The ADP667 is a low dropout precision voltage regulator capable of providing up to 250 mA output current. It can be used to provide a fixed +5 V output with no additional external components or can be adjusted from +1.3 V to +16 V using two external resistors. Fixed or adjustable operation is automatically selected via the SET input. The low quiescent current (20 µA) in conjunction with the high efficiency make this device particularly suitable for use in portable and battery powered applications.
The ADP667 is a low‑dropout precision linear voltage regulator that can supply up to 250 mA. It offers a fixed +5 V output or an adjustable range from +1.3 V to +16 V, with automatic selection via the SET pin. The device features extremely low quiescent current (20 µA normal, 0.2 nA shutdown) and integrated low‑battery and dropout detection.
Designed for handheld instruments, cellular phones, battery‑operated devices, and other portable equipment, the ADP667 operates from a 3.5 V to 16.5 V input range. It is available in 8‑lead DIP and narrow‑body SOIC packages and includes pin‑compatible replacement for the MAX667.
| Input Voltage Range | 3.5 V – 16.5 V |
|---|---|
| Fixed Output Voltage | +5 V |
| Maximum Output Current | 250 mA |
| Quiescent Current (Shutdown Mode) | 0.2 nA |
| Typical Dropout Voltage | 150 mV @ 200 mA |
| Load Regulation | 50 mV – 100 mV (10 mA‑200 mA) |
| Line Regulation | 5 mV – 10 mV (Vin 6 V‑10 V) |
| Maximum Power Dissipation (N‑8 package, 85 °C ambient) | 333 mW |
The ADP667 can supply up to 250 mA of output current.
In shutdown mode the quiescent current is only 0.2 nA.
The device operates with an input voltage from 3.5 V to 16.5 V.
The LBI pin compares the input voltage to a 1.255 V reference; when it falls below this threshold the LBO output goes low.