s
trace in response to light tapping from a pencil. Similar
vibration induced behavior can masquerade as increased
output voltage noise.
–60
–80
Y5V
1mV/DIV
–100
0
2
4
6
8
10
12
14
16
DC BIAS VOLTAGE (V)
3022 F02
Figure 2. Ceramic Capacitor DC Bias Characteristics
40
V OUT = 1.3V
C OUT = 10μF
I LOAD = 0
1ms/DIV
3022 F04
20
Figure 4. Noise Resulting from Tapping on a Ceramic Capacitor
0
X5R
No-Load/Light-Load Recovery
Y5V
–100
–20
–40
–60
–80
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10μF
–50 –25 0 25 50 75 100 125
TEMPERATURE (°C) 3022 F03
Figure 3. Ceramic Capacitor Temperature Characteristics
A possible transient load step that occurs is where the
output current changes from its maximum level to zero
current or a very small load current. The output voltage
responds by overshooting until the regulator lowers the
amount of current it delivers to the new level. The regulator
loop response time and the amount of output capacitance
control the amount of overshoot. Once the regulator has
decreased its output current, the current provided by
the resistor divider (which sets V OUT ) is the only current
remaining to discharge the output capacitor from the level
to which it overshot. The amount of time it takes for the
output voltage to recover easily extends to milliseconds
with minimum divider current and many microfarads of
output capacitance.
3022fb
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3022EDHC-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:1A, 0.9V to 10V, Very Low Dropout Linear Regulator |
| LT3022EDHC-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1A, 0.9V to 10V, Very Low Dropout Linear Regulator |
| LT3022EMSE | 制造商:LINER 制造商全称:Linear Technology 功能描述:1A, 0.9V to 10V, Very Low Dropout Linear Regulator |
| LT3022EMSE#PBF | 功能描述:IC REG LDO ADJ 1A 16MSOP 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 |
| LT3022EMSE#TRPBF | 功能描述:IC REG LDO ADJ 1A 16MSOP 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:3V 输入电压:2.3 V ~ 5.5 V 电压 - 压降（标准）:0.035V @ 150mA 稳压器数量:2 电流 - 输出:150mA 电流 - 限制（最小）:300mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-UFDFN 裸露焊盘，6-TMLF? 供应商设备封装:6-TMLF?（1.6x1.6） 包装:Digi-Reel® 产品目录页面:1104 (CN2011-ZH PDF) 其它名称:576-3018-6 |
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