产品概述
描述
The LD2981 is a 100 mA fixed-output voltage regulator. The low-drop voltage and the ultra low quiescent current make them suitable for low noise, low power applications and in battery powered systems.
The quiescent current in sleep mode is less than 1 μA when INHIBIT pin is pulled low. Shutdown logic control function is available on pin n° 3 (TTL compatible). This means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. The LD2981 is designed to work with low ESR ceramic capacitor. Typical applications are in cellular phone, palmtop/laptop computer, personal digital assistant (PDA), personal stereo, camcorder and camera.
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All features
- Ultra low dropout voltage (0.17 V typ. at 100 mA load, 7 mV typ. at 1 mA load)
- Very low quiescent current (80 μA typ. at no load in on mode; max 1 μA in off mode)
- Guaranteed output current up to 100 mA
- Logic-controlled electronic shutdown
- Output voltage of 2.5; 3.0; 3.3; 5.0 V
- Internal current and thermal limit
- ± 0.75% tolerance output voltage available (A version)
- Output low noise voltage 160 μVRMS
- Temperature range: -40 to 125 °C
- Small package SOT23-5L and SOT-89
- Fast dynamic response to line and load changes
特别推荐
EDA Symbols, Footprints and 3D Models
STMicroelectronics - LD2981
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| LD2981ABM30TR | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD2981ABM33TR | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD2981ABM50TR | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD2981ABU33TR | Active 产品已量产 | SOT-89 | Industrial | Ecopack2 | - | - | |
| LD2981ABU50TR | Active 产品已量产 | SOT-89 | Industrial | Ecopack2 | - | - | |
| LD2981CM30TR | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD2981CM33TR | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD2981CM50TR | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD2981CU33TR | Active 产品已量产 | SOT-89 | Industrial | Ecopack2 | - | - | |
| LD2981CU50TR | Active 产品已量产 | SOT-89 | Industrial | Ecopack2 | - | - |
LD2981ABU33TR
Package:
SOT-89Material Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Grade | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | ||
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| LD2981ABU50TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD2981CM33TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD2981ABM50TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD2981CM30TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD2981ABU33TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD2981ABM30TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD2981ABM33TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD2981CU50TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD2981CM50TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD2981CU33TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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LD2981ABU50TR Active
LD2981CM33TR Active
LD2981ABM50TR Active
LD2981CM30TR Active
LD2981ABU33TR Active
LD2981ABM30TR Active
LD2981ABM33TR Active
LD2981CU50TR Active
LD2981CM50TR Active
LD2981CU33TR Active