8220中文资料ALLEGRO数据手册PDF规格书

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 A8220SLH thru A8233SLH 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 100 mA (transient), which is limited only by package power dissipation. Regulated output voltages of 2.6, 2.7, 2.8, 2.9, 3.0 and 3.3 are currently

provided. Other voltages, down to 2.0 volts, are available on special order.

FEATURES AND BENEFITS

■ High Efficiency Provides Extended Battery Life

■ 125 mV Typical Dropout Voltage at IO = 50 mA

■ 32 µA Typical Quiescent Current

Less Than 1 µA “Sleep” Current

■ Low Output Noise

■ 100 mA Peak Output Current

■ Improved PSRR and Transient Performance

APPLICATIONS

■ Cordless and Cellular Telephones

■ Personal Data Assistants

■ Personal Communicators

■ Palmtop Computers