LME49830TB/NOPB National Semiconductor, LME49830TB/NOPB Datasheet

IC AMP AUDIO MONO HIFI TO247-15

LME49830TB/NOPB

Manufacturer Part Number
LME49830TB/NOPB
Description
IC AMP AUDIO MONO HIFI TO247-15
Manufacturer
National Semiconductor
Type
Class ABr
Datasheet

Specifications of LME49830TB/NOPB

Output Type
1-Channel (Mono)
Voltage - Supply
±20 V ~ 100 V
Features
Mute, Thermal Protection
Mounting Type
Surface Mount
Package / Case
TO-247-15 (Bent and Staggered Leads)
For Use With
LME49830TBBD - BOARD EVALUATION FOR LME49830
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Max Output Power X Channels @ Load
-
Other names
*LME49830TB/NOPB
LME49830TB
LME49830TB-5
LME49830TB

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© 2008 National Semiconductor Corporation
LME49830
Mono High Fidelity 200 Volt MOSFET Power Amplifier Input
Stage with Mute
General Description
The LME49830 is a high fidelity audio power amplifier input
stage designed for demanding consumer and pro-audio ap-
plications. Amplifier output power may be scaled by changing
the supply voltage and number of output devices. The
LME49830 is capable of driving an output stage in excess of
300 W single-ended into an 8Ω load in the presence of 10%
high line headroom and 20% supply regulation.
The LME49830 includes internal thermal shut down circuitry
that activates when the LME49830 die temperature exceeds
150°C. The LME49830 has a mute function that mutes the
input drive signal and forces the amplifier output to a quies-
cent state.
The LME49830 has high drive current, 56mA typical, and high
output voltage swing for maximum flexibility in output stage
choice. With a bias voltage range up to 16V the LME49830
can be used to drive MOSFET output stages using a wide
selection of MOSFETs.
The LME49830 has a wide operating supply range of ±20V
to ±100V, which allows lower cost, unregulated power sup-
plies to be used.
Overture® is a registered trademark of National Semiconductor Corporation.
300050
Key Specifications
Features
Applications
■ 
■ 
■ 
■ 
■ 
(BW = 30kHz)
High output current and voltage for use with MOSFET
output stages
Very high voltage range: ±20V - ±100V
Scalable output power
Minimum external components
External compensation
Thermal shutdown of input stage
Mute control
AV receivers
Audiophile power amps
Pro Audio
High voltage industrial applications
Wide operating Voltage range
Output Voltage Noise
PSRR (DC)
Slew Rate
THD+N (f = 1kHz)
January 24, 2008
±20V to ±100V
0.0006% (typ)
www.national.com
39V/μs (typ)
105dB (typ)
44μV (typ)

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LME49830TB/NOPB Summary of contents

Page 1

... MOSFETs. The LME49830 has a wide operating supply range of ±20V to ±100V, which allows lower cost, unregulated power sup- plies to be used. Overture® registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation Key Specifications ■  Wide operating Voltage range ■ ...

Page 2

Typical Application www.national.com FIGURE 1. Typical Audio Amplifier Application Circuit 2 300050f9 ...

Page 3

Connection Diagram Pin Descriptions Pin Plastic Package (Note 8) Top View Order Number LME49830TB See NS Package Number TB15A N = National logo U = ...

Page 4

Block Diagram www.national.com FIGURE 2. LME49830 Simplified Block Diagram 4 30005091 ...

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 Rating (Note 4) ESD Rating (Note 5) Junction Temperature (T ) JMAX ...

Page 6

Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond ...

Page 7

Typical Performance Characteristics THD+N vs Frequency + 20V THD+N vs Frequency + 50V THD+N vs Frequency + 100V ...

Page 8

THD+N vs Output Voltage + 50V 20Hz CC EE THD+N vs Output Voltage + 50V 1kHz CC EE THD+N vs Output Voltage + 50V 20kHz ...

Page 9

THD+N vs Output Voltage + 20V 20Hz CC EE 30005081 THD+N vs Output Voltage + 20V 20kHz CC EE 30005084 Closed Loop Frequency Response + 100V, V ...

Page 10

PSRR vs Frequency + 100V, No Filters, Input Referred 200mV RIPPLE RMS Output Voltage vs Supply Voltage Supply Current vs Supply Voltage www.national.com on V pin EE 30005069 Slew Rate vs Compensation Capacitor ...

Page 11

Open Loop Gain and Phase Margin + 100V CC EE 30005061 Noise Floor + 50V 30005088 CMRR vs Frequency + 100V CC EE Noise Floor ...

Page 12

Application Information MUTE FUNCTION The mute function of the LME49830 is controlled by the amount of current that flows into the MUTE pin. If there is less than 100μA of current flowing into the MUTE pin, the part will be ...

Page 13

If the value decreased then the value increase in order to maintain the same -3dB frequency re- sponse. AVOIDING THERMAL RUNAWAY WHEN USING BIPOLAR OUTPUT STAGES When using a bipolar output stage with ...

Page 14

Demonstration Board Schematic FIGURE 4. LME49830 Demo Board with Mute Function Schematic www.national.com 14 300050f8 ...

Page 15

Demonstration Board Layout Top Silkscreen Top Layer 15 300050f7 300050f6 www.national.com ...

Page 16

Bottom Silkscreen Layer Bottom Layer 16 300050f5 300050f4 ...

Page 17

Demonstration Board Bill of Materials Item Description High Perf MOSFET Power 1 U1 Amplifier Input Stage Mica Capacitor Aluminum Electrolytic Ci 3 Capacitor Metal Polyester Film Cap Cin 4 Aluminum Electrolytic Cs1, Cs2 5 Capacitor Metal Polyester ...

Page 18

Revision History Rev 1.0 1.01 1.02 1.03 www.national.com Date 01/09/08 Initial release. 01/16/08 Deleted the Limit values on Vnoise (EC table).. 01/22/08 Changed limit values on Vnoise, I 01/24/08 Updated the Typical demo ckt diagram and the App ckt diagram. ...

Page 19

Physical Dimensions inches (millimeters) unless otherwise noted TO-247 15 Lead Package Order Number LME49830TB NS Package Number TB15A 19 www.national.com ...

Page 20

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...

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