مدار مجتمع (آی سی) آی سی‌کاربرد ویژه

Product Attributes

Introduction

The PAM8904E is a piezo sounder driver with integrated charge pump boost converter. The PAM8904E is capable of driving a ceramic/piezo sounder with 27VPP from a 4.5V power supply. The charge pump can operate in either 1x, 2x or 3x mode. The boost converter operates at a fixed frequency of 100kHz and provides a 3X VIN output with a minimum number of external components. The PAM8904E can drive up to 47nF loading. Unique drive technology provides a small inrush current, low EMI and high efficiency. The PAM8904E includes built-in automatic shutdown and wake-up that guarantees longer battery life. The PAM8904E features thermal shutdown, overcurrent protection, overvoltage protection and undervoltage lockout. The PAM8904E is available in U-QFN3030-16 (Type B), U-QFN3030- 12 (Type A), W-QFN2020-12 (Type US) and U-QFN2020-12 (Type UX) packages.

Features

• Supply Voltage Range from 1.5V to 5.5V
• 18VPP Output from a 3V Supply
• Integrated Boost Converter Generates up to 13.5V Supply
• Input Signal 20Hz to 300kHz
• No Voltage Cross Output in Shutdown Mode
• Low Current Consumption
• Automatic Standby and Wake-up Control
• Available in Space Saving U-QFN3030-16 (Type B), U-QFN3030-12 (Type A), W-QFN2020-12 (Type US) and U-QFN2020-12 (Type UX) Packages
• Totally Lead-Free & Fully RoHS Compliant
• Halogen and Antimony Free. “Green” Device

Applications

• Health care systems
• Alarm clocks
• Security devices
• Home appliances