Key facts
- Brand
- Linear Technology
- Model
- LT1425
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-09
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Linear Technology LT1425 Isolated Flyback Switching Regulator Datasheet
The LT1425 is a monolithic high‑power switching regulator designed for isolated flyback topologies. It integrates the switch, oscillator, control and protection circuitry, eliminating the need for a third transformer winding or optoisolator.
Key features include an input range of 3 V‑20 V, up to 6 W output power, 285 kHz operating frequency, low 7 mA quiescent current, and a shutdown mode that reduces supply current to 15 µA. The device offers programmable output voltage, load‑compensation, and synchronization capabilities, making it suitable for isolated power supplies in Ethernet, medical, and telecom applications.
Linear Technology LT1425 specifications
| Input voltage range | 3 V to 20 V |
|---|---|
| Operating frequency | 285 kHz |
| Quiescent current (normal mode) | 7 mA |
| Shutdown mode supply current | 15 µA |
| Maximum output power | 6 W |
| Switch voltage rating | 35 V |
Source: Linear Technology LT1425 Isolated Flyback Switching Regulator Datasheet
All Linear Technology LT1425 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the operating frequency of the LT1425?
The LT1425 operates at about 285 kHz.
From: Linear Technology LT1425 Isolated Flyback Switching Regulator Datasheet
How much quiescent current does the LT1425 draw in normal operation?
It draws only 7 mA quiescent current.
From: Linear Technology LT1425 Isolated Flyback Switching Regulator Datasheet
What is the operating frequency of the LT1425?
The LT1425 operates at a switching frequency of 285 kHz.
What input voltage range does the LT1425 support?
It supports input voltages from 3 V up to 20 V.