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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.
主要特性
- 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
精选 视频
All resources
产品规格 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 04 May 2016 |
04 May 2016
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选型指南 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 04 Jan 2021 |
04 Jan 2021
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手册 (2)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 15 Feb 2019 |
15 Feb 2019
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| 26 Feb 2020 |
26 Feb 2020
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - LD2981
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Symbols
Footprints
3D models
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 | 从分销商订购 | 从ST订购 | 供货状态 | 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 | 更多信息 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||||
| LD2981ABU50TR | 5 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT-89 | -40 | 125 | 5 | 0.75 | 0.1 | CHINA | 0.209 / 1k | ||
| LD2981CM33TR | 7 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | 3.3 | 0.75 | 0.1 | CHINA | 0.217 / 1k | ||
| LD2981ABM50TR | 7 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | 5 | 0.75 | 0.1 | CHINA | 0.262 / 1k | ||
| LD2981CM30TR | 2 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | 3 | 0.75 | 0.1 | MALAYSIA | 0.217 / 1k | ||
| LD2981ABU33TR | 6 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT-89 | -40 | 125 | 3.3 | 0.75 | 0.1 | CHINA | 0.209 / 1k | ||
| LD2981ABM30TR | 5 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | 3 | 0.75 | 0.1 | MALAYSIA | 0.262 / 1k | ||
| LD2981ABM33TR | 6 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | 3.3 | 0.75 | 0.1 | CHINA | 0.262 / 1k | ||
| LD2981CU50TR | 6 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT-89 | -40 | 125 | 5 | 0.75 | 0.1 | CHINA | 0.166 / 1k | ||
| LD2981CM50TR | 4 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | 5 | 0.75 | 0.1 | CHINA | 0.217 / 1k | ||
| LD2981CU33TR | 5 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT-89 | -40 | 125 | 3.3 | 0.75 | 0.1 | CHINA | 0.166 / 1k | ||