1
FEATURES
APPLICATIONS
DESCRIPTION
APPLICATION CIRCUIT
_
+
IN−
IN+
PWM
H−
Bridge
V
O −
V
O +
Internal
Oscillator
To Battery
V
DD
GND
Bias
Circuitry
Differential
Input
TPA2035D1
SHUTDOWN
A1
A2
A3
B1
B2
B3
C1
C2
C3
IN+
GND
V
O−
V
DD
PV
DD
PGND
IN− SHUTDWN V
O+
1,4 mm
9-BALL WAFER CHIP SCALE, YZF PACKAGE,
(TOP VIEW OF PCB)
Note: Pin A1 is marked with a “0” .
1,55 mm
1,4 mm
1,55 mm
TPA
2035D1
0402
~
2,5 mm
~
1,7mm
C
S
C
S
TPA2035D1
www.ti.com
................................................................................................................................................................................................
SLOS562 – AUGUST 2008
2.75-W FIXED GAIN MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER
•
Wireless Handsets, PDAs, and other mobile
2
•
Maximize Battery Life and Minimize Heat
devices
–
0.5-
µ
A Shutdown Current
–
3-mA Quiescent Current
–
High Efficiency Class-D
The TPA2035D1 is a 2.75-W high efficiency filter-free
–
88% at 400mW at 8
Ω
class-D audio power amplifier in an approximately
–
80% at 100mW at 8
Ω
1.5-mm × 1.5-mm wafer chip scale package (WCSP)
that requires only one external component. The
•
Short Circuit Auto-recovery
pinout is the same as the TPA2010D1 (
SLOS417
)
•
Gain of 2 V/V (6dB)
except that the external gain setting input resistors
•
Only One External Component Required
required by the TPA2010D1 are integrated into the
fixed gain of the TPA2035D1.
–
Internal Matched Input Gain and Feedback
Resistors for Excellent PSRR and CMRR
Features
like
–75dB
PSRR
and
improved
–
Optimized PWM Output Stage Eliminates
RF-rectification immunity with a small PCB footprint
(WCSP amplifier plus single decoupling cap) make
LC Output Filter
the TPA2035D1 ideal for wireless handsets. A fast
–
PSRR (–75 dB) and Wide Supply Voltage
start-up time of 3.2 ms with minimal pop makes the
(2.5 V to 5.5 V) Eliminates Need for a
TPA2035D1 ideal for PDA applications.
Dedicated Voltage Regulator
In wireless handsets, the earpiece, speaker phone,
–
Fully Differential Design Reduces RF
and melody ringer can each be driven by the
Rectification and Eliminates Bypass
TPA2035D1. The TPA2035D1 has a low 27-
µ
V noise
Capacitor
floor, A-weighted.
–
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)
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
NanoFree is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
