Key facts
- Brand
- Linear Technology
- Model
- LT1680
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-10
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Linear Technology LT1680 High Power DC/DC Step-Up Controller Datasheet
The LT1680 is a high‑power, current‑mode switching controller designed for boost topologies up to 60 V input. It features programmable average current limiting, a 5 V reference output capable of 10 mA, and a synchronizable oscillator up to 200 kHz.
The document provides detailed electrical characteristics, pin descriptions, typical performance curves, package dimensions for both PDIP and SOIC versions, and example circuits for 5 V‑to‑48 V boost converters.
Linear Technology LT1680 specifications
| Maximum Input Voltage | 60 V |
|---|---|
| Maximum Oscillator Frequency | 200 kHz |
| 5 V Reference Output Current | 10 mA |
| Gate Drive Capacitance | 10,000 pF |
Source: Linear Technology LT1680 High Power DC/DC Step-Up Controller Datasheet
All Linear Technology LT1680 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum operating frequency of the LT1680?
The controller can operate up to 200 kHz.
From: Linear Technology LT1680 High Power DC/DC Step-Up Controller Datasheet
What are the undervoltage lockout thresholds?
The falling threshold is about 9 V and the rising threshold about 9.35 V, with a hysteresis of roughly 350 mV.
From: Linear Technology LT1680 High Power DC/DC Step-Up Controller Datasheet
What is the maximum operating frequency of the LT1680?
The LT1680 can operate up to 200 kHz in free‑run mode.
What is the 5 V reference output current capability?
The 5 V reference output can source up to 65 mA.