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| 型号： | MIC2954-08BM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V/ADJ .25A 8SOIC |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 5V，1.24 V ~ 29 V |
| 输入电压： | 2 V ~ 30 V |
| 电压 - 压降（标准）： | 0.375V @ 250mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 250mA |
| 工作温度： | -40°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： | 带卷 (TR) |
| 其它名称： | MIC2954-08BMTR |
MIC2954
250mA Low-Dropout Regulator
General Description
Features
The MIC2954 is a “bulletproof” efficient voltage regulator
with very low dropout voltage (typically 40mV @ light loads
and 375mV @ 250mA), and low quiescent current (120μA
typical). The quiescent current of the MIC2954 increases
only slightly in dropout, thus prolonging battery life. Key
MIC2954 features include protection against reversed
battery, fold-back current limiting, and automotive load
dump protection (60V positive transient).
The MIC2954-07/08BM is an adjustable version that
includes an error flag output that warns of a low output
voltage, which is often due to failing batteries on the input.
This may also be used as a power-on reset. A logic-
compatible shutdown input is provided which enables the
regulator to be switched on and off. This part may be pin-
strapped for 5V output, or programmed from 1.24V to 29V
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High-accuracy 5V, guaranteed 250mA output
Low quiescent current
Low dropout voltage
Extremely tight load and line regulation
Very low temperature coefficient
Current and thermal limiting
Input can withstand –20V reverse battery and+60V
positive transients
Error flag warns of low output voltage
Logic-controlled electronic shutdown
Output programmable from 1.24V to 29V
(MIC2954-07/08)
Available in TO-220, TO-92, and surface-mount SOT-
223 and SOIC-8 packages
with the use of two external resistors.
The MIC2954 is available in two voltage tolerances, ±0.5%
maximum and ±1% maximum. Both are guaranteed for
junction temperatures from –40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Applications
? Battery powered equipment
? Cellular telephones
? Laptop, notebook, and palmtop computers
? PCMCIA V CC and V PP regulation/switching
? Bar code scanners
? Automotive electronics
? SMPS post-regulator/dc-to-dc modules
? Voltage reference
? High-efficiency linear power supplies
___________________________________________________________________________________________________________
Ordering Information
Part Number
Standard
Pb-Free /
RoHS Compliant
Accuracy
Junction
Temp. Range
Package
MIC2954-02BT MIC2954-02WT*
MIC2954-03BT MIC2954-03WT*
MIC2954-02BS MIC2954-02WS*
MIC2954-03BS MIC2954-03WS*
MIC2954-02BZ MIC2954-02YZ
MIC2954-03BZ MIC2954-03YZ
MIC2954-07BM MIC2954-07YM
MIC2954-08BM MIC2954-08YM
0.5%
1.0%
0.5%
1.0%
0.5%
1.0%
0.5%
1.0%
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
TO-220-3
TO-220-3
SOT-223-3
SOT-223-3
TO-92-3**
TO-92-3**
8-Pin SOIC
8-Pin SOIC
* RoHS compliant with ‘high-melting solder’ exemption.
** TO-92 package discontinuance notification issued September 2007. End-of-life-buy offered thru December 31, 2007.
Contact factory for additional information.
Micrel Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
September 2007
M9999-090607
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2954-08YM | 功能描述:低压差稳压器 - LDO Improved LP2954 Low Drop-out Regulator (Lead Free ) RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MIC2954-08YM TR | 功能描述:低压差稳压器 - LDO Improved LP2954 Low Drop-out Regulator (Lead Free ) RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MIC2954-08YM | 制造商:Micrel Inc 功能描述:Linear Voltage Regulator IC |
| MIC2954-08YMTR | 制造商:Micrel 功能描述:LDO Regulator Pos 1.24V to 29V5V 0.25A |
| MIC2954-08YM-TR | 功能描述:Linear Voltage Regulator IC Positive Fixed or Adjustable 1 Output 5V, 1.24 V ~ 29 V 250mA 8-SOIC 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:有效 稳压器拓扑:正，固定式或可调式 电压 - 输出:5V，1.24 V ~ 29 V 电流 - 输出:250mA 电压 - 跌落（典型值）:0.375V @ 250mA 稳压器数:1 电压 - 输入:2 V ~ 30 V 电流 - 限制（最小值）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商器件封装:8-SOIC 标准包装:1 |
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