Key facts
- Brand
- Linear Technology
- Model
- LTM2881
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-05
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linear DESIGN FEATURES LTJournal-V20N4-05-df-LTM2881-Keith_Bennett service manual
Linear Technology has developed a line of pModule isolators that reduce the design of isolated systems to simply plugging in a module, requiring no external components. The LTM2881 isolated RS485/RS422 transceiver and the LTM2882 dual isolated RS232 transceivers use magnetically coupled techniques to provide data and power isolation in a single surface mount package.
The document describes the operation of inductively coupled coils for data transmission, which supports a minimum throughput rate of approximately 21 Mbps. It also covers isolated power transmission using a full-bridge square wave oscillator and low-dropout linear regulator, offering input voltage ranges from 3V to 5.5V.
Linear Technology LTM2881 specifications
| Input Supply Voltage (LTM2881-5) | 5V DC |
|---|---|
| Input Supply Voltage (LTM2881-3) | 3.3V |
| Output Current (LTM2881-5) | 200mA |
| Output Current (LTM2881-3) | 120mA |
| Efficiency (LTM2881-5) | 62% |
| Efficiency (LTM2881-3) | 52% |
| Package Dimensions | 15mm x 11.25mm x 2.8mm |
Source: Linear Technology LTM2881 Application Note 125 Isolated Power Supply
All Linear Technology LTM2881 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the minimum data throughput rate of the LTM2881/LTM2882?
The encoding/decoding process supports a minimum data throughput rate of approximately 21mbps.
From: linear DESIGN FEATURES LTJournal-V20N4-05-df-LTM2881-Keith_Bennett service manual
Do these modules require external components?
No, pModule isolators require no external components at all.
From: linear DESIGN FEATURES LTJournal-V20N4-05-df-LTM2881-Keith_Bennett service manual
Does the LTM2881 require external components?
No, no external components are required as decoupling capacitors are integrated.
From: Linear Technology LTM2881 Application Note 125 Isolated Power Supply
What is the shutdown mode behavior of the LTM2881?
The device enters zero current shutdown mode when the ON pin is low.
From: Linear Technology LTM2881 Application Note 125 Isolated Power Supply