1FEATURES

2· Maximize Battery Life and Minimize Heat

– 0.5-mA Shutdown Current

– 3-mA Quiescent Current

– High Efficiency Class-D

– 88% at 400mW at 8Ω

– 80% at 100mW at 8Ω

· Short Circuit Auto-recovery

· Gain of 2 V/V (6dB)

· Only One External Component Required

– Internal Matched Input Gain and Feedback

Resistors for Excellent PSRR and CMRR

– Optimized PWM Output Stage Eliminates

LC Output Filter

– PSRR (–75 dB) and Wide Supply Voltage

(2.5 V to 5.5 V) Eliminates Need for a

Dedicated Voltage Regulator

– Fully Differential Design Reduces RF

Rectification and Eliminates Bypass

Capacitor

– CMRR (–69 dB)Eliminates Two Input

Coupling Capacitors

· Thermal and Short-Circuit Protection

· Pinout Similar to the TPA2010D1

· Wafer Chip Scale Packaging (WCSP)

– NanoFree™ (YZF)

APPLICATIONS

· Wireless Handsets, PDAs, and other mobile

devices

DESCRIPTION

The TPA2035D1 is a 2.75-W high efficiency filter-free

class-D audio power amplifier in an approximately

1.5-mm × 1.5-mm wafer chip scale package (WCSP)

that requires only one external component. The

pinout is the same as the TPA2010D1 (SLOS417) except that the external gain setting input resistors

required by the TPA2010D1 are integrated into the

fixed gain of the TPA2035D1.

Features like –75dB PSRR and improved

RF-rectification immunity with a small PCB footprint

(WCSP amplifier plus single decoupling cap) make

the TPA2035D1 ideal for wireless handsets. A fast

start-up time of 3.2 ms with minimal pop makes the

TPA2035D1 ideal for PDA applications.

In wireless handsets, the earpiece, speaker phone,

and melody ringer can each be driven by the

TPA2035D1. The TPA2035D1 has a low 27-mV noise floor, A-weighted.