LME49810TB/NOPB National Semiconductor, LME49810TB/NOPB Datasheet

IC AMP AUDIO PWR 300W TO247-15

LME49810TB/NOPB

Manufacturer Part Number
LME49810TB/NOPB
Description
IC AMP AUDIO PWR 300W TO247-15
Manufacturer
National Semiconductor
Type
Class ABr
Datasheet

Specifications of LME49810TB/NOPB

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
300W x 1 @ 8 Ohm
Voltage - Supply
±20 V ~ 100 V
Features
Mute, Thermal Protection
Mounting Type
Through Hole
Package / Case
TO-247-15 (Bent and Staggered Leads)
Amplifier Class
AB
No. Of Channels
1
Output Power
300W
Supply Voltage Range
± 20V To ± 100V
Load Impedance
8ohm
Operating Temperature Range
-40°C To +85°C
Amplifier Case Style
TO-247
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LME49810TB

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LME49810TB/NOPB
Manufacturer:
TI
Quantity:
1 000
© 2007 National Semiconductor Corporation
LME49810
200V Audio Power Amplifier Driver with Baker Clamp
General Description
The LME49810 is a high fidelity audio power amplifier driver
designed for demanding consumer and pro-audio applica-
tions. Amplifier output power may be scaled by changing the
supply voltage and number of power transistors. The
LME49810’s minimum output current is 50mA. When using a
discrete output stage the LME49810 is capable of delivering
in excess of 300 watts into a single-ended 8Ω load.
Unique to the LME49810 is an internal Baker Clamp. This
clamp insures that the amplifier output does not saturate
when over driven. The resultant “soft clipping” of high level
audio signals suppresses undesirable audio artifacts gener-
ated when conventional solid state amplifiers are driven hard
into clipping.
The LME49810 includes thermal shutdown circuitry that ac-
tivates when the die temperature exceeds 150°C. The
LME49810’s mute function, when activated, mutes the input
drive signal and forces the amplifier output to a quiescent
state.
Boomer® is a registered trademark of National Semiconductor Corporation.
Tru-GND is a trademark of National Semiconductor Corporation.
202167
Key Specifications
Features
Applications
■ 
■ 
■ 
■ 
■ 
Very high voltage operation
Output clamp logic output
Thermal shutdown and mute
Customizable external compensation
Scalable output power
Guitar amplifiers
Powered studio monitors
Powered subwoofers
Pro audio
Audio video receivers
High voltage industrial applications
Wide operating voltage range
Slew Rate
Output Drive Current
PSRR (f = DC)
THD+N (f = 1kHz)
September 2007
±20V to ±100V
www.national.com
50V/μs (typ)
0.0007 (typ)
110dB (typ)
60mA (typ)

Related parts for LME49810TB/NOPB

LME49810TB/NOPB Summary of contents

Page 1

... The LME49810’s mute function, when activated, mutes the input drive signal and forces the amplifier output to a quiescent state. Boomer® registered trademark of National Semiconductor Corporation. Tru-GND is a trademark of National Semiconductor Corporation. © 2007 National Semiconductor Corporation Key Specifications ■ ...

Page 2

Typical Application www.national.com FIGURE 1. LME49810 Audio Amplifier Schematic 2 20216772 ...

Page 3

Connection Diagram Pin Descriptions Pin Pin Name 1 ClpFlag 2 Mute 3 GND 4 IN+ 5 IN– 6 Comp Osense – Bias M 12 Bias P 13 Sink 14 Source 15 +V ...

Page 4

FIGURE 2. LME49810 Simplified Schematic 4 20216708 ...

Page 5

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage | Differential Input Voltage Common Mode Input Range Power Dissipation (Note 3) ESD Susceptibility (Note 4) ESD Susceptibility (Note 5) Junction Temperature (T ) (Note 9) ...

Page 6

Note 1: All voltages are measured with respect to the GND pin unless otherwise specified. Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional ...

Page 7

FIGURE 3. LME49810 Test Circuit Schematic (DC Coupled) 7 20216709 www.national.com ...

Page 8

Typical Performance Characteristics THD+N vs Frequency +V = –V = 20V THD+N vs Frequency +V = –V = 50V THD+N vs Frequency +V = –V = 100V www.national.com (Note 10) = ...

Page 9

THD+N vs Output Voltage +V = – 50V 20Hz CC EE 20216757 THD+N vs Output Voltage +V = –V = 50V 1kHz CC EE 20216753 THD+N vs Output Voltage +V = –V = 50V, ...

Page 10

THD+N vs Output Voltage +V = –V = 20V 20Hz CC EE THD+N vs Output Voltage +V = –V = 20V 20kHz CC EE Closed Loop Frequency Response +V = –V = 100V ...

Page 11

PSRR vs Frequency +V = –V = 100V Filters, Input referred RIPPLE Output Voltage vs Supply Voltage Supply Current vs Supply Voltage Mute Attenuation pin RMS EE 20216727 Slew Rate ...

Page 12

Open Loop Gain and Phase Margin +V = –V = 100V CC EE Noise Floor +V = –V = 50V Baker Clamp Flag Output +V = –V = 100V Ch1: Output, ...

Page 13

Application Information MUTE FUNCTION The mute function of the LME49810 is controlled by the amount of current that flows into the MUTE pin. LME49810 typically requires 50μA to 100μA of mute current flowing in order “play” mode. ...

Page 14

LME49810 is equal to the following θ −T DMAX JMAX AMB where T = 150° the system ambient tempera- JMAX AMB ture and ...

Page 15

The V voltage of Q (also called BIAS of the CE MULT output stage) can be set by following formula (1 (V) BIAS BE B2 ...

Page 16

Demo Board Schematic www.national.com FIGURE 4. LME49810 Test demo board schematic 16 20216707 ...

Page 17

Demonstration Board Layout Silkscreen Layer Top Layer 17 20216704 20216706 www.national.com ...

Page 18

Bottom Layer 18 20216703 ...

Page 19

Revision History Rev 1.0 1.01 1.02 Date 05/24/07 05/29/07 09/17/07 Edited curve 20216724. 19 Description Initial WEB release. Few text edits. www.national.com ...

Page 20

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted TO–247 15–Lead Package Order Number LME49810TB NS Package Number TB15A 20 ...

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Notes 21 www.national.com ...

Page 22

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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