Recherchez avec le numéro de pièce ainsi que le fabricant ou la description
DESCRIPTION MAS6240 is a piezo driver device that can drive outputs up to 18Vpp from 3V supply. An internal three-mode charge pump generates boosted supply voltage for piezo driver. For adjusting the piezo element sound volume, the charge pump can operate in either of a 1x, 2x or 3x mode. In 1x mode the input voltage is bypassed to the output, in 2x or 3x .
Thin 0.75 mm QFN 12 package Piezo Driver
• Three-Step Volume Adjusting
• Both Single Ended and Differential Output
• Up to 18Vpp Output from 3V Supply
• One Wire Audio & Shutdown Control Charge Pump
• Low External Part Count
• Solution without Inductors
• 1 MHz Switching Frequency
• Multi-Mode Charge Pump (1x/2x/3x)
APPLICATIONS
•Wrist Watches
•Alarm Clocks
•Handheld GPS devices
•PDAs
•Portable Device with Sound Feature
1 (10)
DA6240.001 20 November 2006
BLOCK & APPLICATION DIAGRAM
0.1uF 0.1uF
CP1 VIN (3V)
CN1
CP2
CN2
0.1uF
Oscillator 1MHz
1x/2x/3x Charge Pump
VOUT 0.1uF
EN1 EN2
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