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MAX769 데이터시트

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MAX769 IC PAGER SYSTEM 28-QSOP MaximIC
Maxim Integrated MaximIC
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General Description
The MAX769 is a complete buck/boost power supply and monitoring system for two-way pagers or other lowpower digital communications devices.

Features
♦ Regulated Step-Up/Step-Down Operation
♦ 80mA Output from 3 Cells
♦ 85% Efficiency
♦ 13µA Idle Mode™ (coast) Current
♦ Selectable Low-Noise PWM or Low-Current PFM Operation
♦ PWM Operating Frequency Synchronized to Seven Times an External Clock Source
♦ Operates at 270kHz with No External Clock
♦ Automatic Backup-Battery Switchover

Applications
    Two-Way Pagers
    GPS Receivers
    2 or 3-Cell Powered, Hand-Held Equipment

 

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