Product Summary

The UK 2,5B is an ultra-low supply current, low-dropout linear regulator. The UK 2,5B intended for low-power applications that demand the longest possible battery life. Unlike inferior PNP-based designs, the UK 2,5B PMOS pass elements maintain an ultra-low 2μA supply current throughout their entire operating range and in dropout. Despite their ultra-low power consumption, the MAX1725/MAX1726 have tight output accuracy (1.5%) and require just 1μF output capacitance to achieve good load-transient response. It is ideal for: (1)Smoke Detectors; (2)Remote Transmitters; (3)Smart Battery Packs; (4)Industrial Control Systems; (5)Microcontroller Power; (6)Real-Time Clock Backup Power; (7)PDAs and Handy-Terminals; (8)Battery-Powered Alarms.

Parametrics

UK 2,5B absolute maximum ratings: (1)in to gnd: -14v to +14v; (2)shdn to gnd: -0.3v to (vin + 0.3v); (-0.3v to + 0.3v when vin < 0v); (3)out, fb (max1725 only)to gnd: -0.3v to +6v when: vin >5.7v; -0.3v to (vin + 0.3v)when 0v <; vin < 5.7v; -0.3v to +0.3v when vin < 0v.; (4)out continuous current: 200ma; (5)OUT Short Circuit: Indefinite; (6)Continuous Power Dissipation (TA = +70°C)5-Pin SOT23-5 (derate 7.1mW/°C above +70°C): 571mW; (7)θJA : +140°C/W; (8)Junction Temperature: +150°C; (9)Operating Temperature Range: -40°C to +85°C; (10)Storage Temperature Range: -65°C to +150°C; (11)Lead Temperature (soldering, 10s): +300°C.

Features

UK 2,5B features: (1)2μA Supply Current; (2)Reverse-Battery Protection; (3)+2.5V to +12V Input Voltage Range; (4)Fixed 1.8V, 2.5V, 3.3V, and 5V Output Voltages (MAX1726); (5)Adjustable 1.5V to 5V Output Voltages (MAX1725); (6)20mA Guaranteed Output Current; (7)1.5% Output Voltage Accuracy; (8)Small 1μF Output Capacitor; (9)Short-Circuit Protection; (10)Thermal Protection; (11)Tiny 5-Pin SOT23 Package.

Diagrams

UK 2,5B pin connection