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MIC5156-5.0BM PDF预览

MIC5156-5.0BM

更新时间： 2024-11-22 22:19:39
品牌 Logo 应用领域
麦瑞 - MICREL 稳压器控制器
页数 文件大小 规格书
11页 96K
描述
Super LDO⑩ Regulator Controller

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中文翻译

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MIC5156-5.0BM 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：SOP,Reach Compliance Code：not_compliant
风险等级：5.32模拟集成电路 - 其他类型：ANALOG CIRCUIT
JESD-30 代码：R-PDSO-G8JESD-609代码：e0
长度：4.93 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：240认证状态：Not Qualified
座面最大高度：1.73 mm最大供电电压 (Vsup)：36 V
最小供电电压 (Vsup)：3 V标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3.94 mm
Base Number Matches：1

MIC5156-5.0BM 数据手册

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MIC5156/5157/5158  
Super LDO™ Regulator Controller  
either 3.3V, 5.0V, or 12V. The MIC5158 can be configured as  
a fixed 5V controller or programmed to any voltage from 1.3V  
to 36V using two external resistors.  
General Description  
The MIC5156, MIC5157, and MIC5158 Super Low-Dropout  
(LDO) Regulator Controllers are single IC solutions for high-  
current low-dropout linear voltage regulation. Super LDO™  
Regulators have the advantages of an external N-channel  
power MOSFET as the linear pass element.  
The MIC5156 is available in an 8-pin DIP or SOP. The  
MIC5157 and MIC5158 are available in a 14-pin DIP or SOP  
which operate from –40°C to +85°C.  
The MIC5156/7/8 family features a dropout voltage as low as  
the R  
of the external power MOSFET multiplied by the  
DS(ON)  
Features  
• 4.5mA typical operating current  
• <1µA typical standby current  
output current. The output current can be as high as the  
largest MOSFETs can provide.  
The MIC5156/7/8 family operates from 3V to 36V. The  
MIC5156requiresanexternalgatedrivesupplytoprovidethe  
higher voltage needed to drive the gate of the external  
MOSFET. The MIC5157 and MIC5158 each have an internal  
charge pump tripler to produce the gate drive voltage. The  
tripler is capable of providing enough voltage to drive a logic-  
level MOSFET to 3.3V output from a 3.5V supply and is  
clamped to 17.5V above the supply voltage. The tripler  
requires three external capacitors.  
• Low external parts count  
• Optional current limit (35mV typical threshold)  
• 1% initial output voltage tolerance in most configurations  
• 2% output voltage tolerance over temperature  
• Fixed output voltages of 3.3V, 5.0V (MIC5156)  
• Fixed output voltages of 3.3V, 5.0V, 12V (MIC5157)  
• Programmable (1.3 to 36V) with 2 resistors (MIC5156/8)  
• Internal charge pump voltage tripler (MIC5157/8)  
• Enable pin to activate or shutdown the regulator  
• Internal gate-to-source protective clamp  
• All versions available in DIP and SOP  
The regulator output is constant-current limited when the  
controller detects 35mV across an optional external sense  
resistor. An active-low open-collector flag indicates a low  
voltage of 8% or more below nominal output. A shutdown  
(low) signal to the TTL-compatible enable control reduces  
controller supply current to less than 1µA while forcing the  
output voltage to ground.  
Applications  
• Ultrahigh current ultralow dropout voltage regulator  
• Constant high-current source  
• Low parts count 5.0V to 3.3V computer supply  
• Low noise/low-dropout SMPS post regulator  
• High-current, current-limited switch  
The MIC5156-3.3 and MIC5156-5.0 controllers have inter-  
nally fixed output voltages. The MIC5156 [adjustable] output  
is configured using two external resistors. The MIC5157 is a  
fixed output controller which is externally configured to select  
Typical Applications  
+12V  
1.0µF  
0.1µF  
0.1µF  
Enable  
Shutdown  
7
6
5
4
3
2
1
4
3
2
1
MIC5157  
MIC5156-3.3  
8
9
10 11 12 13 14  
5
6
7
8
0.1µF  
Enable  
3mΩ  
Shutdown  
3mΩ  
RS  
VOUT  
3.3V, 10A  
VIN  
5V  
VOUT  
3.3V, 10A  
VIN  
RS  
(3.61V min.)  
CL*  
47µF  
CL*  
47µF  
47µF  
47µF  
RS = 0.035V / ILIMIT  
IRLZ44 (Logic Level MOSFET)  
RS = 0.035V / ILIMIT  
*Improves transient  
response to load changes  
*Improves transient  
response to load changes  
SMP60N03-10L  
10A 5V to 3.3V Desktop Computer Regulator  
10A Low-Dropout Voltage Regulator  
Super LDO is a trademark of Micrel, Inc.  
3-112  
March 1999  
1234567...11

中文翻译

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