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LX1708 Datasheet

  • LX1708

  • Microsemi Corporation [15+15W Stereo Filterless Class-D Amp...

  • 961.01KB

  • MICROSEMI

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LX1708
TM
廬
15+15W Stereo Filterless Class-D Amplifier
P
RODUCTION
D
ATA
S
HEET
DESCRIPTION
KEY FEATURES
Filter Free Operation
15W +15W Output Power @
4鈩?load: THD+N < 1%
High Efficiency > 85%
Full Audio Bandwidth: 20Hz to
20KHz
Low Distortion < 0.15% @ 30%
Max Power, 1KHz
High Signal-to-Noise Ratio:
90dB
Wide Supply Voltage Range
5.0V ~ 15V
Low Quiescent Current < 30mA
Turn ON/OFF POP Free
Standby / Mute Feature
Built-in Under Voltage Lockout
Thermal Protection
Short Circuit Protection
APPLICATIONS
The LX1708 is part of a new
generation of fully integrated stereo
class-D amplifiers from Microsemi.
This CMOS audio amplifier is
optimized
for
highly
efficient
operation and minimum system cost.
The stereo BTL (Bridge-tied-load)
configuration uses 3-level PWM
modulation. This allows eliminating
the LC filter to reduce the system cost
and simplify the system design. The
LX1708 outputs 15W into each of two
channels with better than 85%
efficiency.
The part features on鈥揵oard H-bridge
output stages with low RDSON.
External bootstrap capacitors are all that
is required to provide the gate drive to
the all-NFET output stage since on-
board bootstrap diodes are provided.
The LX1708 also features Mute and
Standby modes, over-current protection,
POP-free turn-on and turn-off, under-
voltage lockout, over-voltage protection,
and over-temperature protection.
The LX1708 is offered in a small
footprint, low profile surface mountable
32-pin Micro Lead Quad Package
(MLPQ) in 7mm x 7 mm.
WWW .
Microsemi
.C
OM
LCD TV
Car Navigation
Computer:
Portable Sound System
IMPORTANT:
For the most current data, consult
MICROSEMI鈥檚
website:
http://www.microsemi.com
PRODUCT HIGHLIGHT
STBY
5V
AVSS1
PVSS1N
OUT1N
BOOT1N
PVDD1
AVSS2
PVSS2N
OUT2N
BOOT2N
V5V
STATUS
N.C.
ROSC
TMON
PVDD
PVDD1
BOOT1P
OUT1P
LX1708
TCTRL
MUTE
VREF
IN1P
N.C.
STBY
PVDD2
PVDD2
BOOT2P
OUT2P
PVDD
PVSS1P
IN1N
PVSS2P
IN2P IN2N
IN2N
IN1N
IN1P
IN2P
MUTE
LX1708
LX1708
PACKAGE ORDER INFO
T
A
(擄C)
-40 to 85
LQ
Plastic MLPQ
32-Pin
7mmx7mm
LX1708ILQ
RoHS Compliant / Pb-free
Note: Available in Tape & Reel. Append the letters
鈥淭R鈥?to the part number. (i.e. LX1708ILQ-TR)
Copyright
漏
2004
Rev.1.2, 2007-01-05
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1

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