18VPP OUTPUT PIEZO SOUNDER DRIVER - Diodes
Description
PAM8904E
18VPP OUTPUT PIEZO SOUNDER DRIVER
Description
The DIODES™ 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.
Diodes Incorporated’s 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, over current protection, over voltage protection and under voltage lock-out.
The PAM8904E is available in U-QFN3030-16 (Type B), U-QFN303012 (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 UQFN2020-12 (Type UX) Packages Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free.
“Green” Device (Note 3) For automotive applications requiring specific change control (i.
e.
parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative.
https://www.
diodes.
com/quality/product-definitions/
Pin Assignments
U-QFN3030-16 (Type B)
Pin 1
NC VIN CP2 VOUT 16 15 14 13
EN1 1
12 NC
EN2 2
11 CP1
DIN 3
10 CN2
NC 4
9 VO1
5 6 78
CN1 GND VO2 NC
Top View
U-QFN3030-12 (Type A)/W-QFN2020-12 (Type US)/ U-QFN2020-12 (Type UX)
Pin 1
VIN CP2 VO...
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