Key facts
- Brand
- Linear Technology
- Model
- LTC1698
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-08
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Linear Technology LTC1698 Isolated Secondary Synchronous Rectifier Controller Datasheet
The LTC1698 provides a secondary‑side solution for isolated forward converters, delivering up to 0.8 % output voltage accuracy and high efficiency over a wide load range. It works with the LT3781 primary‑side controller to form a fully isolated power supply, offering features such as programmable current‑limit protection, over‑voltage fault protection, and a 3.3 V auxiliary logic supply.
The device includes dual N‑channel MOSFET drivers, optocoupler feedback, and a range of pins for synchronization, voltage monitoring, and power‑good signaling. It is offered in 16‑lead SSOP and SO packages and is suitable for industrial control, telecommunications, and automotive power systems.
Linear Technology LTC1698 specifications
| Supply Voltage (Vpp) | 6 V – 12.6 V |
|---|---|
| Input Voltage Range (MARGIN, Vep, OVPIN, Isysenp) | -0.3 V to 5.3 V |
| Operating Temperature Range | -40 °C to 85 °C |
| Lead Temperature (Soldering, 10 s) | 300 °C |
Source: Linear Technology LTC1698 Isolated Secondary Synchronous Rectifier Controller Datasheet
All Linear Technology LTC1698 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What bypass capacitor is required for the Vpp pin?
An external 4.7 µF bypass capacitor is required on the Vpp pin.
From: Linear Technology LTC1698 Isolated Secondary Synchronous Rectifier Controller Datasheet
What is the maximum input voltage rating for the LTC1698?
The absolute maximum rating for the input voltage is –0.3 V to 5.3 V.
What is the operating temperature range for the LTC1698E version?
The LTC1698E operates from –40 °C to 85 °C.