LM4752TS/NOPB National Semiconductor, LM4752TS/NOPB Datasheet

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LM4752TS/NOPB

Manufacturer Part Number
LM4752TS/NOPB
Description
IC AMP AUDIO PWR 11W AB TO263-7
Manufacturer
National Semiconductor
Type
Class ABr
Datasheet
1.LM4752TSNOPB.pdf (22 pages)

Specifications of LM4752TS/NOPB

Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
11W x 2 @ 4 Ohm
Voltage - Supply
9 V ~ 32 V
Features
Thermal Shutdown Protection
Mounting Type
Surface Mount
Package / Case
D²Pak, TO-263 (7 leads + tab)
Peak Reflow Compatible (260 C)
Yes
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*LM4752TS
*LM4752TS/NOPB
LM4752TS

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Euro Chip Distribution Euro Chip Distribution
Part Number:
LM4752TS/NOPB
Quantity:
450
© 2008 National Semiconductor Corporation
LM4752
Stereo 11W Audio Power Amplifier
General Description
The LM4752 is a stereo audio amplifier capable of delivering
11W per channel of continuous average output power to a
4Ω load, or 7W per channel into 8Ω using a single 24V supply
at 10% THD+N.
The LM4752 is specifically designed for single supply opera-
tion and a low external component count. The gain and bias
resistors are integrated on chip, resulting in a 11W stereo
amplifier in a compact 7 pin TO220 package. High output
power levels at both 20V and 24V supplies and low external
component count offer high value for compact stereo and TV
applications. A simple mute function can be implemented with
the addition of a few external components.
Key Specifications
■
■
■
■
Typical Application
Output power at 10% THD+N with 1kHz into 4Ω at
V
Output power at 10% THD+N with 1kHz into 8Ω at
V
Closed loop gain: 34dB (typ)
P
package at V
CC
CC
O
at 10% THD+N @ 1 kHz into 4Ω single-ended TO-263
= 24V: 11W (typ)
= 24V: 7W (typ)
CC
= 12V: 2.5W (typ)
FIGURE 1. Typical Audio Amplifier Application Circuit
100039
■
Features
■
■
■
■
■
■
■
■
■
Applications
■
■
■
■
P
package at V
Drives 4Ω and 8Ω loads
Internal gain resistors (A
Minimum external component requirement
Single supply operation
Internal current limiting
Internal thermal protection
Compact 7-lead TO-220 package
Low cost-per-watt
Wide supply range 9V - 40V
Compact stereos
Stereo TVs
Mini component stereos
Multimedia speakers
O
at 10% THD+N @ 1kHz into 8Ω bridged TO-263
CC
= 12V: 5W (typ)
V
= 34 dB)
10003901
www.national.com
May 14, 2008

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LM4752TS/NOPB Summary of contents

Page 1

... P at 10% THD kHz into 4Ω single-ended TO-263 O package 12V: 2.5W (typ) CC Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit © 2008 National Semiconductor Corporation ■ 10% THD+N @ 1kHz into 8Ω bridged TO-263 O package at V Features ■ Drives 4Ω and 8Ω loads ■ ...

Page 2

Connection Diagrams www.national.com Plastic Package 10003902 Package Description Top View Order Number LM4752T Package Number TA07B 10003950 Package Description Top View Order Number LM4752TS Package Number TS07B 2 ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Input Voltage Input Voltage at Output Pins (Note 8) Output Current Power Dissipation (Note 3) ESD Susceptibility (Note 4) Junction Temperature Electrical Characteristics ...

Page 4

Test Circuit www.national.com FIGURE 2. Test Circuit 4 10003936 ...

Page 5

Typical Application with Mute FIGURE 3. Application with Mute Function 5 10003903 www.national.com ...

Page 6

Equivalent Schematic Diagram www.national.com 6 ...

Page 7

System Application Circuit FIGURE 4. Circuit for External Components Description External Components Description Components Provides power supply filtering and bypassing Rsn Works with Csn to stabilize the output stage from high frequency oscillations ...

Page 8

Typical Performance Characteristics THD+N vs Output Power THD+N vs Output Power THD+N vs Output Power www.national.com THD+N vs Output Power 10003912 THD+N vs Output Power 10003914 THD+N vs Output Power 10003907 8 10003913 10003906 10003908 ...

Page 9

THD+N vs Output Power 10003915 THD+N vs Output Power 10003917 THD+N vs Output Power 10003910 THD+N vs Output Power THD+N vs Output Power THD+N vs Output Power 9 10003916 10003909 10003911 www.national.com ...

Page 10

THD+N vs Output Power THD+N vs Output Power THD+N vs Output Power www.national.com THD+N vs Output Power 10003938 THD+N vs Output Power 10003940 THD+N vs Output Power 10003942 10 10003939 10003941 10003943 ...

Page 11

THD+N vs Output Power 10003944 THD+N vs Output Power 10003946 THD+N vs Output Power 10003948 THD+N vs Output Power THD+N vs Output Power THD+N vs Output Power 11 10003945 10003947 10003949 www.national.com ...

Page 12

Output Power vs Supply Voltage Frequency Response THD+N vs Frequency www.national.com Output Power vs Supply Voltage 10003918 THD+N vs Frequency 10003920 Frequency Response 10003922 12 10003919 10003921 10003923 ...

Page 13

Channel Separation 10003924 Supply Current vs Supply Voltage 10003926 Power Dissipation vs Output Power 10003928 PSRR vs Frequency Power Derating Curve Power Dissipation vs Output Power 13 10003925 10003927 10003929 www.national.com ...

Page 14

Power Dissipation vs Output Power Application Information CAPACITOR SELECTION AND FREQUENCY RESPONSE With the LM4752 all single supply amplifiers, AC cou- pling capacitors are used to isolate the DC voltage present at the inputs (pins 2,6) and outputs ...

Page 15

FIGURE 6. THD+N vs. P PREVENTING OSCILLATIONS With the integration of the feedback and bias resistors on- chip, the LM4752 fits into a very compact package. However, due to the close proximity of the non-inverting input pins to the corresponding ...

Page 16

Figure 7 shows an example of such a circuit. When the voltage across the zener ...

Page 17

• • • (24V) DMAX S L 14.6W ≤ θ ] − θ − θ − ...

Page 18

PC BOARD LAYOUT—COMPOSITE www.national.com 18 10003933 ...

Page 19

PC BOARD LAYOUT—SILK SCREEN 19 10003934 www.national.com ...

Page 20

PC BOARD LAYOUT—SOLDER SIDE www.national.com 20 10003935 ...

Page 21

Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM4752T NS Package Number TA07B Order Number LM4752TS NS Package Number TS7B 21 www.national.com ...

Page 22

... 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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