LOW VOLTAGE TELEPHONE SPEECH CIRCUITS

DESCRIPTION The L3281 is an electronic speech circuit developed to replace hybrid circuits in telephone sets that can be operated in parallel with other phones. ■ OPERATION DOWN TO 1.6V / 6.5mA ■ DTMF & BEEP TONE INPUTS ■ EXTERNAL MUTING FOR EARPHONE AND MICROPHONE ■ SUITABLE FOR DYNAMIC

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STMICROELECTRONICS

意法半導體

3.3-V, 1.2-A, 6-MHz Miniature Step-Down DC-DC Converter

文件：1.10338 Mbytes 頁數(shù)：26 Pages

TI

德州儀器

LM3281 3.3-V, 1.2-A, 6-MHz Miniature Step-Down DC-DC Converter for Wireless Connectivity Solutions

1 Features 1? Operates from a Single Li-Ion Cell (3 V to 5.5 V) ? 6-MHz (typ.) PWM Switching Frequency ? Fixed Output Voltage: 3.3 V ? Up to 1.2-A Maximum Load Capability ? High Efficiency: 94% (typ.) with 3.8-V V IN at 300 mA ? Analog Bypass: 60-mV (typ.) Drop-Out at 600 mA ? Low I Q:

文件：654.77 Kbytes 頁數(shù)：25 Pages

TI

德州儀器

3.3-V, 1.2-A, 6-MHz Miniature Step-Down DC-DC Converter

文件：1.10338 Mbytes 頁數(shù)：26 Pages

TI

德州儀器