LM1876T/NOPB National Semiconductor, LM1876T/NOPB Datasheet

IC AMP AUDIO PWR 22W AB TO220-15

LM1876T/NOPB

Manufacturer Part Number
LM1876T/NOPB
Description
IC AMP AUDIO PWR 22W AB TO220-15
Manufacturer
National Semiconductor
Series
Overture™r
Type
Class ABr
Datasheet

Specifications of LM1876T/NOPB

Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
22W x 2 @ 4 Ohm
Voltage - Supply
20 V ~ 64 V, ±10 V ~ 32 V
Features
Depop, Mute, Standby, Thermal Protection
Mounting Type
Through Hole
Package / Case
TO-220-15 (Bent and Staggered Leads)
Amplifier Class
AB
No. Of Channels
2
Output Power
20W
Supply Voltage Range
20V To 64V
Load Impedance
8ohm
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
*LM1876T
*LM1876T/NOPB
LM1876T

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM1876T/NOPB
Quantity:
240
© 2003 National Semiconductor Corporation
LM1876 Overture
Dual 20W Audio Power Amplifier with Mute and Standby
Modes
General Description
The LM1876 is a stereo audio amplifier capable of delivering
typically 20W per channel of continuous average output
power into a 4Ω or 8Ω load with less than 0.1% THD+N.
Each amplifier has an independent smooth transition fade-
in/out mute and a power conserving standby mode which
can be controlled by external logic.
The performance of the LM1876, utilizing its Self Peak In-
stantaneous Temperature (˚Ke) (SPiKe
cuitry, places it in a class above discrete and hybrid amplifi-
ers by providing an inherently, dynamically protected Safe
Operating Area (SOA). SPiKe protection means that these
parts are safeguarded at the output against overvoltage,
undervoltage, overloads, including thermal runaway and in-
stantaneous temperature peaks.
Connection Diagram
SPiKe
Protection and Overture
are trademarks of National Semiconductor Corporation.
DS012072
Audio Power Amplifier Series
) protection cir-
See NS Package Number TA15A
See NS Package Number TF15B
Order Number LM1876TF
Order Number LM1876T
Non-Isolated Package
Isolated Package
Plastic Package
Top View
Key Specifications
Features
n SPiKe protection
n Minimal amount of external components necessary
n Quiet fade-in/out mute mode
n Standby-mode
n Isolated 15-lead TO-220 package
n Non-Isolated 15-lead TO-220 package
n Wide supply range 20V - 64V
Applications
n High-end stereo TVs
n Component stereo
n Compact stereo
j
j
j
THD+N at 1kHz at 2 x 15W continuous average
output power into 4Ω or 8Ω:
THD+N at 1kHz at continuous average
output power of 2 x 20W into 8Ω:
Standby current:
01207202
0.009% (typ)
www.national.com
4.2mA (typ)
0.1% (max)
July 2003

Related parts for LM1876T/NOPB

LM1876T/NOPB Summary of contents

Page 1

... Connection Diagram SPiKe ™ Protection and Overture ™ are trademarks of National Semiconductor Corporation. © 2003 National Semiconductor Corporation Audio Power Amplifier Series Key Specifications j THD+N at 1kHz 15W continuous average output power into 4Ω or 8Ω: ...

Page 2

Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit Note: Numbers in parentheses represent pinout for amplifier B. www.national.com 01207201 * Optional component dependent upon specific design requirements. 2 ...

Page 3

... Absolute Maximum Ratings 5) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage | (No Input) Supply Voltage | (with Input) Common Mode Input Voltage Differential Input Voltage Output Current Power Dissipation (Note 6) ESD Susceptability (Note 7) ...

Page 4

Electrical Characteristics The following specifications apply for V 25˚C. Symbol Parameter CMRR Common Mode Rejection Ratio (Note 2) A Open Loop Voltage Gain VOL (Note 2) GBWP Gain Bandwidth Product e Input Noise IN (Note 3) SNR Signal-to-Noise Ratio A ...

