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.