LM3886T/NOPB National Semiconductor, LM3886T/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM3886T/NOPB
• Description: IC AMP AUDIO PWR 68W AB TO220-11
• Manufacturer: National Semiconductor
• Series: Overture™r
• Type: Class ABr

Specifications of LM3886T/NOPB

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 68W x 1 @ 4 Ohm
• Voltage - Supply: 20 V ~ 84 V, ±10 V ~ 42 V
• Features: Mute, Short-Circuit and Thermal Protection
• Mounting Type: Through Hole
• Package / Case: TO-220-11 (Bent and Staggered Leads)
• Amplifier Type: Audio
• Bandwidth: 8 MHz
• Common Mode Rejection Ratio: 110
• Current, Input Bias: 0.2 μA
• Current, Input Offset: 0.01 μA
• Current, Output: 11.5 A
• Current, Supply: 50 mA
• Harmonic Distortion: 0.03 %
• Impedance, Thermal: 43 °C/W
• Open Loop Gain: 115
• Package Type: TO220-11
• Power Dissipation: 125 W
• Slew Rate: 19
• Temperature, Operating, Range: -20 to +85 °C
• Time, Rise: 2 ns
• Voltage, Input: 28 V
• Voltage, Input Offset: 1 mV
• Voltage, Noise: 2 μV
• Voltage, Supply: 20 to 94 V
• Amplifier Class: AB
• No. Of Channels: 1
• Output Power: 68W
• Supply Voltage Range: 20V To 84V
• Load Impedance: 4ohm
• Operating Temperature Range: -20°C To +85°C
• Amplifier Case Style: TO-220
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM3886T; *LM3886T/NOPB; LM3886T

© 2003 National Semiconductor Corporation
LM3886 Overture
High-Performance 68W Audio Power Amplifier w/Mute
General Description
The LM3886 is a high-performance audio power amplifier
capable of delivering 68W of continuous average power to a
4Ω load and 38W into 8Ω with 0.1% THD+N from
20Hz–20kHz.
The performance of the LM3886, utilizing its Self Peak In-
stantaneous Temperature (˚Ke) (SPiKe
cuitry, puts it in a class above discrete and hybrid amplifiers
by providing an inherently, dynamically protected Safe Op-
erating Area (SOA). SPiKe protection means that these
parts are completely safeguarded at the output against ov-
ervoltage, undervoltage, overloads, including shorts to the
supplies, thermal runaway, and instantaneous temperature
peaks.
The LM3886 maintains an excellent signal-to-noise ratio of
greater than 92dB with a typical low noise floor of 2.0µV. It
exhibits extremely low THD+N values of 0.03% at the rated
output into the rated load over the audio spectrum, and
provides excellent linearity with an IMD (SMPTE) typical
rating of 0.004%.
Features
n 68W cont. avg. output power into 4Ω at V
n 38W cont. avg. output power into 8Ω at V
n 50W cont. avg. output power into 8Ω at V
Typical Application
*Optional components dependent upon specific design requirements. Refer to the External Components Description section for a component functional
description.
Overture
™
and SPiKe
™
Protection are trademarks of National Semiconductor Corporation.
FIGURE 1. Typical Audio Amplifier Application Circuit
™
DS011833
™
Audio Power Amplifier Series
) protection cir-
CC
CC
CC
=
=
=
±
±
±
28V
28V
35V
n 135W instantaneous peak output power capability
n Signal-to-Noise Ratio ≥ 92dB
n An input mute function
n Output protection from a short to ground or to the
n Output over-voltage protection against transients from
n Supply under-voltage protection, not allowing internal
n 11-lead TO-220 package
n Wide supply range 20V - 94V
Applications
n Component stereo
n Compact stereo
n Self-powered speakers
n Surround-sound amplifiers
n High-end stereo TVs
supplies via internal current limiting circuitry
inductive loads
biasing to occur when |V
eliminating turn-on and turn-off transients
01183301
EE
| + |V
CC
| ≤ 12V, thus