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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所有功能
- 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符号、封装和3D模型
STMicroelectronics - LD2981
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符号
封装
3D模型
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| LD2981ABM30TR | 批量生产 | SOT23-5L | 工业 | Ecopack2 | |
| LD2981ABM33TR | 批量生产 | SOT23-5L | 工业 | Ecopack2 | |
| LD2981ABM50TR | 批量生产 | SOT23-5L | 工业 | Ecopack2 | |
| LD2981ABU33TR | 批量生产 | SOT-89 | 工业 | Ecopack2 | |
| LD2981ABU50TR | 批量生产 | SOT-89 | 工业 | Ecopack2 | |
| LD2981CM30TR | 批量生产 | SOT23-5L | 工业 | Ecopack2 | |
| LD2981CM33TR | 批量生产 | SOT23-5L | 工业 | Ecopack2 | |
| LD2981CM50TR | 批量生产 | SOT23-5L | 工业 | Ecopack2 | |
| LD2981CU33TR | 批量生产 | SOT-89 | 工业 | Ecopack2 | |
| LD2981CU50TR | 批量生产 | SOT-89 | 工业 | 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。
样片和购买
| 产品型号 | Order from distributors | 从ST订购 | 供货状态 | 等级规格 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | Country of Origin | Budgetary Price (US$)*/Qty | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | 单价(US$) | Country of Origin | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | ||||||||||||||||||||
| LD2981ABU50TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | Industrial | EAR99 | NEC | Tape and Reel | SOT-89 | -40 | 125 | 5 | 0.75 | 0.1 | CHINA | | 5 | 0.75 | 0.1 | 0.3185 | CHINA | ||
| LD2981CM33TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | Industrial | EAR99 | NEC | Tape and Reel | SOT23-5L | -40 | 125 | 3.3 | 0.75 | 0.1 | CHINA | | 3.3 | 0.75 | 0.1 | 0.3286 | CHINA | ||
| LD2981ABM50TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | Industrial | EAR99 | NEC | Tape and Reel | SOT23-5L | -40 | 125 | 5 | 0.75 | 0.1 | CHINA | | 5 | 0.75 | 0.1 | 0.3286 | CHINA | ||
| LD2981CM30TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | Industrial | EAR99 | NEC | Tape and Reel | SOT23-5L | -40 | 125 | 3 | 0.75 | 0.1 | CHINA | | 3 | 0.75 | 0.1 | 0.206 | CHINA | ||
| LD2981ABU33TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | Industrial | EAR99 | NEC | Tape and Reel | SOT-89 | -40 | 125 | 3.3 | 0.75 | 0.1 | CHINA | | 3.3 | 0.75 | 0.1 | 0.3185 | CHINA | ||
| LD2981ABM30TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | Industrial | EAR99 | NEC | Tape and Reel | SOT23-5L | -40 | 125 | 3 | 0.75 | 0.1 | CHINA | | 3 | 0.75 | 0.1 | 0.3286 | CHINA | ||
| LD2981ABM33TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | Industrial | EAR99 | NEC | Tape and Reel | SOT23-5L | -40 | 125 | 3.3 | 0.75 | 0.1 | CHINA | | 3.3 | 0.75 | 0.1 | 0.3286 | CHINA | ||
| LD2981CU50TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | Industrial | EAR99 | NEC | Tape and Reel | SOT-89 | -40 | 125 | 5 | 0.75 | 0.1 | CHINA | | 5 | 0.75 | 0.1 | 0.263 | CHINA | ||
| LD2981CM50TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | Industrial | EAR99 | NEC | Tape and Reel | SOT23-5L | -40 | 125 | 5 | 0.75 | 0.1 | CHINA | | 5 | 0.75 | 0.1 | 0.3286 | CHINA | ||
| LD2981CU33TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | Industrial | EAR99 | NEC | Tape and Reel | SOT-89 | -40 | 125 | 3.3 | 0.75 | 0.1 | CHINA | | 3.3 | 0.75 | 0.1 | 0.263 | CHINA | ||