8188中文資料ALLEGRO數(shù)據(jù)手冊PDF規(guī)格書

LOW-DROPOUT REGULATORS — HIGH EFFICIENCY

Designed specifically to meet the requirement for extended operation of battery-powered equipment such as cordless and cellular telephones, the A8188S— voltage regulators offer the reduced dropout voltage and quiescent current essential for maximum battery life. Applicable also to palmtop computers and personal data assistants, these devices deliver a regulated output at up to 250 mA (transient), which is limited only by package power dissipation. Regulated output voltages between 2.5 V and 3.3 V are trimmed at wafer probe.

FEATURES AND BENEFITS

■ High Efficiency Provides Extended Battery Life

■ 90 mV Typical Dropout Voltage at IO = 60 mA

■ 55 μA Typical Quiescent Current Less Than 1 μA “Sleep” Current

■ 250 mA Peak Output Current

■ Improved PSRR and Transient Performance

■ Internal Thermal Protection

APPLICATIONS

■ Cordless and Cellular Telephones

■ Personal Data Assistants

■ Personal Communicators

■ Palmtop Computers