LM4752 Datasheet, PDF (1/28 Pages) National Semiconductor (TI) – Stereo 11W Audio Power Amplifier

LM4752
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SNAS006E – FEBRUARY 1999 – REVISED APRIL 2013
LM4752 Stereo 11W Audio Power Amplifier
Check for Samples: LM4752
FEATURES
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•2 Drives 4Ω and 8Ω Loads
• Internal Gain Resistors (A_V = 34 dB)
• 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
APPLICATIONS
• Compact Stereos
• Stereo TVs
• Mini Component Stereos
• Multimedia Speakers
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
operation 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
TO-220 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
• Output Power at 10% THD+N with 1kHz into 4Ω
V_CC = 24V 11 W (typ)
• Output Power at 10% THD+N with 1kHz into 8Ω
V_CC = 24V 7 W (typ)
• Closed Loop Gain 34 dB (typ)
• P_O at 10% THD+N @ 1 kHz into 4Ω Single-
Ended DDPAK Package V_CC = 12V 2.5 W (typ)
• P_O at 10% THD+N @ 1kHz into 8Ω Bridged
DDPAK Package V_CC = 12V 5 W (typ)
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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