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National Semiconductor LP38691-ADJ/LP38693-ADJ Datasheet
The LP38691-ADJ and LP38693-ADJ are 500mA low dropout CMOS linear regulators designed to provide a stable output voltage with ceramic capacitors. These devices feature a precision 2.0% reference voltage and an extremely low dropout voltage of 250mV at a 500mA load current with a 5V output.
Available in SOT-223 and 6-Lead LLP packages, these regulators utilize a PMOS power transistor to minimize ground pin current to below 100 µA. They include features such as thermal overload protection, foldback current limiting, and a wide input voltage range from 2.7V to 10V.
National Semiconductor LP38691-ADJ specifications
| Output voltage range | 1.25V - 9V |
|---|---|
| Adjust pin voltage accuracy | 2.0% (25˚C) |
| Dropout voltage (typ) | 250mV @500mA (typ, 5V out) |
| Input voltage range | 2.7V to 10V |
| Operating temperature range | -40˚C to +125˚C |
| Quiescent current | 55 µA (typ) |
| Off-state quiescent current | 1µA |
| ESD Rating | 2 kV |
Source: National Semiconductor LP38691-ADJ/LP38693-ADJ Datasheet
All National Semiconductor LP38691-ADJ documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the dropout voltage of the LP38691-ADJ?
The typical dropout voltage is 250mV at 500mA load current with a 5V output.
From: National Semiconductor LP38691-ADJ/LP38693-ADJ Datasheet
What packages are available for these regulators?
The LP38691-ADJ and LP38693-ADJ are available in SOT-223 and 6-Lead LLP packages.
From: National Semiconductor LP38691-ADJ/LP38693-ADJ Datasheet
What is the typical dropout voltage at 500 mA?
The typical dropout voltage is 250 mV when delivering 500 mA with a 5 V output.
From: National Semiconductor LP38691-ADJ / LP38693-ADJ Adjustable Low Dropout Linear Regulator Datasheet
How accurate is the adjust pin voltage?
The adjust pin voltage accuracy is 2.0 % at 25 °C.
From: National Semiconductor LP38691-ADJ / LP38693-ADJ Adjustable Low Dropout Linear Regulator Datasheet