LX1725ILQ Microsemi Analog Mixed Signal Group, LX1725ILQ Datasheet

LX1725ILQ

Manufacturer Part Number

LX1725ILQ

Description

IC AMP AUDIO 32W STER D 32MLPQ

Manufacturer

Microsemi Analog Mixed Signal Group

Series

AudioMAX™r

Type

Class Dr

Datasheet

1.LX1725ILQ.pdf (23 pages)

Specifications of LX1725ILQ

Output Type

1-Channel (Mono) or 2-Channel (Stereo)

Max Output Power X Channels @ Load

32W x 1 @ 8 Ohm; 16W x 2 @ 4 Ohm

Voltage - Supply

12 V ~ 35 V, ±6 V ~ 17.5 V

Features

Depop, Differential Inputs, Mute, PWM, Short-Circuit and Thermal Protection, Standby

Mounting Type

Surface Mount

Package / Case

32-MLPQ

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Rev. 1.2, 2005-12-06

new generation of fully integrated

stereo

Microsemi. The fully integrated half-

bridge output for each channel works

with both split and single power

supply operation. The outputs can be

bridged to run in BTL (Bridge Tied

Load) mode. In BTL mode, 3-level

modulation is used which allow

operation without an L-C filter to

reduce system cost and area. The

LX1725 has >90% efficiency, with

typical output power up to 15W+15W

in stereo, and 30W BTL into a 4Ω

load with less than 1% THD+N. The

amplifier operates over a wide supply

voltage range of ±6V to ±15V split

supply or 12V to 30V single supply,

and consumes a very little quiescent

current.

IMPORTANT: For the most current data, consult MICROSEMI’s website:

The Microsemi LX1725 is part of a

Sychronize

VCOM

VNEG

IN2N

IN2P

FLAG

VCOM

VPOS

class-D

IN1N

IN1P

1µF 35V

OSC

amplifiers

1µF

LIM

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

P R O D U C T H I G H L I G H T

VPOSA

VCOMA

SYNC

FLAG

RILIM

VREF

COSC

VNEGA

D E S C R I P T I O N

from

LX1725

Note: Available in Tape & Reel. Append the letters “TR” to the part

-40 to +85

Standby modes, over-current protection,

POP-free turn-on and turn-off, under-

voltage lockout, over-voltage protection

and over-temperature protection. All

built-in

automatic recovery when the fault

condition has been cleared. The gain is

pin selectable between 14 / 20 / 26dB to

accommodate different signal source

amplitudes. Several LX1725s can be

easily synchronized together to prevent

beat frequency interference in multi-

channel applications..

pin package with a 7mmx7mm small

outline surface mount.

(°C)

number. (i.e. LX1725ILQ-TR)

The LX1725 features Mute and

The LX1725 comes in a MLPQ 32

VNEG1

VNEG2

VPOS1

VPOS2

MASTER

OUT1

OUT2

STBY

P A C K A G E O R D E R I N F O

4.7µF

35V

Integrated Products Division

+5V

protection

VCOM

22µH

Microsemi

22µH

http://www.microsemi.com

VNEG

820nF

RoHS Compliant / Pb-free

Plastic MLPQ

32-PIN

VNEGA

STBY

VPOS

MUTE / GAIN

820nF

Master / Slave

HIGAIN

modes

LX1725ILQ

15W+15W Stereo Class-D Amplifier

allow

Filterless 30W Mono in BTL

RODUCTION

12Wx2 @ 4Ω THD+N<1%

16Wx2 @ 4Ω THD+N<10%

25W BTL @ 8Ω THD+N<1%

32W BTL @ 8Ω THD+N<10%

High Efficiency: >90% @8Ω

Full Audio Band: 20Hz~20KHz

Low Distortion:

<0.1% @1KHz, 8Ω

<0.4% @20~20KHz, 8Ω

High Signal-to-Noise Ratio:

>85dB non A-Weighted

Split/Single Power Supply

Wide Supply Voltage Range:

±6V ~ ±15V or 12V ~ 30V

Low Quiescent Current <20mA

Turn ON/OFF POP Free

STANDBY/MUTE Feature

Programmable Gain

14/20/26dB

Built-in Over Current Protection

Built-in Under Voltage Lockout

Thermal Shut Down

Power Limiting Based on Die

Temperature (gain fold back)

Synchronization

LCD TV, PDP Sets

CD/DVD Combo Player

Combo DVD 5.1 Amplifier

Home Theater System

Computer Speaker System

Game Machine

K E Y F E A T U R E S

ATA

A P P L I C A T I O N S

HEET

LX1725

Page

Related parts for LX1725ILQ

LX1725ILQ Summary of contents

Page 1

... VNEGA Plastic MLPQ LQ T (°C) 32-PIN J RoHS Compliant / Pb-free -40 to +85 LX1725ILQ Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1725ILQ-TR) Microsemi Integrated Products Division LX1725 Filterless 30W Mono in BTL RODUCTION ATA HEET 12Wx2 @ 4Ω THD+N<1% 16Wx2 @ 4Ω ...

