1FEATURES

2· 19 VPP Output Load Voltage From a 2.5 V

Supply

· Integrated DC-DC Converter Generates 10 V

Supply

· No External Schottky Diode Required

· Integrated Audio Input Low-Pass Filter

· Small Boost Converter Inductor

· Supply Voltage Range From 2.5 V to 5.5 V

· Selectable Gain of 12 dB, 16 dB, and 24 dB

· Independent Shutdown Control for the Boost

Converter and the Audio Amplifier

· Fast Startup Time: 8 ms

· Low Supply Current: 5.5 mA

· Low Shutdown Current: < 1 mA

· Short-Circuit and Thermal Protection

· Space Saving Package

– 2,1 mm × 2,1 mm NanoFree™ WCSP (YZH)

APPLICATIONS

· Wireless or Cellular Handsets

· Portable DVD Player

· Personal Digital Assistants (PDAs)

· Electronic Dictionaries

· Digital Still Cameras

DESCRIPTION

The TPA2100P1 (sometimes referred to as TPA2100)

is a mono, Class-D audio power amplifier with

integrated DC-DC converter designed for piezo and

ceramic speakers. The TPA2100P1 (TPA2100) is capable of driving a ceramic / piezo speaker with

19 VPP (6.7 VRMS) from a 2.5 V power supply at less

than 1% THD+N.

The DC-DC converter operates at a fixed frequency

of 1.2 MHz. The TPA2100P1 (TPA2100) DC-DC

converter provides a 10 V supply with a minimum

number of external components. The DC-DC converter can be used to drive other components that

require a 10 V supply voltage (note: audio signal

must be present for proper functionality of boost

converter).

The TPA2100P1 (TPA2100) features an integrated

audio low pass filter that rejects high frequency noise (CODEC out-of-band and RF noise) thus improving

audio fidelity.

The TPA2100P1 (TPA2100) has three gain modes of

12 dB, 16 dB, and 24 dB. The TPA2100P1

(TPA2100) provides thermal and short circuit

protection on the boost converter and the Class-D

audio amplifier. The TPA2100P1 (TPA2100) is

available in a 16-ball 2,1 mm × 2,1 mm WCSP

package. The TPA2100P1 (TPA2100) requires only one small external inductor for operation.