MAX769 2 or 3-Cell / Step-Up/Down / Two-Way Pager System

Maxim

Description

19-4771; Rev 1; 10/98 ANUAL N KIT M EET IO T A U EVAL TA SH WS DA FOLLO 2 or 3-Cell, Step-Up/Down, Two-Way Pager System IC _________________________.
The MAX769 is a complete buck/boost power supply and monitoring system for two-way pagers or other lowpower digital communications devices.

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Datasheet Specifications

Part number: MAX769
Manufacturer: Maxim
File Size: 161.65 KB
Datasheet: MAX769_MaximIntegratedProducts.pdf
Description: 2 or 3-Cell / Step-Up/Down / Two-Way Pager System

Features

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

Applications

* Two-Way Pagers GPS Receivers 2 or 3-Cell Powered, Hand-Held Equipment ___________________________________________________Typical Operating Circuit INPUT 2 OR 3 AA ALKALINE BATTERIES 1.5V TO 5.5V LOW-BATTERY IN/OUT REJECT IN/OUT LBI LBO RSIN RSO CS SCL SD1 SD03 DR1 DR2 DR2IN DRGND BATT LX1 LX2 OUT

MAX769 Distributors

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MAX769 3-Cell Step-Up Down Two-Way Pager System Maxim

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