Page 2

Supply Voltage (VPOS/VNEG, VPOSA/VNEGA)......................... -0.3V to ±15V or 30V Common Supply Voltage (VCOM, VCOMA)................................. -0.3V to ±15V ...

Page 3

Name Analog voltage sense ...

Page 4

Name HIGAIN High Gain ...

Page 5

TM Notes: Unless otherwise specified, the following specifications apply over the operating ambient temperature T where otherwise noted (typical @ T A VCOM = 50Kohm, C ILIM OSC Parameter OSCILLATOR Oscillator Frequency Voltage Stability Temperature Stability POWER ...

Page 6

Notes: Unless otherwise ...

Page 7

Notes: Unless otherwise specified, the following specifications apply over the operating ambient ...

Page 8

TM STBY V5V OVP & OTP & VREF UVLO & Reference FAULT FLAG SYNC COSC OSC MASTER MUTE INM - + INP VREF EAOUT VGND FB Copyright © 2004 Rev. 1.2, 2005-12-06 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, ...

Page 9

TM O SCILLATOR LX1725 has a fixed PWM modulation frequency, but it is programmable by using an external capacitor connected to C pin to GND. The switching frequency is approximately 235KHz with capacitor’s value 220pF. With the capacitor value given, ...

Page 10

TAND BY Forcing the STBY pin high puts ...

Page 11

TM V5V C7 1µF 35V IN1- IN1+ C8 1µF 35V VPOS C100 JP1 SYNC 0.1µF 35V FLAG R1 25K + C101 C12 1µF 35V JP2 0.1µF 35V C11 220pF VNEG C9 1µF 35V IN2- IN2+ C10 1µF 35V V5V C5 ...

Page 12

TM +5V Power Supply GND OUT1- Audio OUT1+ Precision GND OUT2- OUT2+ System One LX1725 Evaluation Module Driver & Logic LX1725 Copyright © 2004 Rev. 1.2, 2005-12-06 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 15W+15W Stereo Class-D ...

Page 13

100 8OHM Load, Fin=1KHz 10Hz~22KHz BPF 10 1 0.21647 0.1 % 0.059 0.01 0.001 0.0001 1.025 60m 100m 200m 500m ...

Page 14

dx=0.00000 Hz 100 8OHM Load, Po=1W 10Hz~22KHz BPF 10 1 ±12V % 0 001 20 50 100 200 500 ...

Page 15

– +30 8OHM Load , Vin=200mVrms +28 10Hz~80KHz BPF , +/-12V +26 +24 +22 +20 +18 + +14 r +12 + ...

Page 16

Supply (+/-V) IPOS ...

Page 17

Supply (+/-V) 1%THD P O ...

Page 18

TM HIGAIN IN1P 1µF IN1N 1µF VPOS VCOM Sychronize FLAG 50K 1µF 35V 150 - 220pF VNEG 1µF IN2P 1µF IN2N Note: This design for Typical 4Ω load, other than 4Ω. Please refer to application notes AN-35 to change L.C. ...

Page 19

VCOM IN1P 4.7µF 35V 1µF IN1N 1µF ...

Page 20

TM PCB D G ESIGN UIDELINES One of the key efforts in implementing the MLP package board is the design of the land pattern. The MLP has rectangular metallized terminals exposed on the bottom surface of the ...

Page 21

The LX1725 is supplied in an MLPQ-7mmx7mm, 32 pin ...

Page 22

TM LQ 32-Pin Package Description (Micro Lead Quad Package Note: Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006”) on any side. Lead dimension shall not include solder coverage. Copyright © 2004 ...

Page 23

TM PRODUCTION DATA – Information contained in this document is proprietary to Microsemi and is current as of publication date. This document may not be modified in any way without the express written consent of Microsemi. Product processing does not ...

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