Key facts
- Brand
- Linear Technology
- Model
- LTC1983-5
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2023-10-20
Start here
Linear Technology LTC1983-5 100mA Negative 5V Power Supply Quick Start Guide
This guide explains how to set up and operate the LTC1983-5 charge pump inverter, which generates a regulated -5V output at up to 100mA from a 3V to 6V input. It is designed for compact applications like portable devices and single-supply systems needing low quiescent current. The circuit uses small surface-mount components for minimal board space.
To use, connect input power between Vin and GND, attach a load between GND and Vout, and toggle JP1 to enable or disable operation.
Linear Technology LTC1983-5 specifications
| Fixed Output Voltages | -3V or -5V |
|---|---|
| Output Current Capability | 100mA |
| Operating Voltage Range (LTC1983-3) | 3V to 5.5V |
| Operating Voltage Range (LTC1983-5) | 2.3V to 5.5V |
| Quiescent Current | 25uA typical |
| Oscillator Frequency | 900kHz |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 6-pin ThinSOT |
All Linear Technology LTC1983-5 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
The shortest path to a working setup, usually only a few pages.
Questions answered in these manuals
What output voltage and current does the LTC1983-5 demonstration circuit produce?
The circuit produces a regulated negative –5V output voltage at up to 100mA of output current.
From: Linear Technology LTC1983-5 100mA Negative 5V Power Supply Quick Start Guide
What is the acceptable input voltage range for the circuit?
The input voltage is limited to between 3V to 5.5V.
From: Linear Technology LTC1983-5 100mA Negative 5V Power Supply Quick Start Guide
What are the fixed output voltages for the LTC1983-3 and LTC1983-5?
The LTC1983-3 provides a fixed -3V output, while the LTC1983-5 provides a fixed -5V output.
What is the maximum output current capability?
The devices can provide up to 100mA of output current.
What is the typical quiescent current of the LTC1983‑3/5?
The device draws about 25 µA of quiescent current in normal operation.
What voltage level triggers the shutdown pin?
The SHDN pin has a threshold of approximately 0.7 V; a low level shuts the device down.