19-1679; Rev 0; 4/00
12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK
General Description
The MAX8880/MAX8881 ...
19-1679; Rev 0; 4/00
12V, Ultra-Low-IQ, Low-Dropout Linear
Regulators with POK
General Description
The MAX8880/MAX8881 are ultra-low supply current, low-dropout linear
regulators, capable of delivering up to 200mA. They are designed for battery-powered applications where reverse battery protection and long battery life are critical. These
regulators’ low 3.5µA supply current extends battery life in applications with long standby periods. Unlike
PNP-based designs, a 2Ω PMOS device maintains ultra-low supply current throughout the entire operating range and in dropout. The parts are internally protected from output short circuits, reverse battery connection, and thermal overload. An internal powerOK (POK) comparator indicates when the output is out of regulation. The MAX8880 output is adjustable from 1.25V to 5V using an external resistor-divider. The MAX8881 provides only factory-preset output voltages of 1.8V, 2.5V, 3.3V, or 5V (see Ordering Information). Both devices are available in miniature 6-pin SOT23 packages. o 3.5µA Supply Current at 12V o Reverse Battery Protection o 2.5V to 12V Input Voltage Range o ±1.5% Output Voltage Accuracy o 200mA max Output Current o 2Ω PMOS Output Device o Short-Circuit and Thermal Overload Protection o POK Output for Out-of-Regulation Indicator o Fixed 1.8V, 2.5V, 3.3V, and 5V (MAX8881) Adjustable from 1.25V to 5V (MAX8880) o Tiny 6-Pin SOT23 Package
Features
MAX8880/MAX8881
________________________Applications
Smoke Detectors Battery-P...