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参数资料
| 型号： | MIC5206-4.0BMM |
| 厂商： | Micrel Inc |
| 文件页数： | 8/11页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 4V .15A 8-MSOP |
| 标准包装： | 100 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 4V |
| 输入电压： | 最高 16V |
| 电压 - 压降（标准）： | 0.165V @ 150mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 150mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
Micrel, Inc.
Application Information
Enable/Shutdown
Forcing EN (enable/shutdown) high (> 2V) enables the
regulator. EN is compatible with CMOS logic gates.
If the enable/shutdown feature is not required, connect
EN (enable) to IN (supply input). Refer to the text with
Figures 1aand 2.
Input Capacitor
A 1μF capacitor should be placed from IN to GND if
there is more than 10 inches of wire between the input
and the ac filter capacitor or if a battery is used as the
input.
Reference Bypass Capacitor
BYP (reference bypass) is connected to the internal
voltage reference. A 470pF capacitor (C BYP ) connected
from BYP to GND quiets this reference, providing a
significant reduction in output noise. See Figure 2. C BYP
reduces the regulator phase margin; when using C BYP ,
output capacitors of 2.2μF or greater are generally
required to maintain stability.
The start-up speed of the MIC5206 is inversely
proportional to the size of the reference bypass
capacitor. Applications requiring a slow ramp-up of
output voltage should consider larger values of C BYP .
Likewise, if rapid turn-on is necessary, consider omitting
C BYP .
If output noise is not a major concern, omit C BYP and
leave BYP open.
Output Capacitor
An output capacitor is required between OUT and GND
to prevent oscillation. The minimum size of the output
capacitor is dependent upon whether a reference bypass
capacitor is used. 1.0μF minimum is recommended
when C BYP is not used (see Figure 2). 2.2μF minimum is
recommended when C BYP is 470pF (see Figure 2).
Larger values improve the regulator’s transient
response. The output capacitor value may be increased
without limit.
The output capacitor should have an ESR (effective
series resistance) of about 5 ? or less and a resonant
frequency above 1MHz. Most tantalum or aluminum
electrolytic capacitors are adequate; film types will work,
but are more expensive. Since many aluminum
electrolytics have electrolytes that freeze at about
–30°C, solid tantalums are recommended for operation
below –25°C.
At lower values of output current, less output
capacitance is required for output stability. The capacitor
can be reduced to 0.47μF for current below 10mA or
0.33μF for currents below 1mA.
MIC5206
No-Load Stability
The MIC5205 will remain stable and in regulation with no
load (other than the internal voltage divider) unlike many
other voltage regulators. This is especially important in
CMOS RAM keep-alive applications.
Error Flag Output
The error flag is an open-collector output and is active
(low) when an undervoltage of approximately 5% below
the nominal output voltage is detected. A pull-up resistor
from IN to FLAG is shown in all schematics.
If an error indication is not required, FLAG may be left
open and the pull-up resistor may be omitted.
Enable Pin Ramp and the Error Flag
To prevent indeterminate behavior on the error flag
during power down of the device, ensure that the fall
time of the enable pin signal, from logic high to logic low,
is faster than 100μs.
Fixed Regulator Applications
Figure 1a. Low-Noise Fixed Voltage Application
EN (pin 3) is shown connected to IN (pin 1) for an
application where enable/shutdown is not required. The
error flag is shown with a 100k ? pull-up resistor.
Figure 1b. Low-Noise Fixed Voltage Application
Figure 1b is an example of a basic configuration where
the lowest-noise operation is not required. C OUT = 1μF
minimum. The error flag is shown with a 47k ? pull-up
resistor.
May 2006
8
M9999-051506
(408) 955-1690
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC5206-5.0BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:RF Micro Devices Inc 功能描述: |
| MIC5206-5.0BM5 TR | 功能描述:IC REG LDO 5V .15A SOT23-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:500 系列:- 稳压器拓扑结构:正，固定式 输出电压:12V 输入电压:14.5 V ~ 35 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:500mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:TO-205AD，TO-39-3 金属罐 供应商设备封装:TO-39 包装:散装 其它名称:*LM78M12CH*LM78M12CH/NOPBLM78M12CH |
| MIC5206-5.0BMM | 功能描述:IC REG LDO 5V .15A 8-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:500 系列:- 稳压器拓扑结构:正，固定式 输出电压:12V 输入电压:14.5 V ~ 35 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:500mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:TO-205AD，TO-39-3 金属罐 供应商设备封装:TO-39 包装:散装 其它名称:*LM78M12CH*LM78M12CH/NOPBLM78M12CH |
| MIC5206-5.0BMM TR | 功能描述:IC REG LDO 5V .15A 8-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:500 系列:- 稳压器拓扑结构:正，固定式 输出电压:12V 输入电压:14.5 V ~ 35 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:500mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:TO-205AD，TO-39-3 金属罐 供应商设备封装:TO-39 包装:散装 其它名称:*LM78M12CH*LM78M12CH/NOPBLM78M12CH |
| MIC52065.0BMTS | 制造商:Micrel Inc 功能描述: |
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