LT1083
LT1083
PRODUCTION7.5A, 5A, 3A Low Dropout Positive Adjustable Regulators
Viewing:
Overview
- 3-Terminal Adjustable
- Output Current of 3A, 5A or 7.5A
- Operates Down to 1V Dropout
- Guaranteed Dropout Voltage at Multiple Current Levels
- Line Regulation: 0.015%
- Load Regulation: 0.1%
- 100% Thermal Limit Functional Test
- Fixed Versions Available
The LT1083/LT1084/LT1085 series of positive adjustable regulators are designed to provide 7.5A, 5A and 3A with higher efficiency than currently available devices. All internal circuitry is designed to operate down to 1V input-to-output differential and the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at a maximum of 1.5V at maximum output current, decreasing at lower load currents. On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress on both the regulator and power source circuitry under overload conditions.
The LT1083/LT1084/LT1085 devices are pin compatible with older 3-terminal regulators. A 10μF output capacitor is required on these new devices. However, this is included in most regulator designs.
Unlike PNP regulators, where up to 10% of the output current is wasted as quiescent current, the LT1083 quiescent current flows into the load, increasing efficiency.
Applications
- High Efficiency Linear Regulators
- Post Regulators for Switching Supplies
- Constant Current Regulators
- Battery Chargers
This product is currently available in bare die form only and not available in our online eShop. To discuss availability or place an order, please contact your Sales representative or reach out to Analog Devices directly.
Documentation
Data Sheet 1
Application Note 6
Design Note 3
Technical Articles 1
Product Selector Card 1
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| LT1084 | PRODUCTION | 7.5A, 5A, 3A Low Dropout Positive Adjustable Regulators |
Tools & Simulations
LTspice 2
- LT1083 Demo Circuit - Low Dropout Positive Regulator (6.5-30V to 5V @ 7.5A)
- LT1083 Demo Circuit - 5V Regulator with Improved Ripple Rejection (6-17V to 5V @ 7.5A)
Models for the following parts are available in LTspice:
- LT1083
- LT1083-12
- LT1083-5
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.