Page 5

Test Circuit # 1 (Note 2) (DC Electrical Test Circuit) Test Circuit # 2 (Note 3) (AC Electrical Test Circuit) Bridged Amplifier Application Circuit FIGURE 2. Bridged Amplifier Application Circuit 01207203 01207204 01207205 5 www.national.com ...

Page 6

Single Supply Application Circuit FIGURE 3. Single Supply Amplifier Application Circuit Note: * Optional components dependent upon specific design requirements. Auxiliary Amplifier Application Circuit FIGURE 4. Special Audio Amplifier Application Circuit www.national.com 01207206 01207207 6 ...

Page 7

Equivalent Schematic protection circuitry) (excluding active LM1876 (per Amp) 7 01207208 www.national.com ...

Page 8

External Components Description Components 1 R Prevents currents from entering the amplifier’s non-inverting input which may be passed through to the load B upon power down of the system due to the low input impedance of the circuitry when the ...

Page 9

Typical Performance Characteristics THD + N vs Frequency THD + N vs Output Power THD + N vs Output Power (Continued) 01207215 01207217 01207219 9 THD + N vs Output Power 01207216 THD + N vs Output Power 01207218 THD ...

Page 10

Typical Performance Characteristics THD + N vs Output Power Clipping Voltage vs Supply Voltage Output Power vs Load Resistance www.national.com (Continued) 01207221 01207223 01207225 10 Clipping Voltage vs Supply Voltage 01207222 Clipping Voltage vs Supply Voltage 01207224 Power Dissipation vs ...

Page 11

Typical Performance Characteristics Power Dissipation vs Output Power Output Mute vs Mute Pin Voltage Channel Separation vs Frequency (Continued) 01207227 01207229 01207231 11 Output Power vs Supply Voltage 01207228 Output Mute vs Mute Pin Voltage 01207230 Pulse Response 01207232 www.national.com ...

Page 12

Typical Performance Characteristics Large Signal Response Common-Mode Rejection Ratio Safe Area www.national.com (Continued) 01207233 Frequency Response 01207235 01207237 12 Power Supply Rejection Ratio 01207234 Open Loop 01207236 SPiKe Protection Response 01207238 ...

Page 13

Typical Performance Characteristics Supply Current vs Supply Voltage Pulse Thermal Resistance Pulse Power Limit (Continued) 01207239 01207241 01207243 13 Pulse Thermal Resistance 01207240 Supply Current vs Output Voltage 01207242 Pulse Power Limit 01207244 www.national.com ...

Page 14

Typical Performance Characteristics Supply Current vs Case Temperature Supply Current (I Standby Pin Voltage Output Power/Channel vs Supply Voltage f = 1kHz 4Ω, 80kHz BW L www.national.com (Continued) 01207245 ) vs EE 01207247 01207252 14 Supply Current (I ...

Page 15

Typical Performance Characteristics Output Power/Channel vs Supply Voltage f = 1kHz 8Ω, 80kHz BW L (Continued) 01207254 15 www.national.com ...

Page 16

Application Information MUTE MODE By placing a logic-high voltage on the mute pins, the signal going into the amplifiers will be muted. If the mute pins are left floating or connected to a logic-low voltage, the amplifi- ers will be ...

Page 17

Application Information SUPPLY BYPASSING The LM1876 has excellent power supply rejection and does not require a regulated supply. However, to improve system performance as well as eliminate possible oscillations, the LM1876 should have its supply leads bypassed with low- inductance ...

Page 18

Application Information To achieve a transient free power-up and power-down, the voltage seen at the input terminals should be ideally the same. Such a signal will be common-mode in nature, and will be rejected by the LM1876. In Figure 3, ...

Page 19

Physical Dimensions inches (millimeters) unless otherwise noted Isolated TO-220 15-Lead Package Order Number LM1876TF NS Package Number TF15B Non-Isolated TO-220 15-Lead Package Order Number LM1876T NS Package Number TA15A 19 www.national.com ...

Page 20

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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