National Semiconductor LP38690-ADJ, LP38692-ADJ 1A Low Dropout CMOS Linear Regulators with Adjustable Output, Stable with Ceramic Output Capacitors Data Manual User Guide
Summary
These adjustable 1A Low Dropout CMOS Linear Regulators provide reliable power management for sensitive electronics across various temperature ranges. The manual offers comprehensive technical specifications, including output voltage adjustment details, efficiency data up to 1A load current, and guide diagrams for utilizing SOT-223 and LLP packages. Essential for designers of battery-powered devices, portable instrumentation, notebook computers, and hard disk drives.
Manual Details
| Brand | National |
|---|---|
| Pages | 13 |
| File Size | 767.02 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
How is the regulated output voltage set using this device?
The adjust pin (ADJ) must be connected to external resistors R1 and R2.
What are the recommended conditions for stable operation?
Stability requires utilizing ceramic output capacitors with a minimum specified value.
What is the guaranteed low dropout voltage at 5V output and 1A load?
The typical low dropout voltage is 450mV.
How should an LLP package's ground pins (V) be connected for full operation?
Both V pins must be tied together to ensure full current operation, with a maximum of 500mA per pin.