This document introduces the features and characteristics of the LP38690/LP38692 1A low dropout CMOS linear regulators. The product has a typical output tolerance of 2.5%, an extremely low dropout voltage of 450mV at 1A load current, VOUT = 5V, and excellent AC performance using ultra low ESR ceramic output capacitors. The low thermal resistance of the LLP, SOT-223 and T0-252 packages allows the full operating current to be used even in high ambient temperature environments. The use of a PMOS power transistor means that no DC base drive current is required to bias it, allowing ground pin current to remain below 100µA regardless of load current, input voltage, or operating temperature.
The LP38690 and LP38692 are low dropout CMOS linear regulators designed to provide tight output tolerance and excellent AC performance. They utilize ultra low ESR ceramic output capacitors and feature a PMOS power transistor to minimize ground pin current. These devices are stable with ceramic capacitors and offer a wide input voltage range from 2.7V to 10V.
| Output Voltage Tolerance | 2.5% typical |
|---|---|
| Dropout Voltage | 450 mV typical @ 1A |
| Input Voltage Range | 2.7V to 10V |
| Operating Temperature Range | -40°C to +125°C |
| Quiescent Current | 55 pA typical |
These regulators are suitable for hard disk drives, notebook computers, battery powered devices, and portable instrumentation.
The devices are available in T0-252, SOT-223, and 6-Lead LLP packages.
Yes, the LP38692 includes an enable pin that allows the part to be turned ON and OFF.