The MAX882/MAX883/MAX884 linear regulators maximize battery life by combining ultra-low supply currents and low dropout voltages. They feature 200mA output current capability at up to +125°C junction temperature and come in a 1.5W SOIC package. The 1.5W package (compared to 0.47W for standard SOIC packages) allows a wider operating range for the input voltage and output current. The MAX882/MAX883/MAX884 use a P-channel MOSFET pass transistor to maintain a low 11µA (15µA max) supply current from no-load to the full 200mA output. Unlike earlier bipolar regulators, there are no PNP base current losses that increase with output current. In dropout, the MOSFET does not suffer from excessive base currents that occur when PNP transistors go into saturation. Typical dropout voltages are 220mV at 5V and 200mA, or 320mV at 3.3V and 200mA. The MAX882 features a 7µA standby mode that disables the output but keeps the reference, low-battery comparator, and biasing circuitry alive. The MAX883/MAX884 feature a shutdown (OFF) mode that turns off all circuitry, reducing supply current to less than 1µA. All three devices include a low-battery-detection comparator, fold-back current limiting, reverse-current protection, and thermal-overload protection. The output is preset at 3.3V for the MAX882/MAX884 and 5V for the MAX883. In addition, all devices employ Dual Mode™ operation, allowing user-adjustable outputs from 1.25V to 11V using external resistors.
The MAX882, MAX883 and MAX884 are micropower, low‑dropout linear regulators designed for battery‑powered applications. They provide up to 200 mA output current, feature a P‑channel MOSFET pass transistor, and support Dual‑Mode operation for fixed or adjustable output voltages from 1.25 V to 11 V.
Key specifications include an input voltage range of 2.7 V to 11.5 V, typical dropout voltages of 220 mV (5 V output) or 320 mV (3.3 V output) at 200 mA, and ultra‑low quiescent currents. The devices are offered in various 8‑pin PDIP and SOIC packages.
| Input voltage range | 2.7 V to 11.5 V |
|---|---|
| Maximum output current | 200 mA |
| Typical dropout voltage (5 V output) | 220 mV at 200 mA |
| Typical dropout voltage (3.3 V output) | 320 mV at 200 mA |
| Quiescent current (typical) | 11 pA |
| Standby mode current | 7 A (standby mode) |
| Shutdown mode current | < 1 A |
The devices operate with an input voltage from 2.7 V up to 11.5 V.
Each regulator can deliver up to 200 mA of output current.
The typical dropout voltage is 220 mV under those conditions.
In standby mode the MAX882 draws about 7 A of current while keeping the reference circuitry active.