The LM8805 is a low dropout linear regulator that operates from a +2.5V to +7.0V input supply. The output voltage is available in a wide range of preset options. The LM8805 series features low power consumption and high accuracy through CMOS technology and internal trimmed reference voltage. The LM8805 series consists of a high-precision voltage reference, error correction circuit, and a current limit output driver.
The LM8805 is a low‑dropout (LDO) regulator delivering up to 650 mA with a typical dropout voltage of 600 mV. It offers a selectable output voltage from 0.9 V to 5.4 V, high accuracy (±1.5 %), and built‑in protection features such as over‑temperature shutdown and current limiting.
The device is supplied in an SOT‑89 package and is stable with output capacitors of 2.2 µF or greater. Recommended layout guidelines include a solid ground plane and low‑ESR capacitors for optimal performance.
| Output Voltage Range | 0.9 V to 5.4 V |
|---|---|
| Maximum Output Current | 650 mA |
| Typical Dropout Voltage (650 mA) | 600 mV |
| Output Voltage Accuracy | ±1.5 % |
| Quiescent Current | 50 µA – 70 µA |
| Over‑Temperature Shutdown | Enabled |
| Current Limiting | Enabled |
| Power‑Saving Shutdown Mode | Enabled |
| Low Temperature Coefficient | Enabled |
| Moisture Sensitivity Level | 3 |
The LM8805 can deliver up to 650 mA of output current.
Typical dropout voltage is about 600 mV when delivering 650 mA.
The quiescent current is typically 50 µA, ranging up to 70 µA.
It supports selectable output voltages from 0.9 V to 5.4 V.