LP38691/3-ADJ is a low dropout CMOS linear regulator with adjustable output and stable performance with ceramic output capacitors. It provides a 2.0% precision reference voltage, extremely low dropout voltage (250mV @ 500mA load current, VOUT = 5V), and excellent AC performance. It is suitable for applications such as hard disk drives, notebook computers, battery-powered devices, and portable instrumentation.
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.
| 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 |
The typical dropout voltage is 250mV at 500mA load current with a 5V output.
The LP38691-ADJ and LP38693-ADJ are available in SOT-223 and 6-Lead LLP packages.
Yes, the LP38693-ADJ includes an enable pin, while the LP38691-ADJ does